From 466b3ddfbcf4f5ce402a77397630a0fa9ea9ce6b Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Sun, 30 Oct 2011 16:35:08 +0100 Subject: PCI: Fix compile errors with PCI_ATS and !PCI_IOV The ats and sroiv members of 'struct pci_dev' are required for the ATS code already, even without IOV support compiled in. So depend on ATS here. This is fine with PCI_IOV too because it selects PCI_ATS. Also the prototypes for ATS need to be available for PCI_ATS. Reported-by: Randy Dunlap Signed-off-by: Joerg Roedel Signed-off-by: Jesse Barnes --- include/linux/pci-ats.h | 6 +++--- include/linux/pci.h | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h index e3d0b389024..7ef68724f0f 100644 --- a/include/linux/pci-ats.h +++ b/include/linux/pci-ats.h @@ -12,7 +12,7 @@ struct pci_ats { unsigned int is_enabled:1; /* Enable bit is set */ }; -#ifdef CONFIG_PCI_IOV +#ifdef CONFIG_PCI_ATS extern int pci_enable_ats(struct pci_dev *dev, int ps); extern void pci_disable_ats(struct pci_dev *dev); @@ -29,7 +29,7 @@ static inline int pci_ats_enabled(struct pci_dev *dev) return dev->ats && dev->ats->is_enabled; } -#else /* CONFIG_PCI_IOV */ +#else /* CONFIG_PCI_ATS */ static inline int pci_enable_ats(struct pci_dev *dev, int ps) { @@ -50,7 +50,7 @@ static inline int pci_ats_enabled(struct pci_dev *dev) return 0; } -#endif /* CONFIG_PCI_IOV */ +#endif /* CONFIG_PCI_ATS */ #ifdef CONFIG_PCI_PRI diff --git a/include/linux/pci.h b/include/linux/pci.h index 337df0d5d5f..7cda65b5f79 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -338,7 +338,7 @@ struct pci_dev { struct list_head msi_list; #endif struct pci_vpd *vpd; -#ifdef CONFIG_PCI_IOV +#ifdef CONFIG_PCI_ATS union { struct pci_sriov *sriov; /* SR-IOV capability related */ struct pci_dev *physfn; /* the PF this VF is associated with */ -- cgit v1.2.3-70-g09d2 From 3af1f8a41feab47b232b0c3d3b2322426672480d Mon Sep 17 00:00:00 2001 From: Phil Edworthy Date: Mon, 3 Oct 2011 15:16:47 +0100 Subject: serial: sh-sci: Fix up SH-2A SCIF support. This fixes up support for SH-2(A) SCIFs by introducing a new regtype. As expected, it's close to the SH-4A SCIF with fifodata, but still different enough to warrant its own type. Fixes up a number of FIFO overflows and similar for both SH7203/SH7264. Signed-off-by: Phil Edworthy Tested-by: Federico Fuga Signed-off-by: Paul Mundt --- arch/sh/kernel/cpu/sh2a/setup-sh7203.c | 16 ++++++++++++---- drivers/tty/serial/sh-sci.c | 19 +++++++++++++++++++ include/linux/serial_sci.h | 1 + 3 files changed, 32 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/arch/sh/kernel/cpu/sh2a/setup-sh7203.c b/arch/sh/kernel/cpu/sh2a/setup-sh7203.c index a43124e608c..0bd744f9a3b 100644 --- a/arch/sh/kernel/cpu/sh2a/setup-sh7203.c +++ b/arch/sh/kernel/cpu/sh2a/setup-sh7203.c @@ -176,10 +176,12 @@ static DECLARE_INTC_DESC(intc_desc, "sh7203", vectors, groups, static struct plat_sci_port scif0_platform_data = { .mapbase = 0xfffe8000, .flags = UPF_BOOT_AUTOCONF, - .scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE, + .scscr = SCSCR_RIE | SCSCR_TIE | SCSCR_RE | SCSCR_TE | + SCSCR_REIE, .scbrr_algo_id = SCBRR_ALGO_2, .type = PORT_SCIF, .irqs = { 192, 192, 192, 192 }, + .regtype = SCIx_SH2_SCIF_FIFODATA_REGTYPE, }; static struct platform_device scif0_device = { @@ -193,10 +195,12 @@ static struct platform_device scif0_device = { static struct plat_sci_port scif1_platform_data = { .mapbase = 0xfffe8800, .flags = UPF_BOOT_AUTOCONF, - .scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE, + .scscr = SCSCR_RIE | SCSCR_TIE | SCSCR_RE | SCSCR_TE | + SCSCR_REIE, .scbrr_algo_id = SCBRR_ALGO_2, .type = PORT_SCIF, .irqs = { 196, 196, 196, 196 }, + .regtype = SCIx_SH2_SCIF_FIFODATA_REGTYPE, }; static struct platform_device scif1_device = { @@ -210,10 +214,12 @@ static struct platform_device scif1_device = { static struct plat_sci_port scif2_platform_data = { .mapbase = 0xfffe9000, .flags = UPF_BOOT_AUTOCONF, - .scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE, + .scscr = SCSCR_RIE | SCSCR_TIE | SCSCR_RE | SCSCR_TE | + SCSCR_REIE, .scbrr_algo_id = SCBRR_ALGO_2, .type = PORT_SCIF, .irqs = { 200, 200, 200, 200 }, + .regtype = SCIx_SH2_SCIF_FIFODATA_REGTYPE, }; static struct platform_device scif2_device = { @@ -227,10 +233,12 @@ static struct platform_device scif2_device = { static struct plat_sci_port scif3_platform_data = { .mapbase = 0xfffe9800, .flags = UPF_BOOT_AUTOCONF, - .scscr = SCSCR_RE | SCSCR_TE | SCSCR_REIE, + .scscr = SCSCR_RIE | SCSCR_TIE | SCSCR_RE | SCSCR_TE | + SCSCR_REIE, .scbrr_algo_id = SCBRR_ALGO_2, .type = PORT_SCIF, .irqs = { 204, 204, 204, 204 }, + .regtype = SCIx_SH2_SCIF_FIFODATA_REGTYPE, }; static struct platform_device scif3_device = { diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 9871c57b348..1b6ec568f32 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -206,6 +206,25 @@ static struct plat_sci_reg sci_regmap[SCIx_NR_REGTYPES][SCIx_NR_REGS] = { [SCLSR] = sci_reg_invalid, }, + /* + * Common SH-2(A) SCIF definitions for ports with FIFO data + * count registers. + */ + [SCIx_SH2_SCIF_FIFODATA_REGTYPE] = { + [SCSMR] = { 0x00, 16 }, + [SCBRR] = { 0x04, 8 }, + [SCSCR] = { 0x08, 16 }, + [SCxTDR] = { 0x0c, 8 }, + [SCxSR] = { 0x10, 16 }, + [SCxRDR] = { 0x14, 8 }, + [SCFCR] = { 0x18, 16 }, + [SCFDR] = { 0x1c, 16 }, + [SCTFDR] = sci_reg_invalid, + [SCRFDR] = sci_reg_invalid, + [SCSPTR] = { 0x20, 16 }, + [SCLSR] = { 0x24, 16 }, + }, + /* * Common SH-3 SCIF definitions. */ diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h index 8bffe9ae2ca..5f3939c67dd 100644 --- a/include/linux/serial_sci.h +++ b/include/linux/serial_sci.h @@ -67,6 +67,7 @@ enum { SCIx_IRDA_REGTYPE, SCIx_SCIFA_REGTYPE, SCIx_SCIFB_REGTYPE, + SCIx_SH2_SCIF_FIFODATA_REGTYPE, SCIx_SH3_SCIF_REGTYPE, SCIx_SH4_SCIF_REGTYPE, SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE, -- cgit v1.2.3-70-g09d2 From dd2c0ca1b153b555c09fd8e08f6842e12cf8e87b Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Mon, 19 Sep 2011 18:51:13 -0700 Subject: sh: clkfwk: add clk_rate_mult_range_round() This provides a clk_rate_mult_range_round() helper for use by some of the CPG PLL ranged multipliers, following the same approach as used by the div ranges. Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- drivers/sh/clk/core.c | 20 ++++++++++++++++++++ include/linux/sh_clk.h | 3 +++ 2 files changed, 23 insertions(+) (limited to 'include/linux') diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c index dc8d022c07a..352036b1f9a 100644 --- a/drivers/sh/clk/core.c +++ b/drivers/sh/clk/core.c @@ -173,6 +173,26 @@ long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, return clk_rate_round_helper(&div_range_round); } +static long clk_rate_mult_range_iter(unsigned int pos, + struct clk_rate_round_data *rounder) +{ + return clk_get_rate(rounder->arg) * pos; +} + +long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min, + unsigned int mult_max, unsigned long rate) +{ + struct clk_rate_round_data mult_range_round = { + .min = mult_min, + .max = mult_max, + .func = clk_rate_mult_range_iter, + .arg = clk_get_parent(clk), + .rate = rate, + }; + + return clk_rate_round_helper(&mult_range_round); +} + int clk_rate_table_find(struct clk *clk, struct cpufreq_frequency_table *freq_table, unsigned long rate) diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index 3ccf18648d0..9237c299641 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -94,6 +94,9 @@ int clk_rate_table_find(struct clk *clk, long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, unsigned int div_max, unsigned long rate); +long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min, + unsigned int mult_max, unsigned long rate); + long clk_round_parent(struct clk *clk, unsigned long target, unsigned long *best_freq, unsigned long *parent_freq, unsigned int div_min, unsigned int div_max); -- cgit v1.2.3-70-g09d2 From 1788ea6e3b2a58cf4fb00206e362d9caff8d86a7 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 4 Nov 2011 13:31:21 -0400 Subject: nfs: when attempting to open a directory, fall back on normal lookup (try #5) commit d953126 changed how nfs_atomic_lookup handles an -EISDIR return from an OPEN call. Prior to that patch, that caused the client to fall back to doing a normal lookup. When that patch went in, the code began returning that error to userspace. The d_revalidate codepath however never had the corresponding change, so it was still possible to end up with a NULL ctx->state pointer after that. That patch caused a regression. When we attempt to open a directory that does not have a cached dentry, that open now errors out with EISDIR. If you attempt the same open with a cached dentry, it will succeed. Fix this by reverting the change in nfs_atomic_lookup and allowing attempts to open directories to fall back to a normal lookup Also, add a NFSv4-specific f_ops->open routine that just returns -ENOTDIR. This should never be called if things are working properly, but if it ever is, then the dprintk may help in debugging. To facilitate this, a new file_operations field is also added to the nfs_rpc_ops struct. Cc: stable@kernel.org Signed-off-by: Jeff Layton Signed-off-by: Trond Myklebust --- fs/nfs/dir.c | 2 +- fs/nfs/file.c | 32 ++++++++++++++++++++++++++++++++ fs/nfs/inode.c | 2 +- fs/nfs/nfs3proc.c | 1 + fs/nfs/nfs4proc.c | 1 + fs/nfs/proc.c | 1 + include/linux/nfs_fs.h | 3 +++ include/linux/nfs_xdr.h | 1 + 8 files changed, 41 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index b238d95ac48..ac289909814 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1468,12 +1468,12 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry res = NULL; goto out; /* This turned out not to be a regular file */ + case -EISDIR: case -ENOTDIR: goto no_open; case -ELOOP: if (!(nd->intent.open.flags & O_NOFOLLOW)) goto no_open; - /* case -EISDIR: */ /* case -EINVAL: */ default: res = ERR_CAST(inode); diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 0a1f8312b4d..6d93e0754b5 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -886,3 +886,35 @@ static int nfs_setlease(struct file *file, long arg, struct file_lock **fl) file->f_path.dentry->d_name.name, arg); return -EINVAL; } + +#ifdef CONFIG_NFS_V4 +static int +nfs4_file_open(struct inode *inode, struct file *filp) +{ + /* + * NFSv4 opens are handled in d_lookup and d_revalidate. If we get to + * this point, then something is very wrong + */ + dprintk("NFS: %s called! inode=%p filp=%p\n", __func__, inode, filp); + return -ENOTDIR; +} + +const struct file_operations nfs4_file_operations = { + .llseek = nfs_file_llseek, + .read = do_sync_read, + .write = do_sync_write, + .aio_read = nfs_file_read, + .aio_write = nfs_file_write, + .mmap = nfs_file_mmap, + .open = nfs4_file_open, + .flush = nfs_file_flush, + .release = nfs_file_release, + .fsync = nfs_file_fsync, + .lock = nfs_lock, + .flock = nfs_flock, + .splice_read = nfs_file_splice_read, + .splice_write = nfs_file_splice_write, + .check_flags = nfs_check_flags, + .setlease = nfs_setlease, +}; +#endif /* CONFIG_NFS_V4 */ diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index c07a55aec83..50a15fa8cf9 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -291,7 +291,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr) */ inode->i_op = NFS_SB(sb)->nfs_client->rpc_ops->file_inode_ops; if (S_ISREG(inode->i_mode)) { - inode->i_fop = &nfs_file_operations; + inode->i_fop = NFS_SB(sb)->nfs_client->rpc_ops->file_ops; inode->i_data.a_ops = &nfs_file_aops; inode->i_data.backing_dev_info = &NFS_SB(sb)->backing_dev_info; } else if (S_ISDIR(inode->i_mode)) { diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 85f1690ca08..d4bc9ed9174 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -853,6 +853,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .dentry_ops = &nfs_dentry_operations, .dir_inode_ops = &nfs3_dir_inode_operations, .file_inode_ops = &nfs3_file_inode_operations, + .file_ops = &nfs_file_operations, .getroot = nfs3_proc_get_root, .getattr = nfs3_proc_getattr, .setattr = nfs3_proc_setattr, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b60fddf606f..069cb8094d4 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6253,6 +6253,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .dentry_ops = &nfs4_dentry_operations, .dir_inode_ops = &nfs4_dir_inode_operations, .file_inode_ops = &nfs4_file_inode_operations, + .file_ops = &nfs4_file_operations, .getroot = nfs4_proc_get_root, .getattr = nfs4_proc_getattr, .setattr = nfs4_proc_setattr, diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index ac40b8535d7..f48125da198 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -710,6 +710,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .dentry_ops = &nfs_dentry_operations, .dir_inode_ops = &nfs_dir_inode_operations, .file_inode_ops = &nfs_file_inode_operations, + .file_ops = &nfs_file_operations, .getroot = nfs_proc_get_root, .getattr = nfs_proc_getattr, .setattr = nfs_proc_setattr, diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index ab2c6343361..92ecf5585fa 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -410,6 +410,9 @@ extern const struct inode_operations nfs_file_inode_operations; extern const struct inode_operations nfs3_file_inode_operations; #endif /* CONFIG_NFS_V3 */ extern const struct file_operations nfs_file_operations; +#ifdef CONFIG_NFS_V4 +extern const struct file_operations nfs4_file_operations; +#endif /* CONFIG_NFS_V4 */ extern const struct address_space_operations nfs_file_aops; extern const struct address_space_operations nfs_dir_aops; diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index c74595ba709..2a7c533be5d 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1192,6 +1192,7 @@ struct nfs_rpc_ops { const struct dentry_operations *dentry_ops; const struct inode_operations *dir_inode_ops; const struct inode_operations *file_inode_ops; + const struct file_operations *file_ops; int (*getroot) (struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); -- cgit v1.2.3-70-g09d2 From 19940b3d55c87d8089a8cb0fa8e5a9918a3846bd Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 19 Aug 2011 18:05:05 +0900 Subject: ASoC: Ensure we get an impedence reported for WM8958 jack detect Occasionally we may see an accessory reported before we have a stable impedance for the accessory. If this happens then reread the status in order to ensure that the handler can take the appropriate action for the status change. Signed-off-by: Mark Brown --- include/linux/mfd/wm8994/registers.h | 15 +++++++++++++++ sound/soc/codecs/wm8994.c | 37 +++++++++++++++++++++++++----------- 2 files changed, 41 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/wm8994/registers.h b/include/linux/mfd/wm8994/registers.h index fae295048a8..83a9caec0e4 100644 --- a/include/linux/mfd/wm8994/registers.h +++ b/include/linux/mfd/wm8994/registers.h @@ -1962,6 +1962,21 @@ #define WM8958_MICB2_DISCH_SHIFT 0 /* MICB2_DISCH */ #define WM8958_MICB2_DISCH_WIDTH 1 /* MICB2_DISCH */ +/* + * R210 (0xD2) - Mic Detect 3 + */ +#define WM8958_MICD_LVL_MASK 0x07FC /* MICD_LVL - [10:2] */ +#define WM8958_MICD_LVL_SHIFT 2 /* MICD_LVL - [10:2] */ +#define WM8958_MICD_LVL_WIDTH 9 /* MICD_LVL - [10:2] */ +#define WM8958_MICD_VALID 0x0002 /* MICD_VALID */ +#define WM8958_MICD_VALID_MASK 0x0002 /* MICD_VALID */ +#define WM8958_MICD_VALID_SHIFT 1 /* MICD_VALID */ +#define WM8958_MICD_VALID_WIDTH 1 /* MICD_VALID */ +#define WM8958_MICD_STS 0x0001 /* MICD_STS */ +#define WM8958_MICD_STS_MASK 0x0001 /* MICD_STS */ +#define WM8958_MICD_STS_SHIFT 0 /* MICD_STS */ +#define WM8958_MICD_STS_WIDTH 1 /* MICD_STS */ + /* * R76 (0x4C) - Charge Pump (1) */ diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index 9cb16cc853b..9c982e47eb9 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -3030,19 +3030,34 @@ static irqreturn_t wm8958_mic_irq(int irq, void *data) { struct wm8994_priv *wm8994 = data; struct snd_soc_codec *codec = wm8994->codec; - int reg; + int reg, count; - reg = snd_soc_read(codec, WM8958_MIC_DETECT_3); - if (reg < 0) { - dev_err(codec->dev, "Failed to read mic detect status: %d\n", - reg); - return IRQ_NONE; - } + /* We may occasionally read a detection without an impedence + * range being provided - if that happens loop again. + */ + count = 10; + do { + reg = snd_soc_read(codec, WM8958_MIC_DETECT_3); + if (reg < 0) { + dev_err(codec->dev, + "Failed to read mic detect status: %d\n", + reg); + return IRQ_NONE; + } - if (!(reg & WM8958_MICD_VALID)) { - dev_dbg(codec->dev, "Mic detect data not valid\n"); - goto out; - } + if (!(reg & WM8958_MICD_VALID)) { + dev_dbg(codec->dev, "Mic detect data not valid\n"); + goto out; + } + + if (!(reg & WM8958_MICD_STS) || (reg & WM8958_MICD_LVL_MASK)) + break; + + msleep(1); + } while (count--); + + if (count == 0) + dev_warn(codec->dev, "No impedence range reported for jack\n"); #ifndef CONFIG_SND_SOC_WM8994_MODULE trace_snd_soc_jack_irq(dev_name(codec->dev)); -- cgit v1.2.3-70-g09d2 From 1a51cfdc4516a6e1f2c1f8a579630a027c30331a Mon Sep 17 00:00:00 2001 From: Jonathan Corbet Date: Mon, 7 Nov 2011 23:54:53 +0100 Subject: PM / devfreq: fix private_data The "private_date" field in struct devfreq_dev_status almost certainly wants to be "private_data"; since there are no in-tree users of this functionality, now seems like an easy time to make the fix. Signed-off-by: Jonathan Corbet Signed-off-by: Rafael J. Wysocki --- include/linux/devfreq.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h index afb94583960..98ce8124b1c 100644 --- a/include/linux/devfreq.h +++ b/include/linux/devfreq.h @@ -41,7 +41,7 @@ struct devfreq_dev_status { unsigned long total_time; unsigned long busy_time; unsigned long current_frequency; - void *private_date; + void *private_data; }; /** -- cgit v1.2.3-70-g09d2 From 816af3bb5022c1468b3d826c645ddc2cac45bc97 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 3 Nov 2011 14:45:48 +0800 Subject: hwspinlock: Don't return a value in __hwspin_unlock Fix below build warning: CC arch/arm/mach-omap2/hwspinlock.o In file included from arch/arm/mach-omap2/hwspinlock.c:22: include/linux/hwspinlock.h: In function '__hwspin_unlock': include/linux/hwspinlock.h:121: warning: 'return' with a value, in function returning void Signed-off-by: Axel Lin Signed-off-by: Ohad Ben-Cohen --- include/linux/hwspinlock.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/hwspinlock.h b/include/linux/hwspinlock.h index 08a2fee4065..aad6bd4b3ef 100644 --- a/include/linux/hwspinlock.h +++ b/include/linux/hwspinlock.h @@ -118,7 +118,6 @@ int __hwspin_trylock(struct hwspinlock *hwlock, int mode, unsigned long *flags) static inline void __hwspin_unlock(struct hwspinlock *hwlock, int mode, unsigned long *flags) { - return 0; } static inline int hwspin_lock_get_id(struct hwspinlock *hwlock) -- cgit v1.2.3-70-g09d2 From c9703765f3d5ab27909011dee4a05affe48e4442 Mon Sep 17 00:00:00 2001 From: Keng-Yu Lin Date: Wed, 9 Nov 2011 01:47:36 -0500 Subject: [libata] ahci: Add ASMedia ASM1061 support Signed-off-by: Keng-Yu Lin Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 3 +++ include/linux/pci_ids.h | 2 ++ 2 files changed, 5 insertions(+) (limited to 'include/linux') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index fb7b90b0592..cf26222a93c 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -390,6 +390,9 @@ static const struct pci_device_id ahci_pci_tbl[] = { /* Promise */ { PCI_VDEVICE(PROMISE, 0x3f20), board_ahci }, /* PDC42819 */ + /* Asmedia */ + { PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci }, /* ASM1061 */ + /* Generic, PCI class code for AHCI */ { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci }, diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 3fdf251389d..172ba70306d 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2405,6 +2405,8 @@ #define PCI_VENDOR_ID_AZWAVE 0x1a3b +#define PCI_VENDOR_ID_ASMEDIA 0x1b21 + #define PCI_VENDOR_ID_TEKRAM 0x1de1 #define PCI_DEVICE_ID_TEKRAM_DC290 0xdc29 -- cgit v1.2.3-70-g09d2 From e0e20753c15fc418d94fee826af394907df856d8 Mon Sep 17 00:00:00 2001 From: Barry Song Date: Thu, 27 Oct 2011 20:38:24 -0700 Subject: pinctrl: fix "warning: 'struct pinctrl_dev' declared inside parameter list" when pinctl subsystem is not selected, when compiling drivers including the include/linux/pinctrl/pinctrl.h, we will get the warning as below: In file included from include/linux/pinctrl/pinmux.h:17, from drivers/tty/serial/sirfsoc_uart.c:25: include/linux/pinctrl/pinctrl.h:126: warning: 'struct pinctrl_dev' declared inside parameter list include/linux/pinctrl/pinctrl.h:126: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Barry Song Signed-off-by: Linus Walleij --- include/linux/pinctrl/pinctrl.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h index 3605e947fa9..04c011038f3 100644 --- a/include/linux/pinctrl/pinctrl.h +++ b/include/linux/pinctrl/pinctrl.h @@ -121,6 +121,7 @@ extern const char *pinctrl_dev_get_name(struct pinctrl_dev *pctldev); extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev); #else +struct pinctrl_dev; /* Sufficiently stupid default function when pinctrl is not in use */ static inline bool pin_is_valid(struct pinctrl_dev *pctldev, int pin) -- cgit v1.2.3-70-g09d2 From d0985394e7fee6b25a7cc8335d45bc1c1a8ab2d3 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 10 Nov 2011 09:03:55 +0100 Subject: block: Revert "[SCSI] genhd: add a new attribute "alias" in gendisk" This reverts commit a72c5e5eb738033938ab30d6a634b74d1d060f10. The commit introduced alias for block devices which is intended to be used during logging although actual usage hasn't been committed yet. This approach adds very limited benefit (raw log might be easier to follow) which can be trivially implemented in userland but has a lot of problems. It is much worse than netif renames because it doesn't rename the actual device but just adds conveninence name which isn't used universally or enforced. Everything internal including device lookup and sysfs still uses the internal name and nothing prevents two devices from using conflicting alias - ie. sda can have sdb as its alias. This has been nacked by people working on device driver core, block layer and kernel-userland interface and shouldn't have been upstreamed. Revert it. http://thread.gmane.org/gmane.linux.kernel/1155104 http://thread.gmane.org/gmane.linux.scsi/68632 http://thread.gmane.org/gmane.linux.scsi/69776 Signed-off-by: Tejun Heo Acked-by: Greg Kroah-Hartman Acked-by: Kay Sievers Cc: "James E.J. Bottomley" Cc: Nao Nishijima Cc: Alan Cox Cc: Al Viro Signed-off-by: Jens Axboe --- Documentation/ABI/testing/sysfs-block | 13 ------- block/genhd.c | 71 ----------------------------------- include/linux/genhd.h | 4 -- 3 files changed, 88 deletions(-) (limited to 'include/linux') diff --git a/Documentation/ABI/testing/sysfs-block b/Documentation/ABI/testing/sysfs-block index 2b5d56127fc..c1eb41cb987 100644 --- a/Documentation/ABI/testing/sysfs-block +++ b/Documentation/ABI/testing/sysfs-block @@ -206,16 +206,3 @@ Description: when a discarded area is read the discard_zeroes_data parameter will be set to one. Otherwise it will be 0 and the result of reading a discarded area is undefined. -What: /sys/block//alias -Date: Aug 2011 -Contact: Nao Nishijima -Description: - A raw device name of a disk does not always point a same disk - each boot-up time. Therefore, users have to use persistent - device names, which udev creates when the kernel finds a disk, - instead of raw device name. However, kernel doesn't show those - persistent names on its messages (e.g. dmesg). - This file can store an alias of the disk and it would be - appeared in kernel messages if it is set. A disk can have an - alias which length is up to 255bytes. Users can use alphabets, - numbers, "-" and "_" in alias name. This file is writeonce. diff --git a/block/genhd.c b/block/genhd.c index 9253839714f..02e9fca8082 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -19,7 +19,6 @@ #include #include #include -#include #include "blk.h" @@ -916,74 +915,6 @@ static int __init genhd_device_init(void) subsys_initcall(genhd_device_init); -static ssize_t alias_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct gendisk *disk = dev_to_disk(dev); - ssize_t ret = 0; - - if (disk->alias) - ret = snprintf(buf, ALIAS_LEN, "%s\n", disk->alias); - return ret; -} - -static ssize_t alias_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct gendisk *disk = dev_to_disk(dev); - char *alias; - char *envp[] = { NULL, NULL }; - unsigned char c; - int i; - ssize_t ret = count; - - if (!count) - return -EINVAL; - - if (count >= ALIAS_LEN) { - printk(KERN_ERR "alias: alias is too long\n"); - return -EINVAL; - } - - /* Validation check */ - for (i = 0; i < count; i++) { - c = buf[i]; - if (i == count - 1 && c == '\n') - break; - if (!isalnum(c) && c != '_' && c != '-') { - printk(KERN_ERR "alias: invalid alias\n"); - return -EINVAL; - } - } - - if (disk->alias) { - printk(KERN_INFO "alias: %s is already assigned (%s)\n", - disk->disk_name, disk->alias); - return -EINVAL; - } - - alias = kasprintf(GFP_KERNEL, "%s", buf); - if (!alias) - return -ENOMEM; - - if (alias[count - 1] == '\n') - alias[count - 1] = '\0'; - - envp[0] = kasprintf(GFP_KERNEL, "ALIAS=%s", alias); - if (!envp[0]) { - kfree(alias); - return -ENOMEM; - } - - disk->alias = alias; - printk(KERN_INFO "alias: assigned %s to %s\n", alias, disk->disk_name); - - kobject_uevent_env(&dev->kobj, KOBJ_ADD, envp); - - kfree(envp[0]); - return ret; -} - static ssize_t disk_range_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1043,7 +974,6 @@ static ssize_t disk_discard_alignment_show(struct device *dev, return sprintf(buf, "%d\n", queue_discard_alignment(disk->queue)); } -static DEVICE_ATTR(alias, S_IRUGO|S_IWUSR, alias_show, alias_store); static DEVICE_ATTR(range, S_IRUGO, disk_range_show, NULL); static DEVICE_ATTR(ext_range, S_IRUGO, disk_ext_range_show, NULL); static DEVICE_ATTR(removable, S_IRUGO, disk_removable_show, NULL); @@ -1066,7 +996,6 @@ static struct device_attribute dev_attr_fail_timeout = #endif static struct attribute *disk_attrs[] = { - &dev_attr_alias.attr, &dev_attr_range.attr, &dev_attr_ext_range.attr, &dev_attr_removable.attr, diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 9de31bc98c8..6d18f3531f1 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -21,8 +21,6 @@ #define dev_to_part(device) container_of((device), struct hd_struct, __dev) #define disk_to_dev(disk) (&(disk)->part0.__dev) #define part_to_dev(part) (&((part)->__dev)) -#define alias_name(disk) ((disk)->alias ? (disk)->alias : \ - (disk)->disk_name) extern struct device_type part_type; extern struct kobject *block_depr; @@ -60,7 +58,6 @@ enum { #define DISK_MAX_PARTS 256 #define DISK_NAME_LEN 32 -#define ALIAS_LEN 256 #include #include @@ -166,7 +163,6 @@ struct gendisk { * disks that can't be partitioned. */ char disk_name[DISK_NAME_LEN]; /* name of major driver */ - char *alias; /* alias name of disk */ char *(*devnode)(struct gendisk *gd, mode_t *mode); unsigned int events; /* supported events */ -- cgit v1.2.3-70-g09d2 From d65670a78cdbfae94f20a9e05ec705871d7cdf2b Mon Sep 17 00:00:00 2001 From: John Stultz Date: Mon, 31 Oct 2011 17:06:35 -0400 Subject: clocksource: Avoid selecting mult values that might overflow when adjusted For some frequencies, the clocks_calc_mult_shift() function will unfortunately select mult values very close to 0xffffffff. This has the potential to overflow when NTP adjusts the clock, adding to the mult value. This patch adds a clocksource.maxadj value, which provides an approximation of an 11% adjustment(NTP limits adjustments to 500ppm and the tick adjustment is limited to 10%), which could be made to the clocksource.mult value. This is then used to both check that the current mult value won't overflow/underflow, as well as warning us if the timekeeping_adjust() code pushes over that 11% boundary. v2: Fix max_adjustment calculation, and improve WARN_ONCE messages. v3: Don't warn before maxadj has actually been set CC: Yong Zhang CC: David Daney CC: Thomas Gleixner CC: Chen Jie CC: zhangfx CC: stable@kernel.org Reported-by: Chen Jie Reported-by: zhangfx Tested-by: Yong Zhang Signed-off-by: John Stultz --- include/linux/clocksource.h | 3 ++- kernel/time/clocksource.c | 58 +++++++++++++++++++++++++++++++++++++-------- kernel/time/timekeeping.c | 7 ++++++ 3 files changed, 57 insertions(+), 11 deletions(-) (limited to 'include/linux') diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 139c4db55f1..c86c940d1de 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -156,6 +156,7 @@ extern u64 timecounter_cyc2time(struct timecounter *tc, * @mult: cycle to nanosecond multiplier * @shift: cycle to nanosecond divisor (power of two) * @max_idle_ns: max idle time permitted by the clocksource (nsecs) + * @maxadj maximum adjustment value to mult (~11%) * @flags: flags describing special properties * @archdata: arch-specific data * @suspend: suspend function for the clocksource, if necessary @@ -172,7 +173,7 @@ struct clocksource { u32 mult; u32 shift; u64 max_idle_ns; - + u32 maxadj; #ifdef CONFIG_ARCH_CLOCKSOURCE_DATA struct arch_clocksource_data archdata; #endif diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c index cf52fda2e09..cfc65e1eb9f 100644 --- a/kernel/time/clocksource.c +++ b/kernel/time/clocksource.c @@ -491,6 +491,22 @@ void clocksource_touch_watchdog(void) clocksource_resume_watchdog(); } +/** + * clocksource_max_adjustment- Returns max adjustment amount + * @cs: Pointer to clocksource + * + */ +static u32 clocksource_max_adjustment(struct clocksource *cs) +{ + u64 ret; + /* + * We won't try to correct for more then 11% adjustments (110,000 ppm), + */ + ret = (u64)cs->mult * 11; + do_div(ret,100); + return (u32)ret; +} + /** * clocksource_max_deferment - Returns max time the clocksource can be deferred * @cs: Pointer to clocksource @@ -503,25 +519,28 @@ static u64 clocksource_max_deferment(struct clocksource *cs) /* * Calculate the maximum number of cycles that we can pass to the * cyc2ns function without overflowing a 64-bit signed result. The - * maximum number of cycles is equal to ULLONG_MAX/cs->mult which - * is equivalent to the below. - * max_cycles < (2^63)/cs->mult - * max_cycles < 2^(log2((2^63)/cs->mult)) - * max_cycles < 2^(log2(2^63) - log2(cs->mult)) - * max_cycles < 2^(63 - log2(cs->mult)) - * max_cycles < 1 << (63 - log2(cs->mult)) + * maximum number of cycles is equal to ULLONG_MAX/(cs->mult+cs->maxadj) + * which is equivalent to the below. + * max_cycles < (2^63)/(cs->mult + cs->maxadj) + * max_cycles < 2^(log2((2^63)/(cs->mult + cs->maxadj))) + * max_cycles < 2^(log2(2^63) - log2(cs->mult + cs->maxadj)) + * max_cycles < 2^(63 - log2(cs->mult + cs->maxadj)) + * max_cycles < 1 << (63 - log2(cs->mult + cs->maxadj)) * Please note that we add 1 to the result of the log2 to account for * any rounding errors, ensure the above inequality is satisfied and * no overflow will occur. */ - max_cycles = 1ULL << (63 - (ilog2(cs->mult) + 1)); + max_cycles = 1ULL << (63 - (ilog2(cs->mult + cs->maxadj) + 1)); /* * The actual maximum number of cycles we can defer the clocksource is * determined by the minimum of max_cycles and cs->mask. + * Note: Here we subtract the maxadj to make sure we don't sleep for + * too long if there's a large negative adjustment. */ max_cycles = min_t(u64, max_cycles, (u64) cs->mask); - max_nsecs = clocksource_cyc2ns(max_cycles, cs->mult, cs->shift); + max_nsecs = clocksource_cyc2ns(max_cycles, cs->mult - cs->maxadj, + cs->shift); /* * To ensure that the clocksource does not wrap whilst we are idle, @@ -640,7 +659,6 @@ static void clocksource_enqueue(struct clocksource *cs) void __clocksource_updatefreq_scale(struct clocksource *cs, u32 scale, u32 freq) { u64 sec; - /* * Calc the maximum number of seconds which we can run before * wrapping around. For clocksources which have a mask > 32bit @@ -661,6 +679,20 @@ void __clocksource_updatefreq_scale(struct clocksource *cs, u32 scale, u32 freq) clocks_calc_mult_shift(&cs->mult, &cs->shift, freq, NSEC_PER_SEC / scale, sec * scale); + + /* + * for clocksources that have large mults, to avoid overflow. + * Since mult may be adjusted by ntp, add an safety extra margin + * + */ + cs->maxadj = clocksource_max_adjustment(cs); + while ((cs->mult + cs->maxadj < cs->mult) + || (cs->mult - cs->maxadj > cs->mult)) { + cs->mult >>= 1; + cs->shift--; + cs->maxadj = clocksource_max_adjustment(cs); + } + cs->max_idle_ns = clocksource_max_deferment(cs); } EXPORT_SYMBOL_GPL(__clocksource_updatefreq_scale); @@ -701,6 +733,12 @@ EXPORT_SYMBOL_GPL(__clocksource_register_scale); */ int clocksource_register(struct clocksource *cs) { + /* calculate max adjustment for given mult/shift */ + cs->maxadj = clocksource_max_adjustment(cs); + WARN_ONCE(cs->mult + cs->maxadj < cs->mult, + "Clocksource %s might overflow on 11%% adjustment\n", + cs->name); + /* calculate max idle time permitted for this clocksource */ cs->max_idle_ns = clocksource_max_deferment(cs); diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 2b021b0e850..e65ff317110 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -820,6 +820,13 @@ static void timekeeping_adjust(s64 offset) } else return; + WARN_ONCE(timekeeper.clock->maxadj && + (timekeeper.mult + adj > timekeeper.clock->mult + + timekeeper.clock->maxadj), + "Adjusting %s more then 11%% (%ld vs %ld)\n", + timekeeper.clock->name, (long)timekeeper.mult + adj, + (long)timekeeper.clock->mult + + timekeeper.clock->maxadj); timekeeper.mult += adj; timekeeper.xtime_interval += interval; timekeeper.xtime_nsec -= offset; -- cgit v1.2.3-70-g09d2 From 79e7066415a8b12adbeacc41b3dc44423534b8be Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Fri, 11 Nov 2011 16:11:41 +0900 Subject: sh: clkfwk: Kill off remaining debugfs cruft. Now that all of the named string association with clocks has been migrated to clkdev lookups there's no meaningful named topology that can be constructed for a debugfs tree view. Get rid of the left over bits, and shrink struct clk a bit in the process. Signed-off-by: Paul Mundt --- drivers/sh/clk/core.c | 87 -------------------------------------------------- include/linux/sh_clk.h | 1 - 2 files changed, 88 deletions(-) (limited to 'include/linux') diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c index 352036b1f9a..db257a35e71 100644 --- a/drivers/sh/clk/core.c +++ b/drivers/sh/clk/core.c @@ -25,7 +25,6 @@ #include #include #include -#include #include #include #include @@ -225,9 +224,6 @@ int clk_reparent(struct clk *child, struct clk *parent) list_add(&child->sibling, &parent->children); child->parent = parent; - /* now do the debugfs renaming to reattach the child - to the proper parent */ - return 0; } @@ -685,89 +681,6 @@ static int __init clk_syscore_init(void) subsys_initcall(clk_syscore_init); #endif -/* - * debugfs support to trace clock tree hierarchy and attributes - */ -static struct dentry *clk_debugfs_root; - -static int clk_debugfs_register_one(struct clk *c) -{ - int err; - struct dentry *d; - struct clk *pa = c->parent; - char s[255]; - char *p = s; - - p += sprintf(p, "%p", c); - d = debugfs_create_dir(s, pa ? pa->dentry : clk_debugfs_root); - if (!d) - return -ENOMEM; - c->dentry = d; - - d = debugfs_create_u8("usecount", S_IRUGO, c->dentry, (u8 *)&c->usecount); - if (!d) { - err = -ENOMEM; - goto err_out; - } - d = debugfs_create_u32("rate", S_IRUGO, c->dentry, (u32 *)&c->rate); - if (!d) { - err = -ENOMEM; - goto err_out; - } - d = debugfs_create_x32("flags", S_IRUGO, c->dentry, (u32 *)&c->flags); - if (!d) { - err = -ENOMEM; - goto err_out; - } - return 0; - -err_out: - debugfs_remove_recursive(c->dentry); - return err; -} - -static int clk_debugfs_register(struct clk *c) -{ - int err; - struct clk *pa = c->parent; - - if (pa && !pa->dentry) { - err = clk_debugfs_register(pa); - if (err) - return err; - } - - if (!c->dentry) { - err = clk_debugfs_register_one(c); - if (err) - return err; - } - return 0; -} - -static int __init clk_debugfs_init(void) -{ - struct clk *c; - struct dentry *d; - int err; - - d = debugfs_create_dir("clock", NULL); - if (!d) - return -ENOMEM; - clk_debugfs_root = d; - - list_for_each_entry(c, &clock_list, node) { - err = clk_debugfs_register(c); - if (err) - goto err_out; - } - return 0; -err_out: - debugfs_remove_recursive(clk_debugfs_root); - return err; -} -late_initcall(clk_debugfs_init); - static int __init clk_late_init(void) { unsigned long flags; diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index 9237c299641..a20831cf336 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -52,7 +52,6 @@ struct clk { unsigned long arch_flags; void *priv; - struct dentry *dentry; struct clk_mapping *mapping; struct cpufreq_frequency_table *freq_table; unsigned int nr_freqs; -- cgit v1.2.3-70-g09d2 From bd8d0cbaa00883c84741b98264f8318cdade9c71 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 10 Nov 2011 18:45:23 -0800 Subject: ARM: mach-shmobile: move helper macro PORT_DATA_xx to sh_pfc.h This patch move PORT_DATA_xx helper macro to sh_pfc.h. and pfc-sh7372.c used it Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- arch/arm/mach-shmobile/pfc-sh7367.c | 35 ------ arch/arm/mach-shmobile/pfc-sh7372.c | 214 +++++++++++++++++++----------------- arch/arm/mach-shmobile/pfc-sh7377.c | 39 ------- arch/arm/mach-shmobile/pfc-sh73a0.c | 39 ------- include/linux/sh_pfc.h | 36 ++++++ 5 files changed, 151 insertions(+), 212 deletions(-) (limited to 'include/linux') diff --git a/arch/arm/mach-shmobile/pfc-sh7367.c b/arch/arm/mach-shmobile/pfc-sh7367.c index 128555e76e4..25181166e2d 100644 --- a/arch/arm/mach-shmobile/pfc-sh7367.c +++ b/arch/arm/mach-shmobile/pfc-sh7367.c @@ -327,41 +327,6 @@ enum { PINMUX_MARK_END, }; -#define PORT_DATA_I(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN) - -#define PORT_DATA_I_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD) - -#define PORT_DATA_I_PU(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PU) - -#define PORT_DATA_I_PU_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) - -#define PORT_DATA_O(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT) - -#define PORT_DATA_IO(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN) - -#define PORT_DATA_IO_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PD) - -#define PORT_DATA_IO_PU(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PU) - -#define PORT_DATA_IO_PU_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) - - static pinmux_enum_t pinmux_data[] = { /* specify valid pin states for each pin in GPIO mode */ diff --git a/arch/arm/mach-shmobile/pfc-sh7372.c b/arch/arm/mach-shmobile/pfc-sh7372.c index 9c265dae138..34d6d763ec4 100644 --- a/arch/arm/mach-shmobile/pfc-sh7372.c +++ b/arch/arm/mach-shmobile/pfc-sh7372.c @@ -381,108 +381,124 @@ enum { PINMUX_MARK_END, }; -/* PORT_DATA_I_PD(nr) */ -#define _I___D(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD) - -/* PORT_DATA_I_PU(nr) */ -#define _I__U_(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PU) - -/* PORT_DATA_I_PU_PD(nr) */ -#define _I__UD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) - -/* PORT_DATA_O(nr) */ -#define __O___(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT) - -/* PORT_DATA_IO(nr) */ -#define _IO___(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN) - -/* PORT_DATA_IO_PD(nr) */ -#define _IO__D(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PD) - -/* PORT_DATA_IO_PU(nr) */ -#define _IO_U_(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PU) - -/* PORT_DATA_IO_PU_PD(nr) */ -#define _IO_UD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ - PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) - - static pinmux_enum_t pinmux_data[] = { /* specify valid pin states for each pin in GPIO mode */ - - _IO__D(0), _IO__D(1), __O___(2), _I___D(3), _I___D(4), - _I___D(5), _IO_UD(6), _I___D(7), _IO__D(8), __O___(9), - - __O___(10), __O___(11), _IO_UD(12), _IO__D(13), _IO__D(14), - __O___(15), _IO__D(16), _IO__D(17), _I___D(18), _IO___(19), - - _IO___(20), _IO___(21), _IO___(22), _IO___(23), _IO___(24), - _IO___(25), _IO___(26), _IO___(27), _IO___(28), _IO___(29), - - _IO___(30), _IO___(31), _IO___(32), _IO___(33), _IO___(34), - _IO___(35), _IO___(36), _IO___(37), _IO___(38), _IO___(39), - - _IO___(40), _IO___(41), _IO___(42), _IO___(43), _IO___(44), - _IO___(45), _IO_U_(46), _IO_U_(47), _IO_U_(48), _IO_U_(49), - - _IO_U_(50), _IO_U_(51), _IO_U_(52), _IO_U_(53), _IO_U_(54), - _IO_U_(55), _IO_U_(56), _IO_U_(57), _IO_U_(58), _IO_U_(59), - - _IO_U_(60), _IO_U_(61), _IO___(62), __O___(63), __O___(64), - _IO_U_(65), __O___(66), _IO_U_(67), __O___(68), _IO___(69), /*66?*/ - - _IO___(70), _IO___(71), __O___(72), _I__U_(73), _I__UD(74), - _IO_UD(75), _IO_UD(76), _IO_UD(77), _IO_UD(78), _IO_UD(79), - - _IO_UD(80), _IO_UD(81), _IO_UD(82), _IO_UD(83), _IO_UD(84), - _IO_UD(85), _IO_UD(86), _IO_UD(87), _IO_UD(88), _IO_UD(89), - - _IO_UD(90), _IO_UD(91), _IO_UD(92), _IO_UD(93), _IO_UD(94), - _IO_UD(95), _IO_U_(96), _IO_UD(97), _IO_UD(98), __O___(99), /*99?*/ - - _IO__D(100), _IO__D(101), _IO__D(102), _IO__D(103), _IO__D(104), - _IO__D(105), _IO_U_(106), _IO_U_(107), _IO_U_(108), _IO_U_(109), - - _IO_U_(110), _IO_U_(111), _IO__D(112), _IO__D(113), _IO_U_(114), - _IO_U_(115), _IO_U_(116), _IO_U_(117), _IO_U_(118), _IO_U_(119), - - _IO_U_(120), _IO__D(121), _IO__D(122), _IO__D(123), _IO__D(124), - _IO__D(125), _IO__D(126), _IO__D(127), _IO__D(128), _IO_UD(129), - - _IO_UD(130), _IO_UD(131), _IO_UD(132), _IO_UD(133), _IO_UD(134), - _IO_UD(135), _IO__D(136), _IO__D(137), _IO__D(138), _IO__D(139), - - _IO__D(140), _IO__D(141), _IO__D(142), _IO_UD(143), _IO__D(144), - _IO__D(145), _IO__D(146), _IO__D(147), _IO__D(148), _IO__D(149), - - _IO__D(150), _IO__D(151), _IO_UD(152), _I___D(153), _IO_UD(154), - _I___D(155), _IO__D(156), _IO__D(157), _I___D(158), _IO__D(159), - - __O___(160), _IO__D(161), _IO__D(162), _IO__D(163), _I___D(164), - _IO__D(165), _I___D(166), _I___D(167), _I___D(168), _I___D(169), - - _I___D(170), __O___(171), _IO_UD(172), _IO_UD(173), _IO_UD(174), - _IO_UD(175), _IO_UD(176), _IO_UD(177), _IO_UD(178), __O___(179), - - _IO_UD(180), _IO_UD(181), _IO_UD(182), _IO_UD(183), _IO_UD(184), - __O___(185), _IO_UD(186), _IO_UD(187), _IO_UD(188), _IO_UD(189), - - _IO_UD(190), + PORT_DATA_IO_PD(0), PORT_DATA_IO_PD(1), + PORT_DATA_O(2), PORT_DATA_I_PD(3), + PORT_DATA_I_PD(4), PORT_DATA_I_PD(5), + PORT_DATA_IO_PU_PD(6), PORT_DATA_I_PD(7), + PORT_DATA_IO_PD(8), PORT_DATA_O(9), + + PORT_DATA_O(10), PORT_DATA_O(11), + PORT_DATA_IO_PU_PD(12), PORT_DATA_IO_PD(13), + PORT_DATA_IO_PD(14), PORT_DATA_O(15), + PORT_DATA_IO_PD(16), PORT_DATA_IO_PD(17), + PORT_DATA_I_PD(18), PORT_DATA_IO(19), + + PORT_DATA_IO(20), PORT_DATA_IO(21), + PORT_DATA_IO(22), PORT_DATA_IO(23), + PORT_DATA_IO(24), PORT_DATA_IO(25), + PORT_DATA_IO(26), PORT_DATA_IO(27), + PORT_DATA_IO(28), PORT_DATA_IO(29), + + PORT_DATA_IO(30), PORT_DATA_IO(31), + PORT_DATA_IO(32), PORT_DATA_IO(33), + PORT_DATA_IO(34), PORT_DATA_IO(35), + PORT_DATA_IO(36), PORT_DATA_IO(37), + PORT_DATA_IO(38), PORT_DATA_IO(39), + + PORT_DATA_IO(40), PORT_DATA_IO(41), + PORT_DATA_IO(42), PORT_DATA_IO(43), + PORT_DATA_IO(44), PORT_DATA_IO(45), + PORT_DATA_IO_PU(46), PORT_DATA_IO_PU(47), + PORT_DATA_IO_PU(48), PORT_DATA_IO_PU(49), + + PORT_DATA_IO_PU(50), PORT_DATA_IO_PU(51), + PORT_DATA_IO_PU(52), PORT_DATA_IO_PU(53), + PORT_DATA_IO_PU(54), PORT_DATA_IO_PU(55), + PORT_DATA_IO_PU(56), PORT_DATA_IO_PU(57), + PORT_DATA_IO_PU(58), PORT_DATA_IO_PU(59), + + PORT_DATA_IO_PU(60), PORT_DATA_IO_PU(61), + PORT_DATA_IO(62), PORT_DATA_O(63), + PORT_DATA_O(64), PORT_DATA_IO_PU(65), + PORT_DATA_O(66), PORT_DATA_IO_PU(67), /*66?*/ + PORT_DATA_O(68), PORT_DATA_IO(69), + + PORT_DATA_IO(70), PORT_DATA_IO(71), + PORT_DATA_O(72), PORT_DATA_I_PU(73), + PORT_DATA_I_PU_PD(74), PORT_DATA_IO_PU_PD(75), + PORT_DATA_IO_PU_PD(76), PORT_DATA_IO_PU_PD(77), + PORT_DATA_IO_PU_PD(78), PORT_DATA_IO_PU_PD(79), + + PORT_DATA_IO_PU_PD(80), PORT_DATA_IO_PU_PD(81), + PORT_DATA_IO_PU_PD(82), PORT_DATA_IO_PU_PD(83), + PORT_DATA_IO_PU_PD(84), PORT_DATA_IO_PU_PD(85), + PORT_DATA_IO_PU_PD(86), PORT_DATA_IO_PU_PD(87), + PORT_DATA_IO_PU_PD(88), PORT_DATA_IO_PU_PD(89), + + PORT_DATA_IO_PU_PD(90), PORT_DATA_IO_PU_PD(91), + PORT_DATA_IO_PU_PD(92), PORT_DATA_IO_PU_PD(93), + PORT_DATA_IO_PU_PD(94), PORT_DATA_IO_PU_PD(95), + PORT_DATA_IO_PU(96), PORT_DATA_IO_PU_PD(97), + PORT_DATA_IO_PU_PD(98), PORT_DATA_O(99), /*99?*/ + + PORT_DATA_IO_PD(100), PORT_DATA_IO_PD(101), + PORT_DATA_IO_PD(102), PORT_DATA_IO_PD(103), + PORT_DATA_IO_PD(104), PORT_DATA_IO_PD(105), + PORT_DATA_IO_PU(106), PORT_DATA_IO_PU(107), + PORT_DATA_IO_PU(108), PORT_DATA_IO_PU(109), + + PORT_DATA_IO_PU(110), PORT_DATA_IO_PU(111), + PORT_DATA_IO_PD(112), PORT_DATA_IO_PD(113), + PORT_DATA_IO_PU(114), PORT_DATA_IO_PU(115), + PORT_DATA_IO_PU(116), PORT_DATA_IO_PU(117), + PORT_DATA_IO_PU(118), PORT_DATA_IO_PU(119), + + PORT_DATA_IO_PU(120), PORT_DATA_IO_PD(121), + PORT_DATA_IO_PD(122), PORT_DATA_IO_PD(123), + PORT_DATA_IO_PD(124), PORT_DATA_IO_PD(125), + PORT_DATA_IO_PD(126), PORT_DATA_IO_PD(127), + PORT_DATA_IO_PD(128), PORT_DATA_IO_PU_PD(129), + + PORT_DATA_IO_PU_PD(130), PORT_DATA_IO_PU_PD(131), + PORT_DATA_IO_PU_PD(132), PORT_DATA_IO_PU_PD(133), + PORT_DATA_IO_PU_PD(134), PORT_DATA_IO_PU_PD(135), + PORT_DATA_IO_PD(136), PORT_DATA_IO_PD(137), + PORT_DATA_IO_PD(138), PORT_DATA_IO_PD(139), + + PORT_DATA_IO_PD(140), PORT_DATA_IO_PD(141), + PORT_DATA_IO_PD(142), PORT_DATA_IO_PU_PD(143), + PORT_DATA_IO_PD(144), PORT_DATA_IO_PD(145), + PORT_DATA_IO_PD(146), PORT_DATA_IO_PD(147), + PORT_DATA_IO_PD(148), PORT_DATA_IO_PD(149), + + PORT_DATA_IO_PD(150), PORT_DATA_IO_PD(151), + PORT_DATA_IO_PU_PD(152), PORT_DATA_I_PD(153), + PORT_DATA_IO_PU_PD(154), PORT_DATA_I_PD(155), + PORT_DATA_IO_PD(156), PORT_DATA_IO_PD(157), + PORT_DATA_I_PD(158), PORT_DATA_IO_PD(159), + + PORT_DATA_O(160), PORT_DATA_IO_PD(161), + PORT_DATA_IO_PD(162), PORT_DATA_IO_PD(163), + PORT_DATA_I_PD(164), PORT_DATA_IO_PD(165), + PORT_DATA_I_PD(166), PORT_DATA_I_PD(167), + PORT_DATA_I_PD(168), PORT_DATA_I_PD(169), + + PORT_DATA_I_PD(170), PORT_DATA_O(171), + PORT_DATA_IO_PU_PD(172), PORT_DATA_IO_PU_PD(173), + PORT_DATA_IO_PU_PD(174), PORT_DATA_IO_PU_PD(175), + PORT_DATA_IO_PU_PD(176), PORT_DATA_IO_PU_PD(177), + PORT_DATA_IO_PU_PD(178), PORT_DATA_O(179), + + PORT_DATA_IO_PU_PD(180), PORT_DATA_IO_PU_PD(181), + PORT_DATA_IO_PU_PD(182), PORT_DATA_IO_PU_PD(183), + PORT_DATA_IO_PU_PD(184), PORT_DATA_O(185), + PORT_DATA_IO_PU_PD(186), PORT_DATA_IO_PU_PD(187), + PORT_DATA_IO_PU_PD(188), PORT_DATA_IO_PU_PD(189), + + PORT_DATA_IO_PU_PD(190), /* IRQ */ PINMUX_DATA(IRQ0_6_MARK, PORT6_FN0, MSEL1CR_0_0), diff --git a/arch/arm/mach-shmobile/pfc-sh7377.c b/arch/arm/mach-shmobile/pfc-sh7377.c index 613e6842ad0..e4c70183e54 100644 --- a/arch/arm/mach-shmobile/pfc-sh7377.c +++ b/arch/arm/mach-shmobile/pfc-sh7377.c @@ -360,45 +360,6 @@ enum { PINMUX_MARK_END, }; -#define PORT_DATA_I(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN) - -#define PORT_DATA_I_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD) - -#define PORT_DATA_I_PU(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PU) - -#define PORT_DATA_I_PU_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD, \ - PORT##nr##_IN_PU) - -#define PORT_DATA_O(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT) - -#define PORT_DATA_IO(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT, PORT##nr##_IN) - -#define PORT_DATA_IO_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT, PORT##nr##_IN, \ - PORT##nr##_IN_PD) - -#define PORT_DATA_IO_PU(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT, PORT##nr##_IN, \ - PORT##nr##_IN_PU) - -#define PORT_DATA_IO_PU_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT, PORT##nr##_IN, \ - PORT##nr##_IN_PD, PORT##nr##_IN_PU) - static pinmux_enum_t pinmux_data[] = { /* specify valid pin states for each pin in GPIO mode */ /* 55-1 (GPIO) */ diff --git a/arch/arm/mach-shmobile/pfc-sh73a0.c b/arch/arm/mach-shmobile/pfc-sh73a0.c index a2d99b3a9fa..f860caa9667 100644 --- a/arch/arm/mach-shmobile/pfc-sh73a0.c +++ b/arch/arm/mach-shmobile/pfc-sh73a0.c @@ -525,45 +525,6 @@ enum { PINMUX_MARK_END, }; -#define PORT_DATA_I(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN) - -#define PORT_DATA_I_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD) - -#define PORT_DATA_I_PU(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PU) - -#define PORT_DATA_I_PU_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_IN, PORT##nr##_IN_PD, \ - PORT##nr##_IN_PU) - -#define PORT_DATA_O(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT) - -#define PORT_DATA_IO(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT, PORT##nr##_IN) - -#define PORT_DATA_IO_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT, PORT##nr##_IN, \ - PORT##nr##_IN_PD) - -#define PORT_DATA_IO_PU(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT, PORT##nr##_IN, \ - PORT##nr##_IN_PU) - -#define PORT_DATA_IO_PU_PD(nr) \ - PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ - PORT##nr##_OUT, PORT##nr##_IN, \ - PORT##nr##_IN_PD, PORT##nr##_IN_PU) - static pinmux_enum_t pinmux_data[] = { /* specify valid pin states for each pin in GPIO mode */ diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index bc8c9208f7e..5585f280dc1 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -104,4 +104,40 @@ struct pinmux_info { int register_pinmux(struct pinmux_info *pip); int unregister_pinmux(struct pinmux_info *pip); +/* helper macro for pinmux_enum_t */ +#define PORT_DATA_I(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN) + +#define PORT_DATA_I_PD(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ + PORT##nr##_IN, PORT##nr##_IN_PD) + +#define PORT_DATA_I_PU(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ + PORT##nr##_IN, PORT##nr##_IN_PU) + +#define PORT_DATA_I_PU_PD(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \ + PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) + +#define PORT_DATA_O(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT) + +#define PORT_DATA_IO(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ + PORT##nr##_IN) + +#define PORT_DATA_IO_PD(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ + PORT##nr##_IN, PORT##nr##_IN_PD) + +#define PORT_DATA_IO_PU(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ + PORT##nr##_IN, PORT##nr##_IN_PU) + +#define PORT_DATA_IO_PU_PD(nr) \ + PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ + PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) + + #endif /* __SH_PFC_H */ -- cgit v1.2.3-70-g09d2 From 972c3fb69cd1cd8d549b8a06ce42611eab405c20 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 10 Nov 2011 18:45:33 -0800 Subject: ARM: mach-shmobile: move helper macro PORT_xx to sh_pfc.h This patch moves PORT_xx helper macro to sh_pfc.h, and it expects CPU_ALL_PORT() macro for each CPU Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- arch/arm/mach-shmobile/pfc-sh7367.c | 71 ++++++++---------------- arch/arm/mach-shmobile/pfc-sh7372.c | 32 +++-------- arch/arm/mach-shmobile/pfc-sh7377.c | 103 +++++++++++++--------------------- arch/arm/mach-shmobile/pfc-sh73a0.c | 108 +++++++++++++++--------------------- include/linux/sh_pfc.h | 23 ++++++++ 5 files changed, 140 insertions(+), 197 deletions(-) (limited to 'include/linux') diff --git a/arch/arm/mach-shmobile/pfc-sh7367.c b/arch/arm/mach-shmobile/pfc-sh7367.c index 25181166e2d..32fbf0206b3 100644 --- a/arch/arm/mach-shmobile/pfc-sh7367.c +++ b/arch/arm/mach-shmobile/pfc-sh7367.c @@ -21,68 +21,49 @@ #include #include -#define _1(fn, pfx, sfx) fn(pfx, sfx) - -#define _10(fn, pfx, sfx) \ - _1(fn, pfx##0, sfx), _1(fn, pfx##1, sfx), \ - _1(fn, pfx##2, sfx), _1(fn, pfx##3, sfx), \ - _1(fn, pfx##4, sfx), _1(fn, pfx##5, sfx), \ - _1(fn, pfx##6, sfx), _1(fn, pfx##7, sfx), \ - _1(fn, pfx##8, sfx), _1(fn, pfx##9, sfx) - -#define _90(fn, pfx, sfx) \ - _10(fn, pfx##1, sfx), _10(fn, pfx##2, sfx), \ - _10(fn, pfx##3, sfx), _10(fn, pfx##4, sfx), \ - _10(fn, pfx##5, sfx), _10(fn, pfx##6, sfx), \ - _10(fn, pfx##7, sfx), _10(fn, pfx##8, sfx), \ - _10(fn, pfx##9, sfx) - -#define _273(fn, pfx, sfx) \ - _10(fn, pfx, sfx), _90(fn, pfx, sfx), \ - _10(fn, pfx##10, sfx), _90(fn, pfx##1, sfx), \ - _10(fn, pfx##20, sfx), _10(fn, pfx##21, sfx), \ - _10(fn, pfx##22, sfx), _10(fn, pfx##23, sfx), \ - _10(fn, pfx##24, sfx), _10(fn, pfx##25, sfx), \ - _10(fn, pfx##26, sfx), _1(fn, pfx##270, sfx), \ - _1(fn, pfx##271, sfx), _1(fn, pfx##272, sfx) - -#define _PORT(pfx, sfx) pfx##_##sfx -#define PORT_273(str) _273(_PORT, PORT, str) +#define CPU_ALL_PORT(fn, pfx, sfx) \ + PORT_10(fn, pfx, sfx), PORT_90(fn, pfx, sfx), \ + PORT_10(fn, pfx##10, sfx), PORT_90(fn, pfx##1, sfx), \ + PORT_10(fn, pfx##20, sfx), PORT_10(fn, pfx##21, sfx), \ + PORT_10(fn, pfx##22, sfx), PORT_10(fn, pfx##23, sfx), \ + PORT_10(fn, pfx##24, sfx), PORT_10(fn, pfx##25, sfx), \ + PORT_10(fn, pfx##26, sfx), PORT_1(fn, pfx##270, sfx), \ + PORT_1(fn, pfx##271, sfx), PORT_1(fn, pfx##272, sfx) enum { PINMUX_RESERVED = 0, PINMUX_DATA_BEGIN, - PORT_273(DATA), /* PORT0_DATA -> PORT272_DATA */ + PORT_ALL(DATA), /* PORT0_DATA -> PORT272_DATA */ PINMUX_DATA_END, PINMUX_INPUT_BEGIN, - PORT_273(IN), /* PORT0_IN -> PORT272_IN */ + PORT_ALL(IN), /* PORT0_IN -> PORT272_IN */ PINMUX_INPUT_END, PINMUX_INPUT_PULLUP_BEGIN, - PORT_273(IN_PU), /* PORT0_IN_PU -> PORT272_IN_PU */ + PORT_ALL(IN_PU), /* PORT0_IN_PU -> PORT272_IN_PU */ PINMUX_INPUT_PULLUP_END, PINMUX_INPUT_PULLDOWN_BEGIN, - PORT_273(IN_PD), /* PORT0_IN_PD -> PORT272_IN_PD */ + PORT_ALL(IN_PD), /* PORT0_IN_PD -> PORT272_IN_PD */ PINMUX_INPUT_PULLDOWN_END, PINMUX_OUTPUT_BEGIN, - PORT_273(OUT), /* PORT0_OUT -> PORT272_OUT */ + PORT_ALL(OUT), /* PORT0_OUT -> PORT272_OUT */ PINMUX_OUTPUT_END, PINMUX_FUNCTION_BEGIN, - PORT_273(FN_IN), /* PORT0_FN_IN -> PORT272_FN_IN */ - PORT_273(FN_OUT), /* PORT0_FN_OUT -> PORT272_FN_OUT */ - PORT_273(FN0), /* PORT0_FN0 -> PORT272_FN0 */ - PORT_273(FN1), /* PORT0_FN1 -> PORT272_FN1 */ - PORT_273(FN2), /* PORT0_FN2 -> PORT272_FN2 */ - PORT_273(FN3), /* PORT0_FN3 -> PORT272_FN3 */ - PORT_273(FN4), /* PORT0_FN4 -> PORT272_FN4 */ - PORT_273(FN5), /* PORT0_FN5 -> PORT272_FN5 */ - PORT_273(FN6), /* PORT0_FN6 -> PORT272_FN6 */ - PORT_273(FN7), /* PORT0_FN7 -> PORT272_FN7 */ + PORT_ALL(FN_IN), /* PORT0_FN_IN -> PORT272_FN_IN */ + PORT_ALL(FN_OUT), /* PORT0_FN_OUT -> PORT272_FN_OUT */ + PORT_ALL(FN0), /* PORT0_FN0 -> PORT272_FN0 */ + PORT_ALL(FN1), /* PORT0_FN1 -> PORT272_FN1 */ + PORT_ALL(FN2), /* PORT0_FN2 -> PORT272_FN2 */ + PORT_ALL(FN3), /* PORT0_FN3 -> PORT272_FN3 */ + PORT_ALL(FN4), /* PORT0_FN4 -> PORT272_FN4 */ + PORT_ALL(FN5), /* PORT0_FN5 -> PORT272_FN5 */ + PORT_ALL(FN6), /* PORT0_FN6 -> PORT272_FN6 */ + PORT_ALL(FN7), /* PORT0_FN7 -> PORT272_FN7 */ MSELBCR_MSEL2_1, MSELBCR_MSEL2_0, PINMUX_FUNCTION_END, @@ -1063,13 +1044,9 @@ static pinmux_enum_t pinmux_data[] = { PINMUX_DATA(DIVLOCK_MARK, PORT272_FN1), }; -#define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA) -#define GPIO_PORT_273() _273(_GPIO_PORT, , unused) -#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK) - static struct pinmux_gpio pinmux_gpios[] = { /* 49-1 -> 49-6 (GPIO) */ - GPIO_PORT_273(), + GPIO_PORT_ALL(), /* Special Pull-up / Pull-down Functions */ GPIO_FN(PORT48_KEYIN0_PU), GPIO_FN(PORT49_KEYIN1_PU), diff --git a/arch/arm/mach-shmobile/pfc-sh7372.c b/arch/arm/mach-shmobile/pfc-sh7372.c index 34d6d763ec4..4b43626598c 100644 --- a/arch/arm/mach-shmobile/pfc-sh7372.c +++ b/arch/arm/mach-shmobile/pfc-sh7372.c @@ -25,27 +25,13 @@ #include #include -#define _1(fn, pfx, sfx) fn(pfx, sfx) - -#define _10(fn, pfx, sfx) \ - _1(fn, pfx##0, sfx), _1(fn, pfx##1, sfx), \ - _1(fn, pfx##2, sfx), _1(fn, pfx##3, sfx), \ - _1(fn, pfx##4, sfx), _1(fn, pfx##5, sfx), \ - _1(fn, pfx##6, sfx), _1(fn, pfx##7, sfx), \ - _1(fn, pfx##8, sfx), _1(fn, pfx##9, sfx) - -#define _80(fn, pfx, sfx) \ - _10(fn, pfx##1, sfx), _10(fn, pfx##2, sfx), \ - _10(fn, pfx##3, sfx), _10(fn, pfx##4, sfx), \ - _10(fn, pfx##5, sfx), _10(fn, pfx##6, sfx), \ - _10(fn, pfx##7, sfx), _10(fn, pfx##8, sfx) - -#define _190(fn, pfx, sfx) \ - _10(fn, pfx, sfx), _80(fn, pfx, sfx), _10(fn, pfx##9, sfx), \ - _10(fn, pfx##10, sfx), _80(fn, pfx##1, sfx), _1(fn, pfx##190, sfx) - -#define _PORT(pfx, sfx) pfx##_##sfx -#define PORT_ALL(str) _190(_PORT, PORT, str) +#define CPU_ALL_PORT(fn, pfx, sfx) \ + PORT_10(fn, pfx, sfx), PORT_90(fn, pfx, sfx), \ + PORT_10(fn, pfx##10, sfx), PORT_10(fn, pfx##11, sfx), \ + PORT_10(fn, pfx##12, sfx), PORT_10(fn, pfx##13, sfx), \ + PORT_10(fn, pfx##14, sfx), PORT_10(fn, pfx##15, sfx), \ + PORT_10(fn, pfx##16, sfx), PORT_10(fn, pfx##17, sfx), \ + PORT_10(fn, pfx##18, sfx), PORT_1(fn, pfx##190, sfx) enum { PINMUX_RESERVED = 0, @@ -942,10 +928,6 @@ static pinmux_enum_t pinmux_data[] = { PINMUX_DATA(MFIv4_MARK, MSEL4CR_6_1), }; -#define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA) -#define GPIO_PORT_ALL() _190(_GPIO_PORT, , unused) -#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK) - static struct pinmux_gpio pinmux_gpios[] = { /* PORT */ diff --git a/arch/arm/mach-shmobile/pfc-sh7377.c b/arch/arm/mach-shmobile/pfc-sh7377.c index e4c70183e54..fb3cfd3cff4 100644 --- a/arch/arm/mach-shmobile/pfc-sh7377.c +++ b/arch/arm/mach-shmobile/pfc-sh7377.c @@ -22,84 +22,65 @@ #include #include -#define _1(fn, pfx, sfx) fn(pfx, sfx) - -#define _10(fn, pfx, sfx) \ - _1(fn, pfx##0, sfx), _1(fn, pfx##1, sfx), \ - _1(fn, pfx##2, sfx), _1(fn, pfx##3, sfx), \ - _1(fn, pfx##4, sfx), _1(fn, pfx##5, sfx), \ - _1(fn, pfx##6, sfx), _1(fn, pfx##7, sfx), \ - _1(fn, pfx##8, sfx), _1(fn, pfx##9, sfx) - -#define _90(fn, pfx, sfx) \ - _10(fn, pfx##1, sfx), _10(fn, pfx##2, sfx), \ - _10(fn, pfx##3, sfx), _10(fn, pfx##4, sfx), \ - _10(fn, pfx##5, sfx), _10(fn, pfx##6, sfx), \ - _10(fn, pfx##7, sfx), _10(fn, pfx##8, sfx), \ - _10(fn, pfx##9, sfx) - -#define _265(fn, pfx, sfx) \ - _10(fn, pfx, sfx), _90(fn, pfx, sfx), \ - _10(fn, pfx##10, sfx), \ - _1(fn, pfx##110, sfx), _1(fn, pfx##111, sfx), \ - _1(fn, pfx##112, sfx), _1(fn, pfx##113, sfx), \ - _1(fn, pfx##114, sfx), _1(fn, pfx##115, sfx), \ - _1(fn, pfx##116, sfx), _1(fn, pfx##117, sfx), \ - _1(fn, pfx##118, sfx), \ - _1(fn, pfx##128, sfx), _1(fn, pfx##129, sfx), \ - _10(fn, pfx##13, sfx), _10(fn, pfx##14, sfx), \ - _10(fn, pfx##15, sfx), \ - _1(fn, pfx##160, sfx), _1(fn, pfx##161, sfx), \ - _1(fn, pfx##162, sfx), _1(fn, pfx##163, sfx), \ - _1(fn, pfx##164, sfx), \ - _1(fn, pfx##192, sfx), _1(fn, pfx##193, sfx), \ - _1(fn, pfx##194, sfx), _1(fn, pfx##195, sfx), \ - _1(fn, pfx##196, sfx), _1(fn, pfx##197, sfx), \ - _1(fn, pfx##198, sfx), _1(fn, pfx##199, sfx), \ - _10(fn, pfx##20, sfx), _10(fn, pfx##21, sfx), \ - _10(fn, pfx##22, sfx), _10(fn, pfx##23, sfx), \ - _10(fn, pfx##24, sfx), _10(fn, pfx##25, sfx), \ - _1(fn, pfx##260, sfx), _1(fn, pfx##261, sfx), \ - _1(fn, pfx##262, sfx), _1(fn, pfx##263, sfx), \ - _1(fn, pfx##264, sfx) - -#define _PORT(pfx, sfx) pfx##_##sfx -#define PORT_265(str) _265(_PORT, PORT, str) +#define CPU_ALL_PORT(fn, pfx, sfx) \ + PORT_10(fn, pfx, sfx), PORT_90(fn, pfx, sfx), \ + PORT_10(fn, pfx##10, sfx), \ + PORT_1(fn, pfx##110, sfx), PORT_1(fn, pfx##111, sfx), \ + PORT_1(fn, pfx##112, sfx), PORT_1(fn, pfx##113, sfx), \ + PORT_1(fn, pfx##114, sfx), PORT_1(fn, pfx##115, sfx), \ + PORT_1(fn, pfx##116, sfx), PORT_1(fn, pfx##117, sfx), \ + PORT_1(fn, pfx##118, sfx), \ + PORT_1(fn, pfx##128, sfx), PORT_1(fn, pfx##129, sfx), \ + PORT_10(fn, pfx##13, sfx), PORT_10(fn, pfx##14, sfx), \ + PORT_10(fn, pfx##15, sfx), \ + PORT_1(fn, pfx##160, sfx), PORT_1(fn, pfx##161, sfx), \ + PORT_1(fn, pfx##162, sfx), PORT_1(fn, pfx##163, sfx), \ + PORT_1(fn, pfx##164, sfx), \ + PORT_1(fn, pfx##192, sfx), PORT_1(fn, pfx##193, sfx), \ + PORT_1(fn, pfx##194, sfx), PORT_1(fn, pfx##195, sfx), \ + PORT_1(fn, pfx##196, sfx), PORT_1(fn, pfx##197, sfx), \ + PORT_1(fn, pfx##198, sfx), PORT_1(fn, pfx##199, sfx), \ + PORT_10(fn, pfx##20, sfx), PORT_10(fn, pfx##21, sfx), \ + PORT_10(fn, pfx##22, sfx), PORT_10(fn, pfx##23, sfx), \ + PORT_10(fn, pfx##24, sfx), PORT_10(fn, pfx##25, sfx), \ + PORT_1(fn, pfx##260, sfx), PORT_1(fn, pfx##261, sfx), \ + PORT_1(fn, pfx##262, sfx), PORT_1(fn, pfx##263, sfx), \ + PORT_1(fn, pfx##264, sfx) enum { PINMUX_RESERVED = 0, PINMUX_DATA_BEGIN, - PORT_265(DATA), /* PORT0_DATA -> PORT264_DATA */ + PORT_ALL(DATA), /* PORT0_DATA -> PORT264_DATA */ PINMUX_DATA_END, PINMUX_INPUT_BEGIN, - PORT_265(IN), /* PORT0_IN -> PORT264_IN */ + PORT_ALL(IN), /* PORT0_IN -> PORT264_IN */ PINMUX_INPUT_END, PINMUX_INPUT_PULLUP_BEGIN, - PORT_265(IN_PU), /* PORT0_IN_PU -> PORT264_IN_PU */ + PORT_ALL(IN_PU), /* PORT0_IN_PU -> PORT264_IN_PU */ PINMUX_INPUT_PULLUP_END, PINMUX_INPUT_PULLDOWN_BEGIN, - PORT_265(IN_PD), /* PORT0_IN_PD -> PORT264_IN_PD */ + PORT_ALL(IN_PD), /* PORT0_IN_PD -> PORT264_IN_PD */ PINMUX_INPUT_PULLDOWN_END, PINMUX_OUTPUT_BEGIN, - PORT_265(OUT), /* PORT0_OUT -> PORT264_OUT */ + PORT_ALL(OUT), /* PORT0_OUT -> PORT264_OUT */ PINMUX_OUTPUT_END, PINMUX_FUNCTION_BEGIN, - PORT_265(FN_IN), /* PORT0_FN_IN -> PORT264_FN_IN */ - PORT_265(FN_OUT), /* PORT0_FN_OUT -> PORT264_FN_OUT */ - PORT_265(FN0), /* PORT0_FN0 -> PORT264_FN0 */ - PORT_265(FN1), /* PORT0_FN1 -> PORT264_FN1 */ - PORT_265(FN2), /* PORT0_FN2 -> PORT264_FN2 */ - PORT_265(FN3), /* PORT0_FN3 -> PORT264_FN3 */ - PORT_265(FN4), /* PORT0_FN4 -> PORT264_FN4 */ - PORT_265(FN5), /* PORT0_FN5 -> PORT264_FN5 */ - PORT_265(FN6), /* PORT0_FN6 -> PORT264_FN6 */ - PORT_265(FN7), /* PORT0_FN7 -> PORT264_FN7 */ + PORT_ALL(FN_IN), /* PORT0_FN_IN -> PORT264_FN_IN */ + PORT_ALL(FN_OUT), /* PORT0_FN_OUT -> PORT264_FN_OUT */ + PORT_ALL(FN0), /* PORT0_FN0 -> PORT264_FN0 */ + PORT_ALL(FN1), /* PORT0_FN1 -> PORT264_FN1 */ + PORT_ALL(FN2), /* PORT0_FN2 -> PORT264_FN2 */ + PORT_ALL(FN3), /* PORT0_FN3 -> PORT264_FN3 */ + PORT_ALL(FN4), /* PORT0_FN4 -> PORT264_FN4 */ + PORT_ALL(FN5), /* PORT0_FN5 -> PORT264_FN5 */ + PORT_ALL(FN6), /* PORT0_FN6 -> PORT264_FN6 */ + PORT_ALL(FN7), /* PORT0_FN7 -> PORT264_FN7 */ MSELBCR_MSEL17_1, MSELBCR_MSEL17_0, MSELBCR_MSEL16_1, MSELBCR_MSEL16_0, @@ -1039,13 +1020,9 @@ static pinmux_enum_t pinmux_data[] = { PINMUX_DATA(RESETOUTS_MARK, PORT264_FN1), }; -#define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA) -#define GPIO_PORT_265() _265(_GPIO_PORT, , unused) -#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK) - static struct pinmux_gpio pinmux_gpios[] = { /* 55-1 -> 55-5 (GPIO) */ - GPIO_PORT_265(), + GPIO_PORT_ALL(), /* Special Pull-up / Pull-down Functions */ GPIO_FN(PORT66_KEYIN0_PU), GPIO_FN(PORT67_KEYIN1_PU), diff --git a/arch/arm/mach-shmobile/pfc-sh73a0.c b/arch/arm/mach-shmobile/pfc-sh73a0.c index f860caa9667..a1ea11956b1 100644 --- a/arch/arm/mach-shmobile/pfc-sh73a0.c +++ b/arch/arm/mach-shmobile/pfc-sh73a0.c @@ -24,83 +24,71 @@ #include #include -#define _1(fn, pfx, sfx) fn(pfx, sfx) - -#define _10(fn, pfx, sfx) \ - _1(fn, pfx##0, sfx), _1(fn, pfx##1, sfx), \ - _1(fn, pfx##2, sfx), _1(fn, pfx##3, sfx), \ - _1(fn, pfx##4, sfx), _1(fn, pfx##5, sfx), \ - _1(fn, pfx##6, sfx), _1(fn, pfx##7, sfx), \ - _1(fn, pfx##8, sfx), _1(fn, pfx##9, sfx) - -#define _310(fn, pfx, sfx) \ - _10(fn, pfx, sfx), _10(fn, pfx##1, sfx), \ - _10(fn, pfx##2, sfx), _10(fn, pfx##3, sfx), \ - _10(fn, pfx##4, sfx), _10(fn, pfx##5, sfx), \ - _10(fn, pfx##6, sfx), _10(fn, pfx##7, sfx), \ - _10(fn, pfx##8, sfx), _10(fn, pfx##9, sfx), \ - _10(fn, pfx##10, sfx), \ - _1(fn, pfx##110, sfx), _1(fn, pfx##111, sfx), \ - _1(fn, pfx##112, sfx), _1(fn, pfx##113, sfx), \ - _1(fn, pfx##114, sfx), _1(fn, pfx##115, sfx), \ - _1(fn, pfx##116, sfx), _1(fn, pfx##117, sfx), \ - _1(fn, pfx##118, sfx), \ - _1(fn, pfx##128, sfx), _1(fn, pfx##129, sfx), \ - _10(fn, pfx##13, sfx), _10(fn, pfx##14, sfx), \ - _10(fn, pfx##15, sfx), \ - _1(fn, pfx##160, sfx), _1(fn, pfx##161, sfx), \ - _1(fn, pfx##162, sfx), _1(fn, pfx##163, sfx), \ - _1(fn, pfx##164, sfx), \ - _1(fn, pfx##192, sfx), _1(fn, pfx##193, sfx), \ - _1(fn, pfx##194, sfx), _1(fn, pfx##195, sfx), \ - _1(fn, pfx##196, sfx), _1(fn, pfx##197, sfx), \ - _1(fn, pfx##198, sfx), _1(fn, pfx##199, sfx), \ - _10(fn, pfx##20, sfx), _10(fn, pfx##21, sfx), \ - _10(fn, pfx##22, sfx), _10(fn, pfx##23, sfx), \ - _10(fn, pfx##24, sfx), _10(fn, pfx##25, sfx), \ - _10(fn, pfx##26, sfx), _10(fn, pfx##27, sfx), \ - _1(fn, pfx##280, sfx), _1(fn, pfx##281, sfx), \ - _1(fn, pfx##282, sfx), \ - _1(fn, pfx##288, sfx), _1(fn, pfx##289, sfx), \ - _10(fn, pfx##29, sfx), _10(fn, pfx##30, sfx) - -#define _PORT(pfx, sfx) pfx##_##sfx -#define PORT_310(str) _310(_PORT, PORT, str) +#define CPU_ALL_PORT(fn, pfx, sfx) \ + PORT_10(fn, pfx, sfx), PORT_10(fn, pfx##1, sfx), \ + PORT_10(fn, pfx##2, sfx), PORT_10(fn, pfx##3, sfx), \ + PORT_10(fn, pfx##4, sfx), PORT_10(fn, pfx##5, sfx), \ + PORT_10(fn, pfx##6, sfx), PORT_10(fn, pfx##7, sfx), \ + PORT_10(fn, pfx##8, sfx), PORT_10(fn, pfx##9, sfx), \ + PORT_10(fn, pfx##10, sfx), \ + PORT_1(fn, pfx##110, sfx), PORT_1(fn, pfx##111, sfx), \ + PORT_1(fn, pfx##112, sfx), PORT_1(fn, pfx##113, sfx), \ + PORT_1(fn, pfx##114, sfx), PORT_1(fn, pfx##115, sfx), \ + PORT_1(fn, pfx##116, sfx), PORT_1(fn, pfx##117, sfx), \ + PORT_1(fn, pfx##118, sfx), \ + PORT_1(fn, pfx##128, sfx), PORT_1(fn, pfx##129, sfx), \ + PORT_10(fn, pfx##13, sfx), PORT_10(fn, pfx##14, sfx), \ + PORT_10(fn, pfx##15, sfx), \ + PORT_1(fn, pfx##160, sfx), PORT_1(fn, pfx##161, sfx), \ + PORT_1(fn, pfx##162, sfx), PORT_1(fn, pfx##163, sfx), \ + PORT_1(fn, pfx##164, sfx), \ + PORT_1(fn, pfx##192, sfx), PORT_1(fn, pfx##193, sfx), \ + PORT_1(fn, pfx##194, sfx), PORT_1(fn, pfx##195, sfx), \ + PORT_1(fn, pfx##196, sfx), PORT_1(fn, pfx##197, sfx), \ + PORT_1(fn, pfx##198, sfx), PORT_1(fn, pfx##199, sfx), \ + PORT_10(fn, pfx##20, sfx), PORT_10(fn, pfx##21, sfx), \ + PORT_10(fn, pfx##22, sfx), PORT_10(fn, pfx##23, sfx), \ + PORT_10(fn, pfx##24, sfx), PORT_10(fn, pfx##25, sfx), \ + PORT_10(fn, pfx##26, sfx), PORT_10(fn, pfx##27, sfx), \ + PORT_1(fn, pfx##280, sfx), PORT_1(fn, pfx##281, sfx), \ + PORT_1(fn, pfx##282, sfx), \ + PORT_1(fn, pfx##288, sfx), PORT_1(fn, pfx##289, sfx), \ + PORT_10(fn, pfx##29, sfx), PORT_10(fn, pfx##30, sfx) enum { PINMUX_RESERVED = 0, PINMUX_DATA_BEGIN, - PORT_310(DATA), /* PORT0_DATA -> PORT309_DATA */ + PORT_ALL(DATA), /* PORT0_DATA -> PORT309_DATA */ PINMUX_DATA_END, PINMUX_INPUT_BEGIN, - PORT_310(IN), /* PORT0_IN -> PORT309_IN */ + PORT_ALL(IN), /* PORT0_IN -> PORT309_IN */ PINMUX_INPUT_END, PINMUX_INPUT_PULLUP_BEGIN, - PORT_310(IN_PU), /* PORT0_IN_PU -> PORT309_IN_PU */ + PORT_ALL(IN_PU), /* PORT0_IN_PU -> PORT309_IN_PU */ PINMUX_INPUT_PULLUP_END, PINMUX_INPUT_PULLDOWN_BEGIN, - PORT_310(IN_PD), /* PORT0_IN_PD -> PORT309_IN_PD */ + PORT_ALL(IN_PD), /* PORT0_IN_PD -> PORT309_IN_PD */ PINMUX_INPUT_PULLDOWN_END, PINMUX_OUTPUT_BEGIN, - PORT_310(OUT), /* PORT0_OUT -> PORT309_OUT */ + PORT_ALL(OUT), /* PORT0_OUT -> PORT309_OUT */ PINMUX_OUTPUT_END, PINMUX_FUNCTION_BEGIN, - PORT_310(FN_IN), /* PORT0_FN_IN -> PORT309_FN_IN */ - PORT_310(FN_OUT), /* PORT0_FN_OUT -> PORT309_FN_OUT */ - PORT_310(FN0), /* PORT0_FN0 -> PORT309_FN0 */ - PORT_310(FN1), /* PORT0_FN1 -> PORT309_FN1 */ - PORT_310(FN2), /* PORT0_FN2 -> PORT309_FN2 */ - PORT_310(FN3), /* PORT0_FN3 -> PORT309_FN3 */ - PORT_310(FN4), /* PORT0_FN4 -> PORT309_FN4 */ - PORT_310(FN5), /* PORT0_FN5 -> PORT309_FN5 */ - PORT_310(FN6), /* PORT0_FN6 -> PORT309_FN6 */ - PORT_310(FN7), /* PORT0_FN7 -> PORT309_FN7 */ + PORT_ALL(FN_IN), /* PORT0_FN_IN -> PORT309_FN_IN */ + PORT_ALL(FN_OUT), /* PORT0_FN_OUT -> PORT309_FN_OUT */ + PORT_ALL(FN0), /* PORT0_FN0 -> PORT309_FN0 */ + PORT_ALL(FN1), /* PORT0_FN1 -> PORT309_FN1 */ + PORT_ALL(FN2), /* PORT0_FN2 -> PORT309_FN2 */ + PORT_ALL(FN3), /* PORT0_FN3 -> PORT309_FN3 */ + PORT_ALL(FN4), /* PORT0_FN4 -> PORT309_FN4 */ + PORT_ALL(FN5), /* PORT0_FN5 -> PORT309_FN5 */ + PORT_ALL(FN6), /* PORT0_FN6 -> PORT309_FN6 */ + PORT_ALL(FN7), /* PORT0_FN7 -> PORT309_FN7 */ MSEL2CR_MSEL19_0, MSEL2CR_MSEL19_1, MSEL2CR_MSEL18_0, MSEL2CR_MSEL18_1, @@ -1555,12 +1543,8 @@ static pinmux_enum_t pinmux_data[] = { PINMUX_DATA(FSIAISLD_PU_MARK, PORT55_FN1, PORT55_IN_PU), }; -#define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA) -#define GPIO_PORT_310() _310(_GPIO_PORT, , unused) -#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK) - static struct pinmux_gpio pinmux_gpios[] = { - GPIO_PORT_310(), + GPIO_PORT_ALL(), /* Table 25-1 (Functions 0-7) */ GPIO_FN(VBUS_0), diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 5585f280dc1..5f6322ac63e 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -104,6 +104,29 @@ struct pinmux_info { int register_pinmux(struct pinmux_info *pip); int unregister_pinmux(struct pinmux_info *pip); +/* helper macro for port */ +#define PORT_1(fn, pfx, sfx) fn(pfx, sfx) + +#define PORT_10(fn, pfx, sfx) \ + PORT_1(fn, pfx##0, sfx), PORT_1(fn, pfx##1, sfx), \ + PORT_1(fn, pfx##2, sfx), PORT_1(fn, pfx##3, sfx), \ + PORT_1(fn, pfx##4, sfx), PORT_1(fn, pfx##5, sfx), \ + PORT_1(fn, pfx##6, sfx), PORT_1(fn, pfx##7, sfx), \ + PORT_1(fn, pfx##8, sfx), PORT_1(fn, pfx##9, sfx) + +#define PORT_90(fn, pfx, sfx) \ + PORT_10(fn, pfx##1, sfx), PORT_10(fn, pfx##2, sfx), \ + PORT_10(fn, pfx##3, sfx), PORT_10(fn, pfx##4, sfx), \ + PORT_10(fn, pfx##5, sfx), PORT_10(fn, pfx##6, sfx), \ + PORT_10(fn, pfx##7, sfx), PORT_10(fn, pfx##8, sfx), \ + PORT_10(fn, pfx##9, sfx) + +#define _PORT_ALL(pfx, sfx) pfx##_##sfx +#define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA) +#define PORT_ALL(str) CPU_ALL_PORT(_PORT_ALL, PORT, str) +#define GPIO_PORT_ALL() CPU_ALL_PORT(_GPIO_PORT, , unused) +#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK) + /* helper macro for pinmux_enum_t */ #define PORT_DATA_I(nr) \ PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN) -- cgit v1.2.3-70-g09d2 From 9b49139b34a66907662e0be8efe79316dc63f8e0 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 10 Nov 2011 18:45:43 -0800 Subject: ARM: mach-shmobile: move helper macro PORTCR to sh_pfc.h Signed-off-by: Kuninori Morimoto Signed-off-by: Paul Mundt --- arch/arm/mach-shmobile/pfc-sh7367.c | 16 ---------------- arch/arm/mach-shmobile/pfc-sh7372.c | 16 ---------------- arch/arm/mach-shmobile/pfc-sh7377.c | 17 ----------------- arch/arm/mach-shmobile/pfc-sh73a0.c | 12 ------------ include/linux/sh_pfc.h | 17 +++++++++++++++++ 5 files changed, 17 insertions(+), 61 deletions(-) (limited to 'include/linux') diff --git a/arch/arm/mach-shmobile/pfc-sh7367.c b/arch/arm/mach-shmobile/pfc-sh7367.c index 32fbf0206b3..e6e524654e6 100644 --- a/arch/arm/mach-shmobile/pfc-sh7367.c +++ b/arch/arm/mach-shmobile/pfc-sh7367.c @@ -1287,22 +1287,6 @@ static struct pinmux_gpio pinmux_gpios[] = { GPIO_FN(DIVLOCK), }; -/* helper for top 4 bits in PORTnCR */ -#define PCRH(in, in_pd, in_pu, out) \ - 0, (out), (in), 0, \ - 0, 0, 0, 0, \ - 0, 0, (in_pd), 0, \ - 0, 0, (in_pu), 0 - -#define PORTCR(nr, reg) \ - { PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \ - PCRH(PORT##nr##_IN, PORT##nr##_IN_PD, \ - PORT##nr##_IN_PU, PORT##nr##_OUT), \ - PORT##nr##_FN0, PORT##nr##_FN1, PORT##nr##_FN2, \ - PORT##nr##_FN3, PORT##nr##_FN4, PORT##nr##_FN5, \ - PORT##nr##_FN6, PORT##nr##_FN7 } \ - } - static struct pinmux_cfg_reg pinmux_config_regs[] = { PORTCR(0, 0xe6050000), /* PORT0CR */ PORTCR(1, 0xe6050001), /* PORT1CR */ diff --git a/arch/arm/mach-shmobile/pfc-sh7372.c b/arch/arm/mach-shmobile/pfc-sh7372.c index 4b43626598c..1bd6585a6ac 100644 --- a/arch/arm/mach-shmobile/pfc-sh7372.c +++ b/arch/arm/mach-shmobile/pfc-sh7372.c @@ -1199,22 +1199,6 @@ static struct pinmux_gpio pinmux_gpios[] = { GPIO_FN(SDENC_DV_CLKI), }; -/* helper for top 4 bits in PORTnCR */ -#define PCRH(in, in_pd, in_pu, out) \ - 0, (out), (in), 0, \ - 0, 0, 0, 0, \ - 0, 0, (in_pd), 0, \ - 0, 0, (in_pu), 0 - -#define PORTCR(nr, reg) \ - { PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \ - PCRH(PORT##nr##_IN, PORT##nr##_IN_PD, \ - PORT##nr##_IN_PU, PORT##nr##_OUT), \ - PORT##nr##_FN0, PORT##nr##_FN1, PORT##nr##_FN2, \ - PORT##nr##_FN3, PORT##nr##_FN4, PORT##nr##_FN5, \ - PORT##nr##_FN6, PORT##nr##_FN7 } \ - } - static struct pinmux_cfg_reg pinmux_config_regs[] = { PORTCR(0, 0xE6051000), /* PORT0CR */ PORTCR(1, 0xE6051001), /* PORT1CR */ diff --git a/arch/arm/mach-shmobile/pfc-sh7377.c b/arch/arm/mach-shmobile/pfc-sh7377.c index fb3cfd3cff4..2f10511946a 100644 --- a/arch/arm/mach-shmobile/pfc-sh7377.c +++ b/arch/arm/mach-shmobile/pfc-sh7377.c @@ -1300,23 +1300,6 @@ static struct pinmux_gpio pinmux_gpios[] = { GPIO_FN(RESETOUTS), }; -/* helper for top 4 bits in PORTnCR */ -#define PCRH(in, in_pd, in_pu, out) \ - 0, (out), (in), 0, \ - 0, 0, 0, 0, \ - 0, 0, (in_pd), 0, \ - 0, 0, (in_pu), 0 - -#define PORTCR(nr, reg) \ - { PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \ - PCRH(PORT##nr##_IN, PORT##nr##_IN_PD, \ - PORT##nr##_IN_PU, PORT##nr##_OUT), \ - PORT##nr##_FN0, PORT##nr##_FN1, \ - PORT##nr##_FN2, PORT##nr##_FN3, \ - PORT##nr##_FN4, PORT##nr##_FN5, \ - PORT##nr##_FN6, PORT##nr##_FN7 } \ - } - static struct pinmux_cfg_reg pinmux_config_regs[] = { PORTCR(0, 0xe6050000), /* PORT0CR */ PORTCR(1, 0xe6050001), /* PORT1CR */ diff --git a/arch/arm/mach-shmobile/pfc-sh73a0.c b/arch/arm/mach-shmobile/pfc-sh73a0.c index a1ea11956b1..e05634ce2e0 100644 --- a/arch/arm/mach-shmobile/pfc-sh73a0.c +++ b/arch/arm/mach-shmobile/pfc-sh73a0.c @@ -2221,18 +2221,6 @@ static struct pinmux_gpio pinmux_gpios[] = { GPIO_FN(FSIAISLD_PU), }; -#define PORTCR(nr, reg) \ - { PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \ - 0, \ - /*0001*/ PORT##nr##_OUT , \ - /*0010*/ PORT##nr##_IN , 0, 0, 0, 0, 0, 0, 0, \ - /*1010*/ PORT##nr##_IN_PD, 0, 0, 0, \ - /*1110*/ PORT##nr##_IN_PU, 0, \ - PORT##nr##_FN0, PORT##nr##_FN1, PORT##nr##_FN2, \ - PORT##nr##_FN3, PORT##nr##_FN4, PORT##nr##_FN5, \ - PORT##nr##_FN6, PORT##nr##_FN7, 0, 0, 0, 0, 0, 0, 0, 0 } \ - } - static struct pinmux_cfg_reg pinmux_config_regs[] = { PORTCR(0, 0xe6050000), /* PORT0CR */ PORTCR(1, 0xe6050001), /* PORT1CR */ diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index 5f6322ac63e..8446789216e 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -162,5 +162,22 @@ int unregister_pinmux(struct pinmux_info *pip); PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \ PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU) +/* helper macro for top 4 bits in PORTnCR */ +#define _PCRH(in, in_pd, in_pu, out) \ + 0, (out), (in), 0, \ + 0, 0, 0, 0, \ + 0, 0, (in_pd), 0, \ + 0, 0, (in_pu), 0 + +#define PORTCR(nr, reg) \ + { \ + PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \ + _PCRH(PORT##nr##_IN, PORT##nr##_IN_PD, \ + PORT##nr##_IN_PU, PORT##nr##_OUT), \ + PORT##nr##_FN0, PORT##nr##_FN1, \ + PORT##nr##_FN2, PORT##nr##_FN3, \ + PORT##nr##_FN4, PORT##nr##_FN5, \ + PORT##nr##_FN6, PORT##nr##_FN7 } \ + } #endif /* __SH_PFC_H */ -- cgit v1.2.3-70-g09d2 From 224736d9113ab4a7cf3f05c05377492bd99b4b02 Mon Sep 17 00:00:00 2001 From: Stratos Psomadakis Date: Thu, 10 Nov 2011 15:45:37 +0200 Subject: libceph: Allocate larger oid buffer in request msgs ceph_osd_request struct allocates a 40-byte buffer for object names. RBD image names can be up to 96 chars long (100 with the .rbd suffix), which results in the object name for the image being truncated, and a subsequent map failure. Increase the oid buffer in request messages, in order to avoid the truncation. Signed-off-by: Stratos Psomadakis Signed-off-by: Sage Weil --- include/linux/ceph/osd_client.h | 8 +++++++- net/ceph/osd_client.c | 2 +- 2 files changed, 8 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index f88eacb111d..7c05ac202d9 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -10,6 +10,12 @@ #include "osdmap.h" #include "messenger.h" +/* + * Maximum object name size + * (must be at least as big as RBD_MAX_MD_NAME_LEN -- currently 100) + */ +#define MAX_OBJ_NAME_SIZE 100 + struct ceph_msg; struct ceph_snap_context; struct ceph_osd_request; @@ -75,7 +81,7 @@ struct ceph_osd_request { struct inode *r_inode; /* for use by callbacks */ void *r_priv; /* ditto */ - char r_oid[40]; /* object name */ + char r_oid[MAX_OBJ_NAME_SIZE]; /* object name */ int r_oid_len; unsigned long r_stamp; /* send OR check time */ diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 733e46008b8..f4f3f58f523 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -244,7 +244,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, ceph_pagelist_init(req->r_trail); } /* create request message; allow space for oid */ - msg_size += 40; + msg_size += MAX_OBJ_NAME_SIZE; if (snapc) msg_size += sizeof(u64) * snapc->num_snaps; if (use_mempool) -- cgit v1.2.3-70-g09d2 From 06236ac3726f15124839cf16a9e2730a852dad9b Mon Sep 17 00:00:00 2001 From: Maciej Żenczykowski Date: Mon, 7 Nov 2011 14:23:11 +0000 Subject: net-netlink: Add a new attribute to expose TCLASS values via netlink MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit 3ceca749668a52bd795585e0f71c6f0b04814f7b added a TOS attribute. Unfortunately TOS and TCLASS are both present in a dual-stack v6 socket, furthermore they can have different values. As such one cannot in a sane way expose both through a single attribute. Signed-off-by: Maciej Żenczyowski CC: Murali Raja CC: Stephen Hemminger CC: Eric Dumazet CC: David S. Miller Signed-off-by: David S. Miller --- include/linux/inet_diag.h | 3 ++- net/ipv4/inet_diag.c | 4 ++-- 2 files changed, 4 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h index 80b480c9753..abf5028db98 100644 --- a/include/linux/inet_diag.h +++ b/include/linux/inet_diag.h @@ -98,9 +98,10 @@ enum { INET_DIAG_VEGASINFO, INET_DIAG_CONG, INET_DIAG_TOS, + INET_DIAG_TCLASS, }; -#define INET_DIAG_MAX INET_DIAG_TOS +#define INET_DIAG_MAX INET_DIAG_TCLASS /* INET_DIAG_MEM */ diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index f5e2bdaef94..68e8ac51438 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -133,8 +133,8 @@ static int inet_csk_diag_fill(struct sock *sk, &np->rcv_saddr); ipv6_addr_copy((struct in6_addr *)r->id.idiag_dst, &np->daddr); - if (ext & (1 << (INET_DIAG_TOS - 1))) - RTA_PUT_U8(skb, INET_DIAG_TOS, np->tclass); + if (ext & (1 << (INET_DIAG_TCLASS - 1))) + RTA_PUT_U8(skb, INET_DIAG_TCLASS, np->tclass); } #endif -- cgit v1.2.3-70-g09d2 From f1c6f1a7eed963ed233ba4c8b6fa8addb86c6ddc Mon Sep 17 00:00:00 2001 From: Carsten Emde Date: Wed, 26 Oct 2011 23:14:16 +0200 Subject: sched: Set the command name of the idle tasks in SMP kernels In UP systems, the idle task is initialized using the init_task structure from which the command name is taken (currently "swapper"). In SMP systems, one idle task per CPU is forked by the worker thread from which the task structure is copied. The command name is, therefore, "kworker/0:0" or "kworker/0:1", if not updated. Since such update was lacking, all idle tasks in SMP systems were incorrectly named. This longtime bug was not discovered immediately, because there is no /proc/0 entry - the bug only becomes apparent when tracing is enabled. This patch sets the command name of the idle tasks in SMP systems to the name that is used in the INIT_TASK structure suffixed by a slash and the number of the CPU. Signed-off-by: Carsten Emde Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20111026211708.768925506@osadl.org Signed-off-by: Ingo Molnar --- include/linux/init_task.h | 4 +++- kernel/sched.c | 4 ++++ 2 files changed, 7 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 08ffab01e76..b6e5b8b000e 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -126,6 +126,8 @@ extern struct cred init_cred; # define INIT_PERF_EVENTS(tsk) #endif +#define INIT_TASK_COMM "swapper" + /* * INIT_TASK is used to set up the first task table, touch at * your own risk!. Base=0, limit=0x1fffff (=2MB) @@ -162,7 +164,7 @@ extern struct cred init_cred; .group_leader = &tsk, \ RCU_INIT_POINTER(.real_cred, &init_cred), \ RCU_INIT_POINTER(.cred, &init_cred), \ - .comm = "swapper", \ + .comm = INIT_TASK_COMM, \ .thread = INIT_THREAD, \ .fs = &init_fs, \ .files = &init_files, \ diff --git a/kernel/sched.c b/kernel/sched.c index 3d2c436959a..d6b149ccf92 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -71,6 +71,7 @@ #include #include #include +#include #include #include @@ -6112,6 +6113,9 @@ void __cpuinit init_idle(struct task_struct *idle, int cpu) */ idle->sched_class = &idle_sched_class; ftrace_graph_init_idle_task(idle, cpu); +#if defined(CONFIG_SMP) + sprintf(idle->comm, "%s/%d", INIT_TASK_COMM, cpu); +#endif } /* -- cgit v1.2.3-70-g09d2 From 7b08fae8fbf0c14f003be8e039ed37bcbae4415a Mon Sep 17 00:00:00 2001 From: Marcos Paulo de Souza Date: Tue, 1 Nov 2011 11:15:40 -0700 Subject: device.h: Fix struct member documentation Fix warning of make xmldocs of documention of the struct member iommu_ops from struct bus_type. Signed-off-by: Marcos Paulo de Souza Acked-by: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- include/linux/device.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/device.h b/include/linux/device.h index ffbcf95cd97..2b883206089 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -69,7 +69,7 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *); * @resume: Called to bring a device on this bus out of sleep mode. * @pm: Power management operations of this bus, callback the specific * device driver's pm-ops. - * @iommu_ops IOMMU specific operations for this bus, used to attach IOMMU + * @iommu_ops: IOMMU specific operations for this bus, used to attach IOMMU * driver implementations to a bus and allow the driver to do * bus-specific setup * @p: The private data of the driver core, only the driver core can -- cgit v1.2.3-70-g09d2 From 93f3350c46fa5dfcc9650eb19b186e71ffc924c3 Mon Sep 17 00:00:00 2001 From: Claudio Scordino Date: Wed, 9 Nov 2011 15:51:49 +0100 Subject: RS485: fix inconsistencies in the meaning of some variables The crisv10.c and the atmel_serial.c serial drivers intepret the fields of the serial_rs485 structure in a different way. In particular, crisv10.c uses SER_RS485_RTS_AFTER_SEND and SER_RS485_RTS_ON_SEND for the voltage of the RTS pin; atmel_serial.c, instead, uses these values to know if a delay must be set before and after sending. This patch makes the usage of these variables consistent across all drivers and fixes the Documentation as well. From now on, SER_RS485_RTS_AFTER_SEND and SER_RS485_RTS_ON_SEND will be used to set the voltage of the RTS pin (as in the crisv10.c driver); the delay will be understood by looking only at the value of delay_rts_before_send and delay_rts_after_send. Signed-off-by: Claudio Scordino Signed-off-by: Darron Black Acked-by: Jesper Nilsson Acked-by: Nicolas Ferre Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- Documentation/serial/serial-rs485.txt | 14 +++++++++++--- drivers/tty/serial/atmel_serial.c | 16 +++------------- drivers/tty/serial/crisv10.c | 10 ++-------- include/linux/serial.h | 14 ++++++++------ 4 files changed, 24 insertions(+), 30 deletions(-) (limited to 'include/linux') diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt index 079cb3df62c..41c8378c0b2 100644 --- a/Documentation/serial/serial-rs485.txt +++ b/Documentation/serial/serial-rs485.txt @@ -97,15 +97,23 @@ struct serial_rs485 rs485conf; - /* Set RS485 mode: */ + /* Enable RS485 mode: */ rs485conf.flags |= SER_RS485_ENABLED; + /* Set logical level for RTS pin equal to 1 when sending: */ + rs485conf.flags |= SER_RS485_RTS_ON_SEND; + /* or, set logical level for RTS pin equal to 0 when sending: */ + rs485conf.flags &= ~(SER_RS485_RTS_ON_SEND); + + /* Set logical level for RTS pin equal to 1 after sending: */ + rs485conf.flags |= SER_RS485_RTS_AFTER_SEND; + /* or, set logical level for RTS pin equal to 0 after sending: */ + rs485conf.flags &= ~(SER_RS485_RTS_AFTER_SEND); + /* Set rts delay before send, if needed: */ - rs485conf.flags |= SER_RS485_RTS_BEFORE_SEND; rs485conf.delay_rts_before_send = ...; /* Set rts delay after send, if needed: */ - rs485conf.flags |= SER_RS485_RTS_AFTER_SEND; rs485conf.delay_rts_after_send = ...; /* Set this flag if you want to receive data even whilst sending data */ diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 4a0f86fa1e9..4c823f341d9 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -228,7 +228,7 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf) if (rs485conf->flags & SER_RS485_ENABLED) { dev_dbg(port->dev, "Setting UART to RS485\n"); atmel_port->tx_done_mask = ATMEL_US_TXEMPTY; - if (rs485conf->flags & SER_RS485_RTS_AFTER_SEND) + if ((rs485conf->delay_rts_after_send) > 0) UART_PUT_TTGR(port, rs485conf->delay_rts_after_send); mode |= ATMEL_US_USMODE_RS485; } else { @@ -304,7 +304,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl) if (atmel_port->rs485.flags & SER_RS485_ENABLED) { dev_dbg(port->dev, "Setting UART to RS485\n"); - if (atmel_port->rs485.flags & SER_RS485_RTS_AFTER_SEND) + if ((atmel_port->rs485.delay_rts_after_send) > 0) UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_after_send); mode |= ATMEL_US_USMODE_RS485; @@ -1228,7 +1228,7 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios, if (atmel_port->rs485.flags & SER_RS485_ENABLED) { dev_dbg(port->dev, "Setting UART to RS485\n"); - if (atmel_port->rs485.flags & SER_RS485_RTS_AFTER_SEND) + if ((atmel_port->rs485.delay_rts_after_send) > 0) UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_after_send); mode |= ATMEL_US_USMODE_RS485; @@ -1447,16 +1447,6 @@ static void __devinit atmel_of_init_port(struct atmel_uart_port *atmel_port, rs485conf->delay_rts_after_send = rs485_delay[1]; rs485conf->flags = 0; - if (rs485conf->delay_rts_before_send == 0 && - rs485conf->delay_rts_after_send == 0) { - rs485conf->flags |= SER_RS485_RTS_ON_SEND; - } else { - if (rs485conf->delay_rts_before_send) - rs485conf->flags |= SER_RS485_RTS_BEFORE_SEND; - if (rs485conf->delay_rts_after_send) - rs485conf->flags |= SER_RS485_RTS_AFTER_SEND; - } - if (of_get_property(np, "rs485-rx-during-tx", NULL)) rs485conf->flags |= SER_RS485_RX_DURING_TX; diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c index b7435043f2f..1dfba7b779c 100644 --- a/drivers/tty/serial/crisv10.c +++ b/drivers/tty/serial/crisv10.c @@ -3234,9 +3234,8 @@ rs_write(struct tty_struct *tty, e100_disable_rx(info); e100_enable_rx_irq(info); #endif - if ((info->rs485.flags & SER_RS485_RTS_BEFORE_SEND) && - (info->rs485.delay_rts_before_send > 0)) - msleep(info->rs485.delay_rts_before_send); + if (info->rs485.delay_rts_before_send > 0) + msleep(info->rs485.delay_rts_before_send); } #endif /* CONFIG_ETRAX_RS485 */ @@ -3693,10 +3692,6 @@ rs_ioctl(struct tty_struct *tty, rs485data.delay_rts_before_send = rs485ctrl.delay_rts_before_send; rs485data.flags = 0; - if (rs485data.delay_rts_before_send != 0) - rs485data.flags |= SER_RS485_RTS_BEFORE_SEND; - else - rs485data.flags &= ~(SER_RS485_RTS_BEFORE_SEND); if (rs485ctrl.enabled) rs485data.flags |= SER_RS485_ENABLED; @@ -4531,7 +4526,6 @@ static int __init rs_init(void) /* Set sane defaults */ info->rs485.flags &= ~(SER_RS485_RTS_ON_SEND); info->rs485.flags |= SER_RS485_RTS_AFTER_SEND; - info->rs485.flags &= ~(SER_RS485_RTS_BEFORE_SEND); info->rs485.delay_rts_before_send = 0; info->rs485.flags &= ~(SER_RS485_ENABLED); #endif diff --git a/include/linux/serial.h b/include/linux/serial.h index 97ff8e27a6c..3d86517fe7d 100644 --- a/include/linux/serial.h +++ b/include/linux/serial.h @@ -207,13 +207,15 @@ struct serial_icounter_struct { struct serial_rs485 { __u32 flags; /* RS485 feature flags */ -#define SER_RS485_ENABLED (1 << 0) -#define SER_RS485_RTS_ON_SEND (1 << 1) -#define SER_RS485_RTS_AFTER_SEND (1 << 2) -#define SER_RS485_RTS_BEFORE_SEND (1 << 3) +#define SER_RS485_ENABLED (1 << 0) /* If enabled */ +#define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for + RTS pin when + sending */ +#define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for + RTS pin after sent*/ #define SER_RS485_RX_DURING_TX (1 << 4) - __u32 delay_rts_before_send; /* Milliseconds */ - __u32 delay_rts_after_send; /* Milliseconds */ + __u32 delay_rts_before_send; /* Delay before send (milliseconds) */ + __u32 delay_rts_after_send; /* Delay after send (milliseconds) */ __u32 padding[5]; /* Memory is cheap, new structs are a royal PITA .. */ }; -- cgit v1.2.3-70-g09d2 From 0c614e2d3e6ee6ff13c6181f380787cea1d82d1d Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Wed, 16 Nov 2011 09:21:48 +0100 Subject: include/linux/bio.h: use a static inline function for bio_integrity_clone() When CONFIG_BLK_DEV_INTEGRITY is not set, we get these warnings: drivers/md/dm.c: In function 'split_bvec': drivers/md/dm.c:1061:3: warning: statement with no effect drivers/md/dm.c: In function 'clone_bio': drivers/md/dm.c:1088:3: warning: statement with no effect Signed-off-by: Stephen Rothwell Signed-off-by: Andrew Morton Signed-off-by: Jens Axboe --- include/linux/bio.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/bio.h b/include/linux/bio.h index a3c071c9e18..d2a3cc23d82 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -519,7 +519,11 @@ extern void bio_integrity_init(void); #define bioset_integrity_create(a, b) (0) #define bio_integrity_prep(a) (0) #define bio_integrity_enabled(a) (0) -#define bio_integrity_clone(a, b, c, d) (0) +static inline int bio_integrity_clone(struct bio *bio, struct bio *bio_src, + gfp_t gfp_mask, struct bio_set *bs) +{ + return 0; +} #define bioset_integrity_free(a) do { } while (0) #define bio_integrity_free(a, b) do { } while (0) #define bio_integrity_endio(a, b) do { } while (0) -- cgit v1.2.3-70-g09d2 From 121f099412bd6576dfb3d94222e89d9341362177 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 16 Nov 2011 09:21:50 +0100 Subject: bio: change some signed vars to unsigned This is just a cleanup patch to silence a static checker warning. The problem is that we cap "nr_iovecs" so it can't be larger than "UIO_MAXIOV" but we don't check for negative values. It turns out this is prevented at other layers, but logically it doesn't make sense to have negative nr_iovecs so making it unsigned is nicer. Signed-off-by: Dan Carpenter Signed-off-by: Andrew Morton Signed-off-by: Jens Axboe --- fs/bio.c | 7 ++++--- include/linux/bio.h | 4 ++-- 2 files changed, 6 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/fs/bio.c b/fs/bio.c index 41c93c72224..b1fe82cf88c 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -337,7 +337,7 @@ static void bio_fs_destructor(struct bio *bio) * RETURNS: * Pointer to new bio on success, NULL on failure. */ -struct bio *bio_alloc(gfp_t gfp_mask, int nr_iovecs) +struct bio *bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs) { struct bio *bio = bio_alloc_bioset(gfp_mask, nr_iovecs, fs_bio_set); @@ -365,7 +365,7 @@ static void bio_kmalloc_destructor(struct bio *bio) * %__GFP_WAIT, the allocation is guaranteed to succeed. * **/ -struct bio *bio_kmalloc(gfp_t gfp_mask, int nr_iovecs) +struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned int nr_iovecs) { struct bio *bio; @@ -696,7 +696,8 @@ static void bio_free_map_data(struct bio_map_data *bmd) kfree(bmd); } -static struct bio_map_data *bio_alloc_map_data(int nr_segs, int iov_count, +static struct bio_map_data *bio_alloc_map_data(int nr_segs, + unsigned int iov_count, gfp_t gfp_mask) { struct bio_map_data *bmd; diff --git a/include/linux/bio.h b/include/linux/bio.h index d2a3cc23d82..847994aef0e 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -211,8 +211,8 @@ extern void bio_pair_release(struct bio_pair *dbio); extern struct bio_set *bioset_create(unsigned int, unsigned int); extern void bioset_free(struct bio_set *); -extern struct bio *bio_alloc(gfp_t, int); -extern struct bio *bio_kmalloc(gfp_t, int); +extern struct bio *bio_alloc(gfp_t, unsigned int); +extern struct bio *bio_kmalloc(gfp_t, unsigned int); extern struct bio *bio_alloc_bioset(gfp_t, int, struct bio_set *); extern void bio_put(struct bio *); extern void bio_free(struct bio *, struct bio_set *); -- cgit v1.2.3-70-g09d2 From cd12909cb576d37311fe35868780e82d5007d0c8 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Thu, 29 Sep 2011 16:53:32 +0100 Subject: xen: map foreign pages for shared rings by updating the PTEs directly When mapping a foreign page with xenbus_map_ring_valloc() with the GNTTABOP_map_grant_ref hypercall, set the GNTMAP_contains_pte flag and pass a pointer to the PTE (in init_mm). After the page is mapped, the usual fault mechanism can be used to update additional MMs. This allows the vmalloc_sync_all() to be removed from alloc_vm_area(). Signed-off-by: David Vrabel Acked-by: Andrew Morton [v1: Squashed fix by Michal for no-mmu case] Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Michal Simek --- arch/x86/xen/grant-table.c | 2 +- drivers/xen/xenbus/xenbus_client.c | 11 ++++++++--- include/linux/vmalloc.h | 2 +- mm/nommu.c | 2 +- mm/vmalloc.c | 27 +++++++++++++-------------- 5 files changed, 24 insertions(+), 20 deletions(-) (limited to 'include/linux') diff --git a/arch/x86/xen/grant-table.c b/arch/x86/xen/grant-table.c index 6bbfd7ac5e8..5a40d24ba33 100644 --- a/arch/x86/xen/grant-table.c +++ b/arch/x86/xen/grant-table.c @@ -71,7 +71,7 @@ int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes, if (shared == NULL) { struct vm_struct *area = - alloc_vm_area(PAGE_SIZE * max_nr_gframes); + alloc_vm_area(PAGE_SIZE * max_nr_gframes, NULL); BUG_ON(area == NULL); shared = area->addr; *__shared = shared; diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c index 81c3ce6b8bb..1906125eab4 100644 --- a/drivers/xen/xenbus/xenbus_client.c +++ b/drivers/xen/xenbus/xenbus_client.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #include @@ -436,19 +437,20 @@ EXPORT_SYMBOL_GPL(xenbus_free_evtchn); int xenbus_map_ring_valloc(struct xenbus_device *dev, int gnt_ref, void **vaddr) { struct gnttab_map_grant_ref op = { - .flags = GNTMAP_host_map, + .flags = GNTMAP_host_map | GNTMAP_contains_pte, .ref = gnt_ref, .dom = dev->otherend_id, }; struct vm_struct *area; + pte_t *pte; *vaddr = NULL; - area = alloc_vm_area(PAGE_SIZE); + area = alloc_vm_area(PAGE_SIZE, &pte); if (!area) return -ENOMEM; - op.host_addr = (unsigned long)area->addr; + op.host_addr = arbitrary_virt_to_machine(pte).maddr; if (HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, &op, 1)) BUG(); @@ -527,6 +529,7 @@ int xenbus_unmap_ring_vfree(struct xenbus_device *dev, void *vaddr) struct gnttab_unmap_grant_ref op = { .host_addr = (unsigned long)vaddr, }; + unsigned int level; /* It'd be nice if linux/vmalloc.h provided a find_vm_area(void *addr) * method so that we don't have to muck with vmalloc internals here. @@ -548,6 +551,8 @@ int xenbus_unmap_ring_vfree(struct xenbus_device *dev, void *vaddr) } op.handle = (grant_handle_t)area->phys_addr; + op.host_addr = arbitrary_virt_to_machine( + lookup_address((unsigned long)vaddr, &level)).maddr; if (HYPERVISOR_grant_table_op(GNTTABOP_unmap_grant_ref, &op, 1)) BUG(); diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 687fb11e201..4bde182fcf9 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -119,7 +119,7 @@ unmap_kernel_range(unsigned long addr, unsigned long size) #endif /* Allocate/destroy a 'vmalloc' VM area. */ -extern struct vm_struct *alloc_vm_area(size_t size); +extern struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes); extern void free_vm_area(struct vm_struct *area); /* for /dev/kmem */ diff --git a/mm/nommu.c b/mm/nommu.c index 73419c55eda..b982290fd96 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -454,7 +454,7 @@ void __attribute__((weak)) vmalloc_sync_all(void) * between processes, it syncs the pagetable across all * processes. */ -struct vm_struct *alloc_vm_area(size_t size) +struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes) { BUG(); return NULL; diff --git a/mm/vmalloc.c b/mm/vmalloc.c index b669aa6f6ca..3231bf33287 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2141,23 +2141,30 @@ void __attribute__((weak)) vmalloc_sync_all(void) static int f(pte_t *pte, pgtable_t table, unsigned long addr, void *data) { - /* apply_to_page_range() does all the hard work. */ + pte_t ***p = data; + + if (p) { + *(*p) = pte; + (*p)++; + } return 0; } /** * alloc_vm_area - allocate a range of kernel address space * @size: size of the area + * @ptes: returns the PTEs for the address space * * Returns: NULL on failure, vm_struct on success * * This function reserves a range of kernel address space, and * allocates pagetables to map that range. No actual mappings - * are created. If the kernel address space is not shared - * between processes, it syncs the pagetable across all - * processes. + * are created. + * + * If @ptes is non-NULL, pointers to the PTEs (in init_mm) + * allocated for the VM area are returned. */ -struct vm_struct *alloc_vm_area(size_t size) +struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes) { struct vm_struct *area; @@ -2171,19 +2178,11 @@ struct vm_struct *alloc_vm_area(size_t size) * of kernel virtual address space and mapped into init_mm. */ if (apply_to_page_range(&init_mm, (unsigned long)area->addr, - area->size, f, NULL)) { + size, f, ptes ? &ptes : NULL)) { free_vm_area(area); return NULL; } - /* - * If the allocated address space is passed to a hypercall - * before being used then we cannot rely on a page fault to - * trigger an update of the page tables. So sync all the page - * tables here. - */ - vmalloc_sync_all(); - return area; } EXPORT_SYMBOL_GPL(alloc_vm_area); -- cgit v1.2.3-70-g09d2 From ea441d1104cf1efb471fa81bc91e9fd1e6ae29fd Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 16 Nov 2011 21:43:59 -0500 Subject: new helper: mount_subtree() takes vfsmount and relative path, does lookup within that vfsmount (possibly triggering automounts) and returns the result as root of subtree suitable for return by ->mount() (i.e. a reference to dentry and an active reference to its superblock grabbed, superblock locked exclusive). btrfs and nfs switched to it instead of open-coding the sucker. Signed-off-by: Al Viro --- fs/btrfs/super.c | 35 ++++++----------------------------- fs/namespace.c | 28 ++++++++++++++++++++++++++++ fs/nfs/super.c | 30 ++++++------------------------ include/linux/fs.h | 1 + 4 files changed, 41 insertions(+), 53 deletions(-) (limited to 'include/linux') diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index cfbedd7755b..17ee7fc5e64 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -825,13 +825,9 @@ static char *setup_root_args(char *args) static struct dentry *mount_subvol(const char *subvol_name, int flags, const char *device_name, char *data) { - struct super_block *s; struct dentry *root; struct vfsmount *mnt; - struct mnt_namespace *ns_private; char *newargs; - struct path path; - int error; newargs = setup_root_args(data); if (!newargs) @@ -842,36 +838,17 @@ static struct dentry *mount_subvol(const char *subvol_name, int flags, if (IS_ERR(mnt)) return ERR_CAST(mnt); - ns_private = create_mnt_ns(mnt); - if (IS_ERR(ns_private)) - return ERR_CAST(ns_private); - - /* - * This will trigger the automount of the subvol so we can just - * drop the mnt we have here and return the dentry that we - * found. - */ - error = vfs_path_lookup(mnt->mnt_root, mnt, subvol_name, - LOOKUP_FOLLOW, &path); - put_mnt_ns(ns_private); - if (error) - return ERR_PTR(error); + root = mount_subtree(mnt, subvol_name); - if (!is_subvolume_inode(path.dentry->d_inode)) { - path_put(&path); - error = -EINVAL; + if (!IS_ERR(root) && !is_subvolume_inode(root->d_inode)) { + struct super_block *s = root->d_sb; + dput(root); + root = ERR_PTR(-EINVAL); + deactivate_locked_super(s); printk(KERN_ERR "btrfs: '%s' is not a valid subvolume\n", subvol_name); - return ERR_PTR(-EINVAL); } - /* Get a ref to the sb and the dentry we found and return it */ - s = path.mnt->mnt_sb; - atomic_inc(&s->s_active); - root = dget(path.dentry); - path_put(&path); - down_write(&s->s_umount); - return root; } diff --git a/fs/namespace.c b/fs/namespace.c index aea4b768984..50ee30345b4 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2490,6 +2490,34 @@ struct mnt_namespace *create_mnt_ns(struct vfsmount *mnt) } EXPORT_SYMBOL(create_mnt_ns); +struct dentry *mount_subtree(struct vfsmount *mnt, const char *name) +{ + struct mnt_namespace *ns; + struct path path; + int err; + + ns = create_mnt_ns(mnt); + if (IS_ERR(ns)) + return ERR_CAST(ns); + + err = vfs_path_lookup(mnt->mnt_root, mnt, + name, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, &path); + + put_mnt_ns(ns); + + if (err) + return ERR_PTR(err); + + /* trade a vfsmount reference for active sb one */ + atomic_inc(&path.mnt->mnt_sb->s_active); + mntput(path.mnt); + /* lock the sucker */ + down_write(&path.mnt->mnt_sb->s_umount); + /* ... and return the root of (sub)tree on it */ + return path.dentry; +} +EXPORT_SYMBOL(mount_subtree); + SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name, char __user *, type, unsigned long, flags, void __user *, data) { diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 46d69f38fd5..134777406ee 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2787,35 +2787,17 @@ static void nfs_referral_loop_unprotect(void) static struct dentry *nfs_follow_remote_path(struct vfsmount *root_mnt, const char *export_path) { - struct mnt_namespace *ns_private; - struct super_block *s; struct dentry *dentry; - struct path path; - int ret; + int ret = nfs_referral_loop_protect(); - ns_private = create_mnt_ns(root_mnt); - if (IS_ERR(ns_private)) - return ERR_CAST(ns_private); - - ret = nfs_referral_loop_protect(); - if (ret == 0) { - ret = vfs_path_lookup(root_mnt->mnt_root, root_mnt, - export_path, LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT, - &path); - nfs_referral_loop_unprotect(); - } - - put_mnt_ns(ns_private); - - if (ret != 0) + if (ret) { + mntput(root_mnt); return ERR_PTR(ret); + } - s = path.mnt->mnt_sb; - atomic_inc(&s->s_active); - dentry = dget(path.dentry); + dentry = mount_subtree(root_mnt, export_path); + nfs_referral_loop_unprotect(); - path_put(&path); - down_write(&s->s_umount); return dentry; } diff --git a/include/linux/fs.h b/include/linux/fs.h index 0c4df261af7..e3130220ce3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1886,6 +1886,7 @@ extern struct dentry *mount_single(struct file_system_type *fs_type, extern struct dentry *mount_nodev(struct file_system_type *fs_type, int flags, void *data, int (*fill_super)(struct super_block *, void *, int)); +extern struct dentry *mount_subtree(struct vfsmount *mnt, const char *path); void generic_shutdown_super(struct super_block *sb); void kill_block_super(struct super_block *sb); void kill_anon_super(struct super_block *sb); -- cgit v1.2.3-70-g09d2 From 468e6a20afaccb67e2a7d7f60d301f90e1c6f301 Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Wed, 7 Sep 2011 10:41:32 -0600 Subject: writeback: remove vm_dirties and task->dirties They are not used any more. Signed-off-by: Wu Fengguang --- include/linux/init_task.h | 1 - include/linux/sched.h | 1 - kernel/fork.c | 5 ----- mm/page-writeback.c | 9 --------- 4 files changed, 16 deletions(-) (limited to 'include/linux') diff --git a/include/linux/init_task.h b/include/linux/init_task.h index 08ffab01e76..94b1e356c02 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -184,7 +184,6 @@ extern struct cred init_cred; [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ }, \ .thread_group = LIST_HEAD_INIT(tsk.thread_group), \ - .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \ INIT_IDS \ INIT_PERF_EVENTS(tsk) \ INIT_TRACE_IRQFLAGS \ diff --git a/include/linux/sched.h b/include/linux/sched.h index 68daf4f27e2..1c4f3e9b9bc 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1521,7 +1521,6 @@ struct task_struct { #ifdef CONFIG_FAULT_INJECTION int make_it_fail; #endif - struct prop_local_single dirties; /* * when (nr_dirtied >= nr_dirtied_pause), it's time to call * balance_dirty_pages() for some dirty throttling pause diff --git a/kernel/fork.c b/kernel/fork.c index ba0d1726132..da4a6a10d08 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -162,7 +162,6 @@ static void account_kernel_stack(struct thread_info *ti, int account) void free_task(struct task_struct *tsk) { - prop_local_destroy_single(&tsk->dirties); account_kernel_stack(tsk->stack, -1); free_thread_info(tsk->stack); rt_mutex_debug_task_free(tsk); @@ -274,10 +273,6 @@ static struct task_struct *dup_task_struct(struct task_struct *orig) tsk->stack = ti; - err = prop_local_init_single(&tsk->dirties); - if (err) - goto out; - setup_thread_stack(tsk, orig); clear_user_return_notifier(tsk); clear_tsk_need_resched(tsk); diff --git a/mm/page-writeback.c b/mm/page-writeback.c index e7cb5ff6e53..71252486bc6 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -128,7 +128,6 @@ unsigned long global_dirty_limit; * */ static struct prop_descriptor vm_completions; -static struct prop_descriptor vm_dirties; /* * couple the period to the dirty_ratio: @@ -154,7 +153,6 @@ static void update_completion_period(void) { int shift = calc_period_shift(); prop_change_shift(&vm_completions, shift); - prop_change_shift(&vm_dirties, shift); writeback_set_ratelimit(); } @@ -235,11 +233,6 @@ void bdi_writeout_inc(struct backing_dev_info *bdi) } EXPORT_SYMBOL_GPL(bdi_writeout_inc); -void task_dirty_inc(struct task_struct *tsk) -{ - prop_inc_single(&vm_dirties, &tsk->dirties); -} - /* * Obtain an accurate fraction of the BDI's portion. */ @@ -1395,7 +1388,6 @@ void __init page_writeback_init(void) shift = calc_period_shift(); prop_descriptor_init(&vm_completions, shift); - prop_descriptor_init(&vm_dirties, shift); } /** @@ -1724,7 +1716,6 @@ void account_page_dirtied(struct page *page, struct address_space *mapping) __inc_zone_page_state(page, NR_DIRTIED); __inc_bdi_stat(mapping->backing_dev_info, BDI_RECLAIMABLE); __inc_bdi_stat(mapping->backing_dev_info, BDI_DIRTIED); - task_dirty_inc(current); task_io_account_write(PAGE_CACHE_SIZE); } } -- cgit v1.2.3-70-g09d2 From bb75c627fb0dfb8c0ab75d3033709ff928896e16 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 17 Nov 2011 15:26:35 +0100 Subject: Revert "KVM: PPC: Add support for explicit HIOR setting" This reverts commit a15bd354f083f20f257db450488db52ac27df439. It exceeded the padding on the SREGS struct, rendering the ABI backwards-incompatible. Conflicts: arch/powerpc/kvm/powerpc.c include/linux/kvm.h Signed-off-by: Avi Kivity --- arch/powerpc/include/asm/kvm.h | 8 -------- arch/powerpc/include/asm/kvm_book3s.h | 2 -- arch/powerpc/kvm/book3s_pr.c | 14 ++------------ arch/powerpc/kvm/powerpc.c | 1 - include/linux/kvm.h | 1 - 5 files changed, 2 insertions(+), 24 deletions(-) (limited to 'include/linux') diff --git a/arch/powerpc/include/asm/kvm.h b/arch/powerpc/include/asm/kvm.h index 08fe69edcd1..0ad432bc81d 100644 --- a/arch/powerpc/include/asm/kvm.h +++ b/arch/powerpc/include/asm/kvm.h @@ -148,12 +148,6 @@ struct kvm_regs { #define KVM_SREGS_E_UPDATE_DEC (1 << 2) #define KVM_SREGS_E_UPDATE_DBSR (1 << 3) -/* - * Book3S special bits to indicate contents in the struct by maintaining - * backwards compatibility with older structs. If adding a new field, - * please make sure to add a flag for that new field */ -#define KVM_SREGS_S_HIOR (1 << 0) - /* * In KVM_SET_SREGS, reserved/pad fields must be left untouched from a * previous KVM_GET_REGS. @@ -179,8 +173,6 @@ struct kvm_sregs { __u64 ibat[8]; __u64 dbat[8]; } ppc32; - __u64 flags; /* KVM_SREGS_S_ */ - __u64 hior; } s; struct { union { diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index a384ffdf33d..d4df013ad77 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -90,8 +90,6 @@ struct kvmppc_vcpu_book3s { #endif int context_id[SID_CONTEXTS]; - bool hior_sregs; /* HIOR is set by SREGS, not PVR */ - struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE]; struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG]; struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE]; diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index bc4d50dec78..3c791e1eb67 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -151,16 +151,14 @@ void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr) #ifdef CONFIG_PPC_BOOK3S_64 if ((pvr >= 0x330000) && (pvr < 0x70330000)) { kvmppc_mmu_book3s_64_init(vcpu); - if (!to_book3s(vcpu)->hior_sregs) - to_book3s(vcpu)->hior = 0xfff00000; + to_book3s(vcpu)->hior = 0xfff00000; to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL; vcpu->arch.cpu_type = KVM_CPU_3S_64; } else #endif { kvmppc_mmu_book3s_32_init(vcpu); - if (!to_book3s(vcpu)->hior_sregs) - to_book3s(vcpu)->hior = 0; + to_book3s(vcpu)->hior = 0; to_book3s(vcpu)->msr_mask = 0xffffffffULL; vcpu->arch.cpu_type = KVM_CPU_3S_32; } @@ -797,9 +795,6 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, } } - if (sregs->u.s.flags & KVM_SREGS_S_HIOR) - sregs->u.s.hior = to_book3s(vcpu)->hior; - return 0; } @@ -836,11 +831,6 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, /* Flush the MMU after messing with the segments */ kvmppc_mmu_pte_flush(vcpu, 0, 0); - if (sregs->u.s.flags & KVM_SREGS_S_HIOR) { - to_book3s(vcpu)->hior_sregs = true; - to_book3s(vcpu)->hior = sregs->u.s.hior; - } - return 0; } diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index efbf9ad8720..607fbdf24b8 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -208,7 +208,6 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_PPC_BOOKE_SREGS: #else case KVM_CAP_PPC_SEGSTATE: - case KVM_CAP_PPC_HIOR: case KVM_CAP_PPC_PAPR: #endif case KVM_CAP_PPC_UNSET_IRQ: diff --git a/include/linux/kvm.h b/include/linux/kvm.h index f47fcd30273..c3892fc1d53 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -555,7 +555,6 @@ struct kvm_ppc_pvinfo { #define KVM_CAP_PPC_SMT 64 #define KVM_CAP_PPC_RMA 65 #define KVM_CAP_MAX_VCPUS 66 /* returns max vcpus per vm */ -#define KVM_CAP_PPC_HIOR 67 #define KVM_CAP_PPC_PAPR 68 #define KVM_CAP_S390_GMAP 71 -- cgit v1.2.3-70-g09d2 From 8b258cc8ac229aa7d5dcb7cc34cb35d9124498ac Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 17 Nov 2011 21:39:33 +0100 Subject: PM Sleep: Do not extend wakeup paths to devices with ignore_children set Commit 4ca46ff3e0d8c234cb40ebb6457653b59584426c (PM / Sleep: Mark devices involved in wakeup signaling during suspend) introduced the power.wakeup_path field in struct dev_pm_info to mark devices whose children are enabled to wake up the system from sleep states, so that power domains containing the parents that provide their children with wakeup power and/or relay their wakeup signals are not turned off. Unfortunately, that introduced a PM regression on SH7372 whose power consumption in the system "memory sleep" state increased as a result of it, because it prevented the power domain containing the I2C controller from being turned off when some children of that controller were enabled to wake up the system, although the controller was not necessary for them to signal wakeup. To fix this issue use the observation that devices whose power.ignore_children flag is set for runtime PM should be treated analogously during system suspend. Namely, they shouldn't be included in wakeup paths going through their children. Since the SH7372 I2C controller's power.ignore_children flag is set, doing so will restore the previous behavior of that SOC. Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman --- drivers/base/power/main.c | 3 ++- include/linux/device.h | 5 +++++ include/linux/pm.h | 2 +- include/linux/pm_runtime.h | 6 ------ 4 files changed, 8 insertions(+), 8 deletions(-) (limited to 'include/linux') diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 7fa098464da..c3d2dfcf438 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -920,7 +920,8 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async) End: if (!error) { dev->power.is_suspended = true; - if (dev->power.wakeup_path && dev->parent) + if (dev->power.wakeup_path + && dev->parent && !dev->parent->power.ignore_children) dev->parent->power.wakeup_path = true; } diff --git a/include/linux/device.h b/include/linux/device.h index ffbcf95cd97..52b3a4111df 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -682,6 +682,11 @@ static inline bool device_async_suspend_enabled(struct device *dev) return !!dev->power.async_suspend; } +static inline void pm_suspend_ignore_children(struct device *dev, bool enable) +{ + dev->power.ignore_children = enable; +} + static inline void device_lock(struct device *dev) { mutex_lock(&dev->mutex); diff --git a/include/linux/pm.h b/include/linux/pm.h index f15acb64681..5c4c8b18c8b 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -447,6 +447,7 @@ struct dev_pm_info { unsigned int async_suspend:1; bool is_prepared:1; /* Owned by the PM core */ bool is_suspended:1; /* Ditto */ + bool ignore_children:1; spinlock_t lock; #ifdef CONFIG_PM_SLEEP struct list_head entry; @@ -464,7 +465,6 @@ struct dev_pm_info { atomic_t usage_count; atomic_t child_count; unsigned int disable_depth:3; - unsigned int ignore_children:1; unsigned int idle_notification:1; unsigned int request_pending:1; unsigned int deferred_resume:1; diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index d8d90361964..d3085e72a0e 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -52,11 +52,6 @@ static inline bool pm_children_suspended(struct device *dev) || !atomic_read(&dev->power.child_count); } -static inline void pm_suspend_ignore_children(struct device *dev, bool enable) -{ - dev->power.ignore_children = enable; -} - static inline void pm_runtime_get_noresume(struct device *dev) { atomic_inc(&dev->power.usage_count); @@ -130,7 +125,6 @@ static inline void pm_runtime_allow(struct device *dev) {} static inline void pm_runtime_forbid(struct device *dev) {} static inline bool pm_children_suspended(struct device *dev) { return false; } -static inline void pm_suspend_ignore_children(struct device *dev, bool en) {} static inline void pm_runtime_get_noresume(struct device *dev) {} static inline void pm_runtime_put_noidle(struct device *dev) {} static inline bool device_run_wake(struct device *dev) { return false; } -- cgit v1.2.3-70-g09d2 From f6f8285132907757ef84ef8dae0a1244b8cde6ac Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 17 Nov 2011 12:58:07 -0800 Subject: pstore: pass allocated memory region back to caller The buf_lock cannot be held while populating the inodes, so make the backend pass forward an allocated and filled buffer instead. This solves the following backtrace. The effect is that "buf" is only ever used to notify the backends that something was written to it, and shouldn't be used in the read path. To replace the buf_lock during the read path, isolate the open/read/close loop with a separate mutex to maintain serialized access to the backend. Note that is is up to the pstore backend to cope if the (*write)() path is called in the middle of the read path. [ 59.691019] BUG: sleeping function called from invalid context at .../mm/slub.c:847 [ 59.691019] in_atomic(): 0, irqs_disabled(): 1, pid: 1819, name: mount [ 59.691019] Pid: 1819, comm: mount Not tainted 3.0.8 #1 [ 59.691019] Call Trace: [ 59.691019] [<810252d5>] __might_sleep+0xc3/0xca [ 59.691019] [<810a26e6>] kmem_cache_alloc+0x32/0xf3 [ 59.691019] [<810b53ac>] ? __d_lookup_rcu+0x6f/0xf4 [ 59.691019] [<810b68b1>] alloc_inode+0x2a/0x64 [ 59.691019] [<810b6903>] new_inode+0x18/0x43 [ 59.691019] [<81142447>] pstore_get_inode.isra.1+0x11/0x98 [ 59.691019] [<81142623>] pstore_mkfile+0xae/0x26f [ 59.691019] [<810a2a66>] ? kmem_cache_free+0x19/0xb1 [ 59.691019] [<8116c821>] ? ida_get_new_above+0x140/0x158 [ 59.691019] [<811708ea>] ? __init_rwsem+0x1e/0x2c [ 59.691019] [<810b67e8>] ? inode_init_always+0x111/0x1b0 [ 59.691019] [<8102127e>] ? should_resched+0xd/0x27 [ 59.691019] [<8137977f>] ? _cond_resched+0xd/0x21 [ 59.691019] [<81142abf>] pstore_get_records+0x52/0xa7 [ 59.691019] [<8114254b>] pstore_fill_super+0x7d/0x91 [ 59.691019] [<810a7ff5>] mount_single+0x46/0x82 [ 59.691019] [<8114231a>] pstore_mount+0x15/0x17 [ 59.691019] [<811424ce>] ? pstore_get_inode.isra.1+0x98/0x98 [ 59.691019] [<810a8199>] mount_fs+0x5a/0x12d [ 59.691019] [<810b9174>] ? alloc_vfsmnt+0xa4/0x14a [ 59.691019] [<810b9474>] vfs_kern_mount+0x4f/0x7d [ 59.691019] [<810b9d7e>] do_kern_mount+0x34/0xb2 [ 59.691019] [<810bb15f>] do_mount+0x5fc/0x64a [ 59.691019] [<810912fb>] ? strndup_user+0x2e/0x3f [ 59.691019] [<810bb3cb>] sys_mount+0x66/0x99 [ 59.691019] [<8137b537>] sysenter_do_call+0x12/0x26 Signed-off-by: Kees Cook Signed-off-by: Tony Luck --- drivers/acpi/apei/erst.c | 31 ++++++++++++++++++++++--------- drivers/firmware/efivars.c | 9 +++++++-- fs/pstore/platform.c | 13 ++++++++----- include/linux/pstore.h | 4 +++- 4 files changed, 40 insertions(+), 17 deletions(-) (limited to 'include/linux') diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c index 127408069ca..631b9477b99 100644 --- a/drivers/acpi/apei/erst.c +++ b/drivers/acpi/apei/erst.c @@ -932,7 +932,8 @@ static int erst_check_table(struct acpi_table_erst *erst_tab) static int erst_open_pstore(struct pstore_info *psi); static int erst_close_pstore(struct pstore_info *psi); static ssize_t erst_reader(u64 *id, enum pstore_type_id *type, - struct timespec *time, struct pstore_info *psi); + struct timespec *time, char **buf, + struct pstore_info *psi); static int erst_writer(enum pstore_type_id type, u64 *id, unsigned int part, size_t size, struct pstore_info *psi); static int erst_clearer(enum pstore_type_id type, u64 id, @@ -986,17 +987,23 @@ static int erst_close_pstore(struct pstore_info *psi) } static ssize_t erst_reader(u64 *id, enum pstore_type_id *type, - struct timespec *time, struct pstore_info *psi) + struct timespec *time, char **buf, + struct pstore_info *psi) { int rc; ssize_t len = 0; u64 record_id; - struct cper_pstore_record *rcd = (struct cper_pstore_record *) - (erst_info.buf - sizeof(*rcd)); + struct cper_pstore_record *rcd; + size_t rcd_len = sizeof(*rcd) + erst_info.bufsize; if (erst_disable) return -ENODEV; + rcd = kmalloc(rcd_len, GFP_KERNEL); + if (!rcd) { + rc = -ENOMEM; + goto out; + } skip: rc = erst_get_record_id_next(&reader_pos, &record_id); if (rc) @@ -1004,22 +1011,27 @@ skip: /* no more record */ if (record_id == APEI_ERST_INVALID_RECORD_ID) { - rc = -1; + rc = -EINVAL; goto out; } - len = erst_read(record_id, &rcd->hdr, sizeof(*rcd) + - erst_info.bufsize); + len = erst_read(record_id, &rcd->hdr, rcd_len); /* The record may be cleared by others, try read next record */ if (len == -ENOENT) goto skip; - else if (len < 0) { - rc = -1; + else if (len < sizeof(*rcd)) { + rc = -EIO; goto out; } if (uuid_le_cmp(rcd->hdr.creator_id, CPER_CREATOR_PSTORE) != 0) goto skip; + *buf = kmalloc(len, GFP_KERNEL); + if (*buf == NULL) { + rc = -ENOMEM; + goto out; + } + memcpy(*buf, rcd->data, len - sizeof(*rcd)); *id = record_id; if (uuid_le_cmp(rcd->sec_hdr.section_type, CPER_SECTION_TYPE_DMESG) == 0) @@ -1037,6 +1049,7 @@ skip: time->tv_nsec = 0; out: + kfree(rcd); return (rc < 0) ? rc : (len - sizeof(*rcd)); } diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 8370f72d87f..a54a6b972ce 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -457,7 +457,8 @@ static int efi_pstore_close(struct pstore_info *psi) } static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type, - struct timespec *timespec, struct pstore_info *psi) + struct timespec *timespec, + char **buf, struct pstore_info *psi) { efi_guid_t vendor = LINUX_EFI_CRASH_GUID; struct efivars *efivars = psi->data; @@ -478,7 +479,11 @@ static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type, timespec->tv_nsec = 0; get_var_data_locked(efivars, &efivars->walk_entry->var); size = efivars->walk_entry->var.DataSize; - memcpy(psi->buf, efivars->walk_entry->var.Data, size); + *buf = kmalloc(size, GFP_KERNEL); + if (*buf == NULL) + return -ENOMEM; + memcpy(*buf, efivars->walk_entry->var.Data, + size); efivars->walk_entry = list_entry(efivars->walk_entry->list.next, struct efivar_entry, list); return size; diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 2bd620f0d79..57bbf9078ac 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -167,6 +167,7 @@ int pstore_register(struct pstore_info *psi) } psinfo = psi; + mutex_init(&psinfo->read_mutex); spin_unlock(&pstore_lock); if (owner && !try_module_get(owner)) { @@ -195,30 +196,32 @@ EXPORT_SYMBOL_GPL(pstore_register); void pstore_get_records(int quiet) { struct pstore_info *psi = psinfo; + char *buf = NULL; ssize_t size; u64 id; enum pstore_type_id type; struct timespec time; int failed = 0, rc; - unsigned long flags; if (!psi) return; - spin_lock_irqsave(&psinfo->buf_lock, flags); + mutex_lock(&psi->read_mutex); rc = psi->open(psi); if (rc) goto out; - while ((size = psi->read(&id, &type, &time, psi)) > 0) { - rc = pstore_mkfile(type, psi->name, id, psi->buf, (size_t)size, + while ((size = psi->read(&id, &type, &time, &buf, psi)) > 0) { + rc = pstore_mkfile(type, psi->name, id, buf, (size_t)size, time, psi); + kfree(buf); + buf = NULL; if (rc && (rc != -EEXIST || !quiet)) failed++; } psi->close(psi); out: - spin_unlock_irqrestore(&psinfo->buf_lock, flags); + mutex_unlock(&psi->read_mutex); if (failed) printk(KERN_WARNING "pstore: failed to load %d record(s) from '%s'\n", diff --git a/include/linux/pstore.h b/include/linux/pstore.h index ea567321ae3..2ca8cde5459 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -35,10 +35,12 @@ struct pstore_info { spinlock_t buf_lock; /* serialize access to 'buf' */ char *buf; size_t bufsize; + struct mutex read_mutex; /* serialize open/read/close */ int (*open)(struct pstore_info *psi); int (*close)(struct pstore_info *psi); ssize_t (*read)(u64 *id, enum pstore_type_id *type, - struct timespec *time, struct pstore_info *psi); + struct timespec *time, char **buf, + struct pstore_info *psi); int (*write)(enum pstore_type_id type, u64 *id, unsigned int part, size_t size, struct pstore_info *psi); int (*erase)(enum pstore_type_id type, u64 id, -- cgit v1.2.3-70-g09d2 From a5c86e986f0b2fe779f13cf53ce6e9f467b03950 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Sat, 19 Nov 2011 02:33:57 -0800 Subject: hugetlb: remove dummy definitions of HPAGE_MASK and HPAGE_SIZE Dummy, non-zero definitions for HPAGE_MASK and HPAGE_SIZE were added in 51c6f666fceb ("mm: ZAP_BLOCK causes redundant work") to avoid a divide by zero in generic kernel code. That code has since been removed, but probably should never have been added in the first place: we don't want HPAGE_SIZE to act like PAGE_SIZE for code that is working with hugepages, for example, when the dependency on CONFIG_HUGETLB_PAGE has not been fulfilled. Because hugepage size can differ from architecture to architecture, each is required to have their own definitions for both HPAGE_MASK and HPAGE_SIZE. This is always done in arch/*/include/asm/page.h. So, just remove the dummy and dangerous definitions since they are no longer needed and reveals the correct dependencies. Tested on architectures using the definitions with allyesconfig: x86 (even with thp), hppa, mips, powerpc, s390, sh3, sh4, sparc, and sparc64, and with defconfig on ia64. Signed-off-by: David Rientjes Signed-off-by: Linus Torvalds --- include/linux/hugetlb.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 19644e0016b..d9d6c868b86 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -110,11 +110,6 @@ static inline void copy_huge_page(struct page *dst, struct page *src) #define hugetlb_change_protection(vma, address, end, newprot) -#ifndef HPAGE_MASK -#define HPAGE_MASK PAGE_MASK /* Keep the compiler happy */ -#define HPAGE_SIZE PAGE_SIZE -#endif - #endif /* !CONFIG_HUGETLB_PAGE */ #define HUGETLB_ANON_FILE "anon_hugepage" -- cgit v1.2.3-70-g09d2 From 5eccdf5e06eb67779716ae26142402a1ae9b012c Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Mon, 21 Nov 2011 06:53:46 +0000 Subject: tc: comment spelling fixes Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- include/linux/pkt_sched.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index c5336705921..7281d5acf2f 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -30,7 +30,7 @@ */ struct tc_stats { - __u64 bytes; /* NUmber of enqueues bytes */ + __u64 bytes; /* Number of enqueued bytes */ __u32 packets; /* Number of enqueued packets */ __u32 drops; /* Packets dropped because of lack of resources */ __u32 overlimits; /* Number of throttle events when this @@ -297,7 +297,7 @@ struct tc_htb_glob { __u32 debug; /* debug flags */ /* stats */ - __u32 direct_pkts; /* count of non shapped packets */ + __u32 direct_pkts; /* count of non shaped packets */ }; enum { TCA_HTB_UNSPEC, @@ -503,7 +503,7 @@ enum { }; #define NETEM_LOSS_MAX (__NETEM_LOSS_MAX - 1) -/* State transition probablities for 4 state model */ +/* State transition probabilities for 4 state model */ struct tc_netem_gimodel { __u32 p13; __u32 p31; -- cgit v1.2.3-70-g09d2 From 67820021dc9c8da37f773025190280f55f3626d4 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Wed, 23 Nov 2011 11:33:07 +0100 Subject: i2c: Delete ANY_I2C_BUS Last piece of code using ANY_I2C_BUS was deleted almost 2 years ago, so ANY_I2C_BUS can go away as well. Signed-off-by: Jean Delvare --- include/linux/i2c.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/linux') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index a81bf6d23b3..07d103a06d6 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -432,9 +432,6 @@ void i2c_unlock_adapter(struct i2c_adapter *); /* Internal numbers to terminate lists */ #define I2C_CLIENT_END 0xfffeU -/* The numbers to use to set I2C bus address */ -#define ANY_I2C_BUS 0xffff - /* Construct an I2C_CLIENT_END-terminated array of i2c addresses */ #define I2C_ADDRS(addr, addrs...) \ ((const unsigned short []){ addr, ## addrs, I2C_CLIENT_END }) -- cgit v1.2.3-70-g09d2 From 780dc9ba4eb682a89be48d5b814feae6722a19e0 Mon Sep 17 00:00:00 2001 From: Afzal Mohammed Date: Tue, 8 Nov 2011 18:54:10 +0530 Subject: regulator: TPS65910: Fix VDD1/2 voltage selector count Count of selector voltage is required for regulator_set_voltage to work via set_voltage_sel. VDD1/2 currently have it as zero, so regulator_set_voltage won't work for VDD1/2. Update count (n_voltages) for VDD1/2. Output Voltage = (step value * 12.5 mV + 562.5 mV) * gain With above expr, number of voltages that can be selected is step value count * gain count constant for gain count will be called VDD1_2_NUM_VOLT_COARSE existing constant for step value count is VDD1_2_NUM_VOLTS, use VDD1_2_NUM_VOLT_FINE instead to make clear that step value is not the only component in deciding selectable voltage count Signed-off-by: Afzal Mohammed Signed-off-by: Mark Brown --- drivers/regulator/tps65910-regulator.c | 14 ++++++++------ include/linux/mfd/tps65910.h | 3 ++- 2 files changed, 10 insertions(+), 7 deletions(-) (limited to 'include/linux') diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c index 66d2d60b436..b552aae55b4 100644 --- a/drivers/regulator/tps65910-regulator.c +++ b/drivers/regulator/tps65910-regulator.c @@ -664,10 +664,10 @@ static int tps65910_set_voltage_dcdc(struct regulator_dev *dev, switch (id) { case TPS65910_REG_VDD1: - dcdc_mult = (selector / VDD1_2_NUM_VOLTS) + 1; + dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; if (dcdc_mult == 1) dcdc_mult--; - vsel = (selector % VDD1_2_NUM_VOLTS) + 3; + vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; tps65910_modify_bits(pmic, TPS65910_VDD1, (dcdc_mult << VDD1_VGAIN_SEL_SHIFT), @@ -675,10 +675,10 @@ static int tps65910_set_voltage_dcdc(struct regulator_dev *dev, tps65910_reg_write(pmic, TPS65910_VDD1_OP, vsel); break; case TPS65910_REG_VDD2: - dcdc_mult = (selector / VDD1_2_NUM_VOLTS) + 1; + dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; if (dcdc_mult == 1) dcdc_mult--; - vsel = (selector % VDD1_2_NUM_VOLTS) + 3; + vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3; tps65910_modify_bits(pmic, TPS65910_VDD2, (dcdc_mult << VDD2_VGAIN_SEL_SHIFT), @@ -756,9 +756,9 @@ static int tps65910_list_voltage_dcdc(struct regulator_dev *dev, switch (id) { case TPS65910_REG_VDD1: case TPS65910_REG_VDD2: - mult = (selector / VDD1_2_NUM_VOLTS) + 1; + mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1; volt = VDD1_2_MIN_VOLT + - (selector % VDD1_2_NUM_VOLTS) * VDD1_2_OFFSET; + (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET; break; case TPS65911_REG_VDDCTRL: volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET); @@ -947,6 +947,8 @@ static __devinit int tps65910_probe(struct platform_device *pdev) if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) { pmic->desc[i].ops = &tps65910_ops_dcdc; + pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE * + VDD1_2_NUM_VOLT_COARSE; } else if (i == TPS65910_REG_VDD3) { if (tps65910_chip_id(tps65910) == TPS65910) pmic->desc[i].ops = &tps65910_ops_vdd3; diff --git a/include/linux/mfd/tps65910.h b/include/linux/mfd/tps65910.h index 82b4c8801a4..8bf2cb9502d 100644 --- a/include/linux/mfd/tps65910.h +++ b/include/linux/mfd/tps65910.h @@ -243,7 +243,8 @@ /*Registers VDD1, VDD2 voltage values definitions */ -#define VDD1_2_NUM_VOLTS 73 +#define VDD1_2_NUM_VOLT_FINE 73 +#define VDD1_2_NUM_VOLT_COARSE 3 #define VDD1_2_MIN_VOLT 6000 #define VDD1_2_OFFSET 125 -- cgit v1.2.3-70-g09d2 From fe1a7fe2c4456679b3402f04268bdfafca7b127a Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Tue, 15 Nov 2011 16:17:18 +0200 Subject: virtio-mmio: Correct the name of the guest features selector Guest features selector spelling mistake. Cc: Pawel Moll Cc: Rusty Russell Cc: virtualization@lists.linux-foundation.org Signed-off-by: Sasha Levin Signed-off-by: Rusty Russell --- drivers/virtio/virtio_mmio.c | 2 +- include/linux/virtio_mmio.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index acc5e43c373..7317dc2ec42 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -118,7 +118,7 @@ static void vm_finalize_features(struct virtio_device *vdev) vring_transport_features(vdev); for (i = 0; i < ARRAY_SIZE(vdev->features); i++) { - writel(i, vm_dev->base + VIRTIO_MMIO_GUEST_FEATURES_SET); + writel(i, vm_dev->base + VIRTIO_MMIO_GUEST_FEATURES_SEL); writel(vdev->features[i], vm_dev->base + VIRTIO_MMIO_GUEST_FEATURES); } diff --git a/include/linux/virtio_mmio.h b/include/linux/virtio_mmio.h index 27c7edefbc8..5c7b6f0daef 100644 --- a/include/linux/virtio_mmio.h +++ b/include/linux/virtio_mmio.h @@ -63,7 +63,7 @@ #define VIRTIO_MMIO_GUEST_FEATURES 0x020 /* Activated features set selector - Write Only */ -#define VIRTIO_MMIO_GUEST_FEATURES_SET 0x024 +#define VIRTIO_MMIO_GUEST_FEATURES_SEL 0x024 /* Guest's memory page size in bytes - Write Only */ #define VIRTIO_MMIO_GUEST_PAGE_SIZE 0x028 -- cgit v1.2.3-70-g09d2 From e6af578c5305be693a1bc7f4dc7b51dd82d41425 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 17 Nov 2011 17:41:15 +0200 Subject: virtio-pci: make reset operation safer virtio pci device reset actually just does an I/O write, which in PCI is really posted, that is it can complete on CPU before the device has received it. Further, interrupts might have been pending on another CPU, so device callback might get invoked after reset. This conflicts with how drivers use reset, which is typically: reset unregister a callback running after reset completed can race with unregister, potentially leading to use after free bugs. Fix by flushing out the write, and flushing pending interrupts. This assumes that device is never reset from its vq/config callbacks, or in parallel with being added/removed, document this assumption. Signed-off-by: Michael S. Tsirkin Signed-off-by: Rusty Russell --- drivers/virtio/virtio_pci.c | 18 ++++++++++++++++++ include/linux/virtio_config.h | 2 ++ 2 files changed, 20 insertions(+) (limited to 'include/linux') diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c index 3d1bf41e889..03d1984bd36 100644 --- a/drivers/virtio/virtio_pci.c +++ b/drivers/virtio/virtio_pci.c @@ -169,11 +169,29 @@ static void vp_set_status(struct virtio_device *vdev, u8 status) iowrite8(status, vp_dev->ioaddr + VIRTIO_PCI_STATUS); } +/* wait for pending irq handlers */ +static void vp_synchronize_vectors(struct virtio_device *vdev) +{ + struct virtio_pci_device *vp_dev = to_vp_device(vdev); + int i; + + if (vp_dev->intx_enabled) + synchronize_irq(vp_dev->pci_dev->irq); + + for (i = 0; i < vp_dev->msix_vectors; ++i) + synchronize_irq(vp_dev->msix_entries[i].vector); +} + static void vp_reset(struct virtio_device *vdev) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); /* 0 status means a reset. */ iowrite8(0, vp_dev->ioaddr + VIRTIO_PCI_STATUS); + /* Flush out the status write, and flush in device writes, + * including MSi-X interrupts, if any. */ + ioread8(vp_dev->ioaddr + VIRTIO_PCI_STATUS); + /* Flush pending VQ/configuration callbacks. */ + vp_synchronize_vectors(vdev); } /* the notify function used when creating a virt queue */ diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index add4790b21f..e9e72bda1b7 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -85,6 +85,8 @@ * @reset: reset the device * vdev: the virtio device * After this, status and feature negotiation must be done again + * Device must not be reset from its vq/config callbacks, or in + * parallel with being added/removed. * @find_vqs: find virtqueues and instantiate them. * vdev: the virtio_device * nvqs: the number of virtqueues to find -- cgit v1.2.3-70-g09d2 From f7bc83d87d242917ca0ee041ed509f57f361dd56 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 23 Nov 2011 21:20:32 +0100 Subject: PM: Update comments describing device power management callbacks The comments describing device power management callbacks in include/pm.h are outdated and somewhat confusing, so make them reflect the reality more accurately. Signed-off-by: Rafael J. Wysocki --- include/linux/pm.h | 229 +++++++++++++++++++++++++++++++---------------------- 1 file changed, 134 insertions(+), 95 deletions(-) (limited to 'include/linux') diff --git a/include/linux/pm.h b/include/linux/pm.h index 5c4c8b18c8b..3f3ed83a9aa 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -54,118 +54,145 @@ typedef struct pm_message { /** * struct dev_pm_ops - device PM callbacks * - * Several driver power state transitions are externally visible, affecting + * Several device power state transitions are externally visible, affecting * the state of pending I/O queues and (for drivers that touch hardware) * interrupts, wakeups, DMA, and other hardware state. There may also be - * internal transitions to various low power modes, which are transparent + * internal transitions to various low-power modes which are transparent * to the rest of the driver stack (such as a driver that's ON gating off * clocks which are not in active use). * - * The externally visible transitions are handled with the help of the following - * callbacks included in this structure: - * - * @prepare: Prepare the device for the upcoming transition, but do NOT change - * its hardware state. Prevent new children of the device from being - * registered after @prepare() returns (the driver's subsystem and - * generally the rest of the kernel is supposed to prevent new calls to the - * probe method from being made too once @prepare() has succeeded). If - * @prepare() detects a situation it cannot handle (e.g. registration of a - * child already in progress), it may return -EAGAIN, so that the PM core - * can execute it once again (e.g. after the new child has been registered) - * to recover from the race condition. This method is executed for all - * kinds of suspend transitions and is followed by one of the suspend - * callbacks: @suspend(), @freeze(), or @poweroff(). - * The PM core executes @prepare() for all devices before starting to - * execute suspend callbacks for any of them, so drivers may assume all of - * the other devices to be present and functional while @prepare() is being - * executed. In particular, it is safe to make GFP_KERNEL memory - * allocations from within @prepare(). However, drivers may NOT assume - * anything about the availability of the user space at that time and it - * is not correct to request firmware from within @prepare() (it's too - * late to do that). [To work around this limitation, drivers may - * register suspend and hibernation notifiers that are executed before the - * freezing of tasks.] + * The externally visible transitions are handled with the help of callbacks + * included in this structure in such a way that two levels of callbacks are + * involved. First, the PM core executes callbacks provided by PM domains, + * device types, classes and bus types. They are the subsystem-level callbacks + * supposed to execute callbacks provided by device drivers, although they may + * choose not to do that. If the driver callbacks are executed, they have to + * collaborate with the subsystem-level callbacks to achieve the goals + * appropriate for the given system transition, given transition phase and the + * subsystem the device belongs to. + * + * @prepare: The principal role of this callback is to prevent new children of + * the device from being registered after it has returned (the driver's + * subsystem and generally the rest of the kernel is supposed to prevent + * new calls to the probe method from being made too once @prepare() has + * succeeded). If @prepare() detects a situation it cannot handle (e.g. + * registration of a child already in progress), it may return -EAGAIN, so + * that the PM core can execute it once again (e.g. after a new child has + * been registered) to recover from the race condition. + * This method is executed for all kinds of suspend transitions and is + * followed by one of the suspend callbacks: @suspend(), @freeze(), or + * @poweroff(). The PM core executes subsystem-level @prepare() for all + * devices before starting to invoke suspend callbacks for any of them, so + * generally devices may be assumed to be functional or to respond to + * runtime resume requests while @prepare() is being executed. However, + * device drivers may NOT assume anything about the availability of user + * space at that time and it is NOT valid to request firmware from within + * @prepare() (it's too late to do that). It also is NOT valid to allocate + * substantial amounts of memory from @prepare() in the GFP_KERNEL mode. + * [To work around these limitations, drivers may register suspend and + * hibernation notifiers to be executed before the freezing of tasks.] * * @complete: Undo the changes made by @prepare(). This method is executed for * all kinds of resume transitions, following one of the resume callbacks: * @resume(), @thaw(), @restore(). Also called if the state transition - * fails before the driver's suspend callback (@suspend(), @freeze(), - * @poweroff()) can be executed (e.g. if the suspend callback fails for one + * fails before the driver's suspend callback: @suspend(), @freeze() or + * @poweroff(), can be executed (e.g. if the suspend callback fails for one * of the other devices that the PM core has unsuccessfully attempted to * suspend earlier). - * The PM core executes @complete() after it has executed the appropriate - * resume callback for all devices. + * The PM core executes subsystem-level @complete() after it has executed + * the appropriate resume callbacks for all devices. * * @suspend: Executed before putting the system into a sleep state in which the - * contents of main memory are preserved. Quiesce the device, put it into - * a low power state appropriate for the upcoming system state (such as - * PCI_D3hot), and enable wakeup events as appropriate. + * contents of main memory are preserved. The exact action to perform + * depends on the device's subsystem (PM domain, device type, class or bus + * type), but generally the device must be quiescent after subsystem-level + * @suspend() has returned, so that it doesn't do any I/O or DMA. + * Subsystem-level @suspend() is executed for all devices after invoking + * subsystem-level @prepare() for all of them. * * @resume: Executed after waking the system up from a sleep state in which the - * contents of main memory were preserved. Put the device into the - * appropriate state, according to the information saved in memory by the - * preceding @suspend(). The driver starts working again, responding to - * hardware events and software requests. The hardware may have gone - * through a power-off reset, or it may have maintained state from the - * previous suspend() which the driver may rely on while resuming. On most - * platforms, there are no restrictions on availability of resources like - * clocks during @resume(). + * contents of main memory were preserved. The exact action to perform + * depends on the device's subsystem, but generally the driver is expected + * to start working again, responding to hardware events and software + * requests (the device itself may be left in a low-power state, waiting + * for a runtime resume to occur). The state of the device at the time its + * driver's @resume() callback is run depends on the platform and subsystem + * the device belongs to. On most platforms, there are no restrictions on + * availability of resources like clocks during @resume(). + * Subsystem-level @resume() is executed for all devices after invoking + * subsystem-level @resume_noirq() for all of them. * * @freeze: Hibernation-specific, executed before creating a hibernation image. - * Quiesce operations so that a consistent image can be created, but do NOT - * otherwise put the device into a low power device state and do NOT emit - * system wakeup events. Save in main memory the device settings to be - * used by @restore() during the subsequent resume from hibernation or by - * the subsequent @thaw(), if the creation of the image or the restoration - * of main memory contents from it fails. + * Analogous to @suspend(), but it should not enable the device to signal + * wakeup events or change its power state. The majority of subsystems + * (with the notable exception of the PCI bus type) expect the driver-level + * @freeze() to save the device settings in memory to be used by @restore() + * during the subsequent resume from hibernation. + * Subsystem-level @freeze() is executed for all devices after invoking + * subsystem-level @prepare() for all of them. * * @thaw: Hibernation-specific, executed after creating a hibernation image OR - * if the creation of the image fails. Also executed after a failing + * if the creation of an image has failed. Also executed after a failing * attempt to restore the contents of main memory from such an image. * Undo the changes made by the preceding @freeze(), so the device can be * operated in the same way as immediately before the call to @freeze(). + * Subsystem-level @thaw() is executed for all devices after invoking + * subsystem-level @thaw_noirq() for all of them. It also may be executed + * directly after @freeze() in case of a transition error. * * @poweroff: Hibernation-specific, executed after saving a hibernation image. - * Quiesce the device, put it into a low power state appropriate for the - * upcoming system state (such as PCI_D3hot), and enable wakeup events as - * appropriate. + * Analogous to @suspend(), but it need not save the device's settings in + * memory. + * Subsystem-level @poweroff() is executed for all devices after invoking + * subsystem-level @prepare() for all of them. * * @restore: Hibernation-specific, executed after restoring the contents of main - * memory from a hibernation image. Driver starts working again, - * responding to hardware events and software requests. Drivers may NOT - * make ANY assumptions about the hardware state right prior to @restore(). - * On most platforms, there are no restrictions on availability of - * resources like clocks during @restore(). - * - * @suspend_noirq: Complete the operations of ->suspend() by carrying out any - * actions required for suspending the device that need interrupts to be - * disabled - * - * @resume_noirq: Prepare for the execution of ->resume() by carrying out any - * actions required for resuming the device that need interrupts to be - * disabled - * - * @freeze_noirq: Complete the operations of ->freeze() by carrying out any - * actions required for freezing the device that need interrupts to be - * disabled - * - * @thaw_noirq: Prepare for the execution of ->thaw() by carrying out any - * actions required for thawing the device that need interrupts to be - * disabled - * - * @poweroff_noirq: Complete the operations of ->poweroff() by carrying out any - * actions required for handling the device that need interrupts to be - * disabled - * - * @restore_noirq: Prepare for the execution of ->restore() by carrying out any - * actions required for restoring the operations of the device that need - * interrupts to be disabled + * memory from a hibernation image, analogous to @resume(). + * + * @suspend_noirq: Complete the actions started by @suspend(). Carry out any + * additional operations required for suspending the device that might be + * racing with its driver's interrupt handler, which is guaranteed not to + * run while @suspend_noirq() is being executed. + * It generally is expected that the device will be in a low-power state + * (appropriate for the target system sleep state) after subsystem-level + * @suspend_noirq() has returned successfully. If the device can generate + * system wakeup signals and is enabled to wake up the system, it should be + * configured to do so at that time. However, depending on the platform + * and device's subsystem, @suspend() may be allowed to put the device into + * the low-power state and configure it to generate wakeup signals, in + * which case it generally is not necessary to define @suspend_noirq(). + * + * @resume_noirq: Prepare for the execution of @resume() by carrying out any + * operations required for resuming the device that might be racing with + * its driver's interrupt handler, which is guaranteed not to run while + * @resume_noirq() is being executed. + * + * @freeze_noirq: Complete the actions started by @freeze(). Carry out any + * additional operations required for freezing the device that might be + * racing with its driver's interrupt handler, which is guaranteed not to + * run while @freeze_noirq() is being executed. + * The power state of the device should not be changed by either @freeze() + * or @freeze_noirq() and it should not be configured to signal system + * wakeup by any of these callbacks. + * + * @thaw_noirq: Prepare for the execution of @thaw() by carrying out any + * operations required for thawing the device that might be racing with its + * driver's interrupt handler, which is guaranteed not to run while + * @thaw_noirq() is being executed. + * + * @poweroff_noirq: Complete the actions started by @poweroff(). Analogous to + * @suspend_noirq(), but it need not save the device's settings in memory. + * + * @restore_noirq: Prepare for the execution of @restore() by carrying out any + * operations required for thawing the device that might be racing with its + * driver's interrupt handler, which is guaranteed not to run while + * @restore_noirq() is being executed. Analogous to @resume_noirq(). * * All of the above callbacks, except for @complete(), return error codes. * However, the error codes returned by the resume operations, @resume(), - * @thaw(), @restore(), @resume_noirq(), @thaw_noirq(), and @restore_noirq() do + * @thaw(), @restore(), @resume_noirq(), @thaw_noirq(), and @restore_noirq(), do * not cause the PM core to abort the resume transition during which they are - * returned. The error codes returned in that cases are only printed by the PM + * returned. The error codes returned in those cases are only printed by the PM * core to the system logs for debugging purposes. Still, it is recommended * that drivers only return error codes from their resume methods in case of an * unrecoverable failure (i.e. when the device being handled refuses to resume @@ -174,31 +201,43 @@ typedef struct pm_message { * their children. * * It is allowed to unregister devices while the above callbacks are being - * executed. However, it is not allowed to unregister a device from within any - * of its own callbacks. + * executed. However, a callback routine must NOT try to unregister the device + * it was called for, although it may unregister children of that device (for + * example, if it detects that a child was unplugged while the system was + * asleep). + * + * Refer to Documentation/power/devices.txt for more information about the role + * of the above callbacks in the system suspend process. * - * There also are the following callbacks related to run-time power management - * of devices: + * There also are callbacks related to runtime power management of devices. + * Again, these callbacks are executed by the PM core only for subsystems + * (PM domains, device types, classes and bus types) and the subsystem-level + * callbacks are supposed to invoke the driver callbacks. Moreover, the exact + * actions to be performed by a device driver's callbacks generally depend on + * the platform and subsystem the device belongs to. * * @runtime_suspend: Prepare the device for a condition in which it won't be * able to communicate with the CPU(s) and RAM due to power management. - * This need not mean that the device should be put into a low power state. + * This need not mean that the device should be put into a low-power state. * For example, if the device is behind a link which is about to be turned * off, the device may remain at full power. If the device does go to low - * power and is capable of generating run-time wake-up events, remote - * wake-up (i.e., a hardware mechanism allowing the device to request a - * change of its power state via a wake-up event, such as PCI PME) should - * be enabled for it. + * power and is capable of generating runtime wakeup events, remote wakeup + * (i.e., a hardware mechanism allowing the device to request a change of + * its power state via an interrupt) should be enabled for it. * * @runtime_resume: Put the device into the fully active state in response to a - * wake-up event generated by hardware or at the request of software. If - * necessary, put the device into the full power state and restore its + * wakeup event generated by hardware or at the request of software. If + * necessary, put the device into the full-power state and restore its * registers, so that it is fully operational. * - * @runtime_idle: Device appears to be inactive and it might be put into a low - * power state if all of the necessary conditions are satisfied. Check + * @runtime_idle: Device appears to be inactive and it might be put into a + * low-power state if all of the necessary conditions are satisfied. Check * these conditions and handle the device as appropriate, possibly queueing * a suspend request for it. The return value is ignored by the PM core. + * + * Refer to Documentation/power/runtime_pm.txt for more information about the + * role of the above callbacks in device runtime power management. + * */ struct dev_pm_ops { -- cgit v1.2.3-70-g09d2 From 5cac98dd06bc43a7baab3523184f70fd359e9f35 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Sun, 27 Nov 2011 21:14:46 +0000 Subject: net: Fix corruption in /proc/*/net/dev_mcast I just hit this during my testing. Isn't there another bug lurking? BUG kmalloc-8: Redzone overwritten INFO: 0xc0000000de9dec48-0xc0000000de9dec4b. First byte 0x0 instead of 0xcc INFO: Allocated in .__seq_open_private+0x30/0xa0 age=0 cpu=5 pid=3896 .__kmalloc+0x1e0/0x2d0 .__seq_open_private+0x30/0xa0 .seq_open_net+0x60/0xe0 .dev_mc_seq_open+0x4c/0x70 .proc_reg_open+0xd8/0x260 .__dentry_open.clone.11+0x2b8/0x400 .do_last+0xf4/0x950 .path_openat+0xf8/0x480 .do_filp_open+0x48/0xc0 .do_sys_open+0x140/0x250 syscall_exit+0x0/0x40 dev_mc_seq_ops uses dev_seq_start/next/stop but only allocates sizeof(struct seq_net_private) of private data, whereas it expects sizeof(struct dev_iter_state): struct dev_iter_state { struct seq_net_private p; unsigned int pos; /* bucket << BUCKET_SPACE + offset */ }; Create dev_seq_open_ops and use it so we don't have to expose struct dev_iter_state. [ Problem added by commit f04565ddf52e4 (dev: use name hash for dev_seq_ops) -Eric ] Signed-off-by: Anton Blanchard Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/netdevice.h | 2 ++ net/core/dev.c | 6 ++++++ net/core/dev_addr_lists.c | 3 +-- 3 files changed, 9 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index cbeb5867cff..a82ad4dd306 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2536,6 +2536,8 @@ extern void net_disable_timestamp(void); extern void *dev_seq_start(struct seq_file *seq, loff_t *pos); extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos); extern void dev_seq_stop(struct seq_file *seq, void *v); +extern int dev_seq_open_ops(struct inode *inode, struct file *file, + const struct seq_operations *ops); #endif extern int netdev_class_create_file(struct class_attribute *class_attr); diff --git a/net/core/dev.c b/net/core/dev.c index 6ba50a1e404..1482eea0bbf 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4282,6 +4282,12 @@ static int dev_seq_open(struct inode *inode, struct file *file) sizeof(struct dev_iter_state)); } +int dev_seq_open_ops(struct inode *inode, struct file *file, + const struct seq_operations *ops) +{ + return seq_open_net(inode, file, ops, sizeof(struct dev_iter_state)); +} + static const struct file_operations dev_seq_fops = { .owner = THIS_MODULE, .open = dev_seq_open, diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c index 277faef9148..febba516db6 100644 --- a/net/core/dev_addr_lists.c +++ b/net/core/dev_addr_lists.c @@ -696,8 +696,7 @@ static const struct seq_operations dev_mc_seq_ops = { static int dev_mc_seq_open(struct inode *inode, struct file *file) { - return seq_open_net(inode, file, &dev_mc_seq_ops, - sizeof(struct seq_net_private)); + return dev_seq_open_ops(inode, file, &dev_mc_seq_ops); } static const struct file_operations dev_mc_seq_fops = { -- cgit v1.2.3-70-g09d2 From 4f718a29fe4908c2cea782f751e9805319684e2b Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 28 Nov 2011 09:44:14 +0100 Subject: firmware: Sigma: Prevent out of bounds memory access The SigmaDSP firmware loader currently does not perform enough boundary size checks when processing the firmware. As a result it is possible that a malformed firmware can cause an out of bounds memory access. This patch adds checks which ensure that both the action header and the payload are completely inside the firmware data boundaries before processing them. Signed-off-by: Lars-Peter Clausen Acked-by: Mike Frysinger Signed-off-by: Mark Brown Cc: stable@kernel.org --- drivers/firmware/sigma.c | 76 +++++++++++++++++++++++++++++++++++------------- include/linux/sigma.h | 5 ---- 2 files changed, 55 insertions(+), 26 deletions(-) (limited to 'include/linux') diff --git a/drivers/firmware/sigma.c b/drivers/firmware/sigma.c index f10fc521951..c780baa59ed 100644 --- a/drivers/firmware/sigma.c +++ b/drivers/firmware/sigma.c @@ -14,13 +14,34 @@ #include #include -/* Return: 0==OK, <0==error, =1 ==no more actions */ +static size_t sigma_action_size(struct sigma_action *sa) +{ + size_t payload = 0; + + switch (sa->instr) { + case SIGMA_ACTION_WRITEXBYTES: + case SIGMA_ACTION_WRITESINGLE: + case SIGMA_ACTION_WRITESAFELOAD: + payload = sigma_action_len(sa); + break; + default: + break; + } + + payload = ALIGN(payload, 2); + + return payload + sizeof(struct sigma_action); +} + +/* + * Returns a negative error value in case of an error, 0 if processing of + * the firmware should be stopped after this action, 1 otherwise. + */ static int -process_sigma_action(struct i2c_client *client, struct sigma_firmware *ssfw) +process_sigma_action(struct i2c_client *client, struct sigma_action *sa) { - struct sigma_action *sa = (void *)(ssfw->fw->data + ssfw->pos); size_t len = sigma_action_len(sa); - int ret = 0; + int ret; pr_debug("%s: instr:%i addr:%#x len:%zu\n", __func__, sa->instr, sa->addr, len); @@ -29,44 +50,50 @@ process_sigma_action(struct i2c_client *client, struct sigma_firmware *ssfw) case SIGMA_ACTION_WRITEXBYTES: case SIGMA_ACTION_WRITESINGLE: case SIGMA_ACTION_WRITESAFELOAD: - if (ssfw->fw->size < ssfw->pos + len) - return -EINVAL; ret = i2c_master_send(client, (void *)&sa->addr, len); if (ret < 0) return -EINVAL; break; - case SIGMA_ACTION_DELAY: - ret = 0; udelay(len); len = 0; break; - case SIGMA_ACTION_END: - return 1; - + return 0; default: return -EINVAL; } - /* when arrive here ret=0 or sent data */ - ssfw->pos += sigma_action_size(sa, len); - return ssfw->pos == ssfw->fw->size; + return 1; } static int process_sigma_actions(struct i2c_client *client, struct sigma_firmware *ssfw) { - pr_debug("%s: processing %p\n", __func__, ssfw); + struct sigma_action *sa; + size_t size; + int ret; + + while (ssfw->pos + sizeof(*sa) <= ssfw->fw->size) { + sa = (struct sigma_action *)(ssfw->fw->data + ssfw->pos); + + size = sigma_action_size(sa); + ssfw->pos += size; + if (ssfw->pos > ssfw->fw->size || size == 0) + break; + + ret = process_sigma_action(client, sa); - while (1) { - int ret = process_sigma_action(client, ssfw); pr_debug("%s: action returned %i\n", __func__, ret); - if (ret == 1) - return 0; - else if (ret) + + if (ret <= 0) return ret; } + + if (ssfw->pos != ssfw->fw->size) + return -EINVAL; + + return 0; } int process_sigma_firmware(struct i2c_client *client, const char *name) @@ -89,7 +116,14 @@ int process_sigma_firmware(struct i2c_client *client, const char *name) /* then verify the header */ ret = -EINVAL; - if (fw->size < sizeof(*ssfw_head)) + + /* + * Reject too small or unreasonable large files. The upper limit has been + * chosen a bit arbitrarily, but it should be enough for all practical + * purposes and having the limit makes it easier to avoid integer + * overflows later in the loading process. + */ + if (fw->size < sizeof(*ssfw_head) || fw->size >= 0x4000000) goto done; ssfw_head = (void *)fw->data; diff --git a/include/linux/sigma.h b/include/linux/sigma.h index e2accb3164d..9a138c2946b 100644 --- a/include/linux/sigma.h +++ b/include/linux/sigma.h @@ -50,11 +50,6 @@ static inline u32 sigma_action_len(struct sigma_action *sa) return (sa->len_hi << 16) | sa->len; } -static inline size_t sigma_action_size(struct sigma_action *sa, u32 payload_len) -{ - return sizeof(*sa) + payload_len + (payload_len % 2); -} - extern int process_sigma_firmware(struct i2c_client *client, const char *name); #endif -- cgit v1.2.3-70-g09d2 From bda63586bc5929e97288cdb371bb6456504867ed Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 28 Nov 2011 09:44:16 +0100 Subject: firmware: Sigma: Fix endianess issues Currently the SigmaDSP firmware loader only works correctly on little-endian systems. Fix this by using the proper endianess conversion functions. Signed-off-by: Lars-Peter Clausen Acked-by: Mike Frysinger Signed-off-by: Mark Brown Cc: stable@kernel.org --- drivers/firmware/sigma.c | 2 +- include/linux/sigma.h | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/drivers/firmware/sigma.c b/drivers/firmware/sigma.c index 36265de0a9e..1eedb6f7fda 100644 --- a/drivers/firmware/sigma.c +++ b/drivers/firmware/sigma.c @@ -133,7 +133,7 @@ int process_sigma_firmware(struct i2c_client *client, const char *name) crc = crc32(0, fw->data + sizeof(*ssfw_head), fw->size - sizeof(*ssfw_head)); pr_debug("%s: crc=%x\n", __func__, crc); - if (crc != ssfw_head->crc) + if (crc != le32_to_cpu(ssfw_head->crc)) goto done; ssfw.pos = sizeof(*ssfw_head); diff --git a/include/linux/sigma.h b/include/linux/sigma.h index 9a138c2946b..d0de882c0d9 100644 --- a/include/linux/sigma.h +++ b/include/linux/sigma.h @@ -24,7 +24,7 @@ struct sigma_firmware { struct sigma_firmware_header { unsigned char magic[7]; u8 version; - u32 crc; + __le32 crc; }; enum { @@ -40,14 +40,14 @@ enum { struct sigma_action { u8 instr; u8 len_hi; - u16 len; - u16 addr; + __le16 len; + __be16 addr; unsigned char payload[]; }; static inline u32 sigma_action_len(struct sigma_action *sa) { - return (sa->len_hi << 16) | sa->len; + return (sa->len_hi << 16) | le16_to_cpu(sa->len); } extern int process_sigma_firmware(struct i2c_client *client, const char *name); -- cgit v1.2.3-70-g09d2 From a67ba43d30bf8c1cfdc2615439455302d2408453 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Thu, 1 Dec 2011 12:54:31 -0500 Subject: asm-generic/unistd.h: support new process_vm_{readv,write} syscalls Also prototype the "compat" functions so they can be referenced from C code. Signed-off-by: Chris Metcalf Acked-by: Arnd Bergmann --- include/asm-generic/unistd.h | 8 +++++++- include/linux/compat.h | 9 +++++++++ 2 files changed, 16 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h index f4c38d8c667..2292d1af9d7 100644 --- a/include/asm-generic/unistd.h +++ b/include/asm-generic/unistd.h @@ -685,9 +685,15 @@ __SYSCALL(__NR_syncfs, sys_syncfs) __SYSCALL(__NR_setns, sys_setns) #define __NR_sendmmsg 269 __SC_COMP(__NR_sendmmsg, sys_sendmmsg, compat_sys_sendmmsg) +#define __NR_process_vm_readv 270 +__SC_COMP(__NR_process_vm_readv, sys_process_vm_readv, \ + compat_sys_process_vm_readv) +#define __NR_process_vm_writev 271 +__SC_COMP(__NR_process_vm_writev, sys_process_vm_writev, \ + compat_sys_process_vm_writev) #undef __NR_syscalls -#define __NR_syscalls 270 +#define __NR_syscalls 272 /* * All syscalls below here should go away really, diff --git a/include/linux/compat.h b/include/linux/compat.h index 154bf568301..66ed067fb72 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -552,5 +552,14 @@ extern ssize_t compat_rw_copy_check_uvector(int type, extern void __user *compat_alloc_user_space(unsigned long len); +asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, + const struct compat_iovec __user *lvec, + unsigned long liovcnt, const struct compat_iovec __user *rvec, + unsigned long riovcnt, unsigned long flags); +asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, + const struct compat_iovec __user *lvec, + unsigned long liovcnt, const struct compat_iovec __user *rvec, + unsigned long riovcnt, unsigned long flags); + #endif /* CONFIG_COMPAT */ #endif /* _LINUX_COMPAT_H */ -- cgit v1.2.3-70-g09d2 From 10c6db110d0eb4466b59812c49088ab56218fc2e Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Sat, 26 Nov 2011 02:47:31 +0100 Subject: perf: Fix loss of notification with multi-event When you do: $ perf record -e cycles,cycles,cycles noploop 10 You expect about 10,000 samples for each event, i.e., 10s at 1000samples/sec. However, this is not what's happening. You get much fewer samples, maybe 3700 samples/event: $ perf report -D | tail -15 Aggregated stats: TOTAL events: 10998 MMAP events: 66 COMM events: 2 SAMPLE events: 10930 cycles stats: TOTAL events: 3644 SAMPLE events: 3644 cycles stats: TOTAL events: 3642 SAMPLE events: 3642 cycles stats: TOTAL events: 3644 SAMPLE events: 3644 On a Intel Nehalem or even AMD64, there are 4 counters capable of measuring cycles, so there is plenty of space to measure those events without multiplexing (even with the NMI watchdog active). And even with multiplexing, we'd expect roughly the same number of samples per event. The root of the problem was that when the event that caused the buffer to become full was not the first event passed on the cmdline, the user notification would get lost. The notification was sent to the file descriptor of the overflowed event but the perf tool was not polling on it. The perf tool aggregates all samples into a single buffer, i.e., the buffer of the first event. Consequently, it assumes notifications for any event will come via that descriptor. The seemingly straight forward solution of moving the waitq into the ringbuffer object doesn't work because of life-time issues. One could perf_event_set_output() on a fd that you're also blocking on and cause the old rb object to be freed while its waitq would still be referenced by the blocked thread -> FAIL. Therefore link all events to the ringbuffer and broadcast the wakeup from the ringbuffer object to all possible events that could be waited upon. This is rather ugly, and we're open to better solutions but it works for now. Reported-by: Stephane Eranian Finished-by: Stephane Eranian Reviewed-by: Stephane Eranian Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/20111126014731.GA7030@quad Signed-off-by: Ingo Molnar --- include/linux/perf_event.h | 1 + kernel/events/core.c | 86 +++++++++++++++++++++++++++++++++++++++++++-- kernel/events/internal.h | 3 ++ kernel/events/ring_buffer.c | 3 ++ 4 files changed, 91 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 1e9ebe5e009..b1f89122bf6 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -822,6 +822,7 @@ struct perf_event { int mmap_locked; struct user_struct *mmap_user; struct ring_buffer *rb; + struct list_head rb_entry; /* poll related */ wait_queue_head_t waitq; diff --git a/kernel/events/core.c b/kernel/events/core.c index b0c1186fd97..600c1629b64 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -185,6 +185,9 @@ static void cpu_ctx_sched_in(struct perf_cpu_context *cpuctx, static void update_context_time(struct perf_event_context *ctx); static u64 perf_event_time(struct perf_event *event); +static void ring_buffer_attach(struct perf_event *event, + struct ring_buffer *rb); + void __weak perf_event_print_debug(void) { } extern __weak const char *perf_pmu_name(void) @@ -3191,12 +3194,33 @@ static unsigned int perf_poll(struct file *file, poll_table *wait) struct ring_buffer *rb; unsigned int events = POLL_HUP; + /* + * Race between perf_event_set_output() and perf_poll(): perf_poll() + * grabs the rb reference but perf_event_set_output() overrides it. + * Here is the timeline for two threads T1, T2: + * t0: T1, rb = rcu_dereference(event->rb) + * t1: T2, old_rb = event->rb + * t2: T2, event->rb = new rb + * t3: T2, ring_buffer_detach(old_rb) + * t4: T1, ring_buffer_attach(rb1) + * t5: T1, poll_wait(event->waitq) + * + * To avoid this problem, we grab mmap_mutex in perf_poll() + * thereby ensuring that the assignment of the new ring buffer + * and the detachment of the old buffer appear atomic to perf_poll() + */ + mutex_lock(&event->mmap_mutex); + rcu_read_lock(); rb = rcu_dereference(event->rb); - if (rb) + if (rb) { + ring_buffer_attach(event, rb); events = atomic_xchg(&rb->poll, 0); + } rcu_read_unlock(); + mutex_unlock(&event->mmap_mutex); + poll_wait(file, &event->waitq, wait); return events; @@ -3497,6 +3521,49 @@ unlock: return ret; } +static void ring_buffer_attach(struct perf_event *event, + struct ring_buffer *rb) +{ + unsigned long flags; + + if (!list_empty(&event->rb_entry)) + return; + + spin_lock_irqsave(&rb->event_lock, flags); + if (!list_empty(&event->rb_entry)) + goto unlock; + + list_add(&event->rb_entry, &rb->event_list); +unlock: + spin_unlock_irqrestore(&rb->event_lock, flags); +} + +static void ring_buffer_detach(struct perf_event *event, + struct ring_buffer *rb) +{ + unsigned long flags; + + if (list_empty(&event->rb_entry)) + return; + + spin_lock_irqsave(&rb->event_lock, flags); + list_del_init(&event->rb_entry); + wake_up_all(&event->waitq); + spin_unlock_irqrestore(&rb->event_lock, flags); +} + +static void ring_buffer_wakeup(struct perf_event *event) +{ + struct ring_buffer *rb; + + rcu_read_lock(); + rb = rcu_dereference(event->rb); + list_for_each_entry_rcu(event, &rb->event_list, rb_entry) { + wake_up_all(&event->waitq); + } + rcu_read_unlock(); +} + static void rb_free_rcu(struct rcu_head *rcu_head) { struct ring_buffer *rb; @@ -3522,9 +3589,19 @@ static struct ring_buffer *ring_buffer_get(struct perf_event *event) static void ring_buffer_put(struct ring_buffer *rb) { + struct perf_event *event, *n; + unsigned long flags; + if (!atomic_dec_and_test(&rb->refcount)) return; + spin_lock_irqsave(&rb->event_lock, flags); + list_for_each_entry_safe(event, n, &rb->event_list, rb_entry) { + list_del_init(&event->rb_entry); + wake_up_all(&event->waitq); + } + spin_unlock_irqrestore(&rb->event_lock, flags); + call_rcu(&rb->rcu_head, rb_free_rcu); } @@ -3547,6 +3624,7 @@ static void perf_mmap_close(struct vm_area_struct *vma) atomic_long_sub((size >> PAGE_SHIFT) + 1, &user->locked_vm); vma->vm_mm->pinned_vm -= event->mmap_locked; rcu_assign_pointer(event->rb, NULL); + ring_buffer_detach(event, rb); mutex_unlock(&event->mmap_mutex); ring_buffer_put(rb); @@ -3701,7 +3779,7 @@ static const struct file_operations perf_fops = { void perf_event_wakeup(struct perf_event *event) { - wake_up_all(&event->waitq); + ring_buffer_wakeup(event); if (event->pending_kill) { kill_fasync(&event->fasync, SIGIO, event->pending_kill); @@ -5823,6 +5901,8 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu, INIT_LIST_HEAD(&event->group_entry); INIT_LIST_HEAD(&event->event_entry); INIT_LIST_HEAD(&event->sibling_list); + INIT_LIST_HEAD(&event->rb_entry); + init_waitqueue_head(&event->waitq); init_irq_work(&event->pending, perf_pending_event); @@ -6029,6 +6109,8 @@ set: old_rb = event->rb; rcu_assign_pointer(event->rb, rb); + if (old_rb) + ring_buffer_detach(event, old_rb); ret = 0; unlock: mutex_unlock(&event->mmap_mutex); diff --git a/kernel/events/internal.h b/kernel/events/internal.h index 09097dd8116..64568a69937 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -22,6 +22,9 @@ struct ring_buffer { local_t lost; /* nr records lost */ long watermark; /* wakeup watermark */ + /* poll crap */ + spinlock_t event_lock; + struct list_head event_list; struct perf_event_mmap_page *user_page; void *data_pages[0]; diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index a2a29205cc0..7f3011c6b57 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -209,6 +209,9 @@ ring_buffer_init(struct ring_buffer *rb, long watermark, int flags) rb->writable = 1; atomic_set(&rb->refcount, 1); + + INIT_LIST_HEAD(&rb->event_list); + spin_lock_init(&rb->event_lock); } #ifndef CONFIG_PERF_USE_VMALLOC -- cgit v1.2.3-70-g09d2 From f62ef5f3e9cff065aa845e2b7f487e1810b8e57e Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Fri, 2 Dec 2011 08:21:43 +0100 Subject: x86, amd: Fix up numa_node information for AMD CPU family 15h model 0-0fh northbridge functions I've received complaints that the numa_node attribute for family 15h model 00-0fh (e.g. Interlagos) northbridge functions shows -1 instead of the proper node ID. Correct this with attached quirks (similar to quirks for other AMD CPU families used in multi-socket systems). Signed-off-by: Andreas Herrmann Cc: Frank Arnold Cc: Borislav Petkov Link: http://lkml.kernel.org/r/20111202072143.GA31916@alberich.amd.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/quirks.c | 13 +++++++++++++ include/linux/pci_ids.h | 4 ++++ 2 files changed, 17 insertions(+) (limited to 'include/linux') diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c index b78643d0f9a..03920a15a63 100644 --- a/arch/x86/kernel/quirks.c +++ b/arch/x86/kernel/quirks.c @@ -553,4 +553,17 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_10H_NB_MISC, quirk_amd_nb_node); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_10H_NB_LINK, quirk_amd_nb_node); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F0, + quirk_amd_nb_node); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F1, + quirk_amd_nb_node); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F2, + quirk_amd_nb_node); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F3, + quirk_amd_nb_node); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F4, + quirk_amd_nb_node); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F5, + quirk_amd_nb_node); + #endif diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 172ba70306d..2aaee0ca9da 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -517,8 +517,12 @@ #define PCI_DEVICE_ID_AMD_11H_NB_DRAM 0x1302 #define PCI_DEVICE_ID_AMD_11H_NB_MISC 0x1303 #define PCI_DEVICE_ID_AMD_11H_NB_LINK 0x1304 +#define PCI_DEVICE_ID_AMD_15H_NB_F0 0x1600 +#define PCI_DEVICE_ID_AMD_15H_NB_F1 0x1601 +#define PCI_DEVICE_ID_AMD_15H_NB_F2 0x1602 #define PCI_DEVICE_ID_AMD_15H_NB_F3 0x1603 #define PCI_DEVICE_ID_AMD_15H_NB_F4 0x1604 +#define PCI_DEVICE_ID_AMD_15H_NB_F5 0x1605 #define PCI_DEVICE_ID_AMD_CNB17H_F3 0x1703 #define PCI_DEVICE_ID_AMD_LANCE 0x2000 #define PCI_DEVICE_ID_AMD_LANCE_HOME 0x2001 -- cgit v1.2.3-70-g09d2 From 27b14b56af081ec7edeefb3a38b2c9577cc5ef48 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Tue, 1 Nov 2011 09:09:35 +0800 Subject: tracing: Restore system filter behavior Though not all events have field 'prev_pid', it was allowed to do this: # echo 'prev_pid == 100' > events/sched/filter but commit 75b8e98263fdb0bfbdeba60d4db463259f1fe8a2 (tracing/filter: Swap entire filter of events) broke it without any reason. Link: http://lkml.kernel.org/r/4EAF46CF.8040408@cn.fujitsu.com Signed-off-by: Li Zefan Signed-off-by: Steven Rostedt --- include/linux/ftrace_event.h | 2 ++ kernel/trace/trace_events_filter.c | 7 ++++++- 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 96efa6794ea..c3da42dd22b 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h @@ -172,6 +172,7 @@ enum { TRACE_EVENT_FL_FILTERED_BIT, TRACE_EVENT_FL_RECORDED_CMD_BIT, TRACE_EVENT_FL_CAP_ANY_BIT, + TRACE_EVENT_FL_NO_SET_FILTER_BIT, }; enum { @@ -179,6 +180,7 @@ enum { TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT), TRACE_EVENT_FL_RECORDED_CMD = (1 << TRACE_EVENT_FL_RECORDED_CMD_BIT), TRACE_EVENT_FL_CAP_ANY = (1 << TRACE_EVENT_FL_CAP_ANY_BIT), + TRACE_EVENT_FL_NO_SET_FILTER = (1 << TRACE_EVENT_FL_NO_SET_FILTER_BIT), }; struct ftrace_event_call { diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index d6e7926dcd2..95dc31efd6d 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -1649,7 +1649,9 @@ static int replace_system_preds(struct event_subsystem *system, */ err = replace_preds(call, NULL, ps, filter_string, true); if (err) - goto fail; + call->flags |= TRACE_EVENT_FL_NO_SET_FILTER; + else + call->flags &= ~TRACE_EVENT_FL_NO_SET_FILTER; } list_for_each_entry(call, &ftrace_events, list) { @@ -1658,6 +1660,9 @@ static int replace_system_preds(struct event_subsystem *system, if (strcmp(call->class->system, system->name) != 0) continue; + if (call->flags & TRACE_EVENT_FL_NO_SET_FILTER) + continue; + filter_item = kzalloc(sizeof(*filter_item), GFP_KERNEL); if (!filter_item) goto fail_mem; -- cgit v1.2.3-70-g09d2 From 02125a826459a6ad142f8d91c5b6357562f96615 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Dec 2011 08:43:34 -0500 Subject: fix apparmor dereferencing potentially freed dentry, sanitize __d_path() API __d_path() API is asking for trouble and in case of apparmor d_namespace_path() getting just that. The root cause is that when __d_path() misses the root it had been told to look for, it stores the location of the most remote ancestor in *root. Without grabbing references. Sure, at the moment of call it had been pinned down by what we have in *path. And if we raced with umount -l, we could have very well stopped at vfsmount/dentry that got freed as soon as prepend_path() dropped vfsmount_lock. It is safe to compare these pointers with pre-existing (and known to be still alive) vfsmount and dentry, as long as all we are asking is "is it the same address?". Dereferencing is not safe and apparmor ended up stepping into that. d_namespace_path() really wants to examine the place where we stopped, even if it's not connected to our namespace. As the result, it looked at ->d_sb->s_magic of a dentry that might've been already freed by that point. All other callers had been careful enough to avoid that, but it's really a bad interface - it invites that kind of trouble. The fix is fairly straightforward, even though it's bigger than I'd like: * prepend_path() root argument becomes const. * __d_path() is never called with NULL/NULL root. It was a kludge to start with. Instead, we have an explicit function - d_absolute_root(). Same as __d_path(), except that it doesn't get root passed and stops where it stops. apparmor and tomoyo are using it. * __d_path() returns NULL on path outside of root. The main caller is show_mountinfo() and that's precisely what we pass root for - to skip those outside chroot jail. Those who don't want that can (and do) use d_path(). * __d_path() root argument becomes const. Everyone agrees, I hope. * apparmor does *NOT* try to use __d_path() or any of its variants when it sees that path->mnt is an internal vfsmount. In that case it's definitely not mounted anywhere and dentry_path() is exactly what we want there. Handling of sysctl()-triggered weirdness is moved to that place. * if apparmor is asked to do pathname relative to chroot jail and __d_path() tells it we it's not in that jail, the sucker just calls d_absolute_path() instead. That's the other remaining caller of __d_path(), BTW. * seq_path_root() does _NOT_ return -ENAMETOOLONG (it's stupid anyway - the normal seq_file logics will take care of growing the buffer and redoing the call of ->show() just fine). However, if it gets path not reachable from root, it returns SEQ_SKIP. The only caller adjusted (i.e. stopped ignoring the return value as it used to do). Reviewed-by: John Johansen ACKed-by: John Johansen Signed-off-by: Al Viro Cc: stable@vger.kernel.org --- fs/dcache.c | 71 ++++++++++++++++++++++++++++------------------ fs/namespace.c | 20 +++++++------ fs/seq_file.c | 6 ++-- include/linux/dcache.h | 3 +- include/linux/fs.h | 1 + security/apparmor/path.c | 65 ++++++++++++++++++++++++------------------ security/tomoyo/realpath.c | 3 +- 7 files changed, 100 insertions(+), 69 deletions(-) (limited to 'include/linux') diff --git a/fs/dcache.c b/fs/dcache.c index 10ba92def3f..89509b5a090 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2439,16 +2439,14 @@ static int prepend_name(char **buffer, int *buflen, struct qstr *name) /** * prepend_path - Prepend path string to a buffer * @path: the dentry/vfsmount to report - * @root: root vfsmnt/dentry (may be modified by this function) + * @root: root vfsmnt/dentry * @buffer: pointer to the end of the buffer * @buflen: pointer to buffer length * * Caller holds the rename_lock. - * - * If path is not reachable from the supplied root, then the value of - * root is changed (without modifying refcounts). */ -static int prepend_path(const struct path *path, struct path *root, +static int prepend_path(const struct path *path, + const struct path *root, char **buffer, int *buflen) { struct dentry *dentry = path->dentry; @@ -2483,10 +2481,10 @@ static int prepend_path(const struct path *path, struct path *root, dentry = parent; } -out: if (!error && !slash) error = prepend(buffer, buflen, "/", 1); +out: br_read_unlock(vfsmount_lock); return error; @@ -2500,15 +2498,17 @@ global_root: WARN(1, "Root dentry has weird name <%.*s>\n", (int) dentry->d_name.len, dentry->d_name.name); } - root->mnt = vfsmnt; - root->dentry = dentry; + if (!slash) + error = prepend(buffer, buflen, "/", 1); + if (!error) + error = vfsmnt->mnt_ns ? 1 : 2; goto out; } /** * __d_path - return the path of a dentry * @path: the dentry/vfsmount to report - * @root: root vfsmnt/dentry (may be modified by this function) + * @root: root vfsmnt/dentry * @buf: buffer to return value in * @buflen: buffer length * @@ -2519,10 +2519,10 @@ global_root: * * "buflen" should be positive. * - * If path is not reachable from the supplied root, then the value of - * root is changed (without modifying refcounts). + * If the path is not reachable from the supplied root, return %NULL. */ -char *__d_path(const struct path *path, struct path *root, +char *__d_path(const struct path *path, + const struct path *root, char *buf, int buflen) { char *res = buf + buflen; @@ -2533,7 +2533,28 @@ char *__d_path(const struct path *path, struct path *root, error = prepend_path(path, root, &res, &buflen); write_sequnlock(&rename_lock); - if (error) + if (error < 0) + return ERR_PTR(error); + if (error > 0) + return NULL; + return res; +} + +char *d_absolute_path(const struct path *path, + char *buf, int buflen) +{ + struct path root = {}; + char *res = buf + buflen; + int error; + + prepend(&res, &buflen, "\0", 1); + write_seqlock(&rename_lock); + error = prepend_path(path, &root, &res, &buflen); + write_sequnlock(&rename_lock); + + if (error > 1) + error = -EINVAL; + if (error < 0) return ERR_PTR(error); return res; } @@ -2541,8 +2562,9 @@ char *__d_path(const struct path *path, struct path *root, /* * same as __d_path but appends "(deleted)" for unlinked files. */ -static int path_with_deleted(const struct path *path, struct path *root, - char **buf, int *buflen) +static int path_with_deleted(const struct path *path, + const struct path *root, + char **buf, int *buflen) { prepend(buf, buflen, "\0", 1); if (d_unlinked(path->dentry)) { @@ -2579,7 +2601,6 @@ char *d_path(const struct path *path, char *buf, int buflen) { char *res = buf + buflen; struct path root; - struct path tmp; int error; /* @@ -2594,9 +2615,8 @@ char *d_path(const struct path *path, char *buf, int buflen) get_fs_root(current->fs, &root); write_seqlock(&rename_lock); - tmp = root; - error = path_with_deleted(path, &tmp, &res, &buflen); - if (error) + error = path_with_deleted(path, &root, &res, &buflen); + if (error < 0) res = ERR_PTR(error); write_sequnlock(&rename_lock); path_put(&root); @@ -2617,7 +2637,6 @@ char *d_path_with_unreachable(const struct path *path, char *buf, int buflen) { char *res = buf + buflen; struct path root; - struct path tmp; int error; if (path->dentry->d_op && path->dentry->d_op->d_dname) @@ -2625,9 +2644,8 @@ char *d_path_with_unreachable(const struct path *path, char *buf, int buflen) get_fs_root(current->fs, &root); write_seqlock(&rename_lock); - tmp = root; - error = path_with_deleted(path, &tmp, &res, &buflen); - if (!error && !path_equal(&tmp, &root)) + error = path_with_deleted(path, &root, &res, &buflen); + if (error > 0) error = prepend_unreachable(&res, &buflen); write_sequnlock(&rename_lock); path_put(&root); @@ -2758,19 +2776,18 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size) write_seqlock(&rename_lock); if (!d_unlinked(pwd.dentry)) { unsigned long len; - struct path tmp = root; char *cwd = page + PAGE_SIZE; int buflen = PAGE_SIZE; prepend(&cwd, &buflen, "\0", 1); - error = prepend_path(&pwd, &tmp, &cwd, &buflen); + error = prepend_path(&pwd, &root, &cwd, &buflen); write_sequnlock(&rename_lock); - if (error) + if (error < 0) goto out; /* Unreachable from current root */ - if (!path_equal(&tmp, &root)) { + if (error > 0) { error = prepend_unreachable(&cwd, &buflen); if (error) goto out; diff --git a/fs/namespace.c b/fs/namespace.c index 6d3a1963879..cfc6d4448aa 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1048,15 +1048,12 @@ static int show_mountinfo(struct seq_file *m, void *v) if (err) goto out; seq_putc(m, ' '); - seq_path_root(m, &mnt_path, &root, " \t\n\\"); - if (root.mnt != p->root.mnt || root.dentry != p->root.dentry) { - /* - * Mountpoint is outside root, discard that one. Ugly, - * but less so than trying to do that in iterator in a - * race-free way (due to renames). - */ - return SEQ_SKIP; - } + + /* mountpoints outside of chroot jail will give SEQ_SKIP on this */ + err = seq_path_root(m, &mnt_path, &root, " \t\n\\"); + if (err) + goto out; + seq_puts(m, mnt->mnt_flags & MNT_READONLY ? " ro" : " rw"); show_mnt_opts(m, mnt); @@ -2776,3 +2773,8 @@ void kern_unmount(struct vfsmount *mnt) } } EXPORT_SYMBOL(kern_unmount); + +bool our_mnt(struct vfsmount *mnt) +{ + return check_mnt(mnt); +} diff --git a/fs/seq_file.c b/fs/seq_file.c index 05d6b0e78c9..dba43c3ea3a 100644 --- a/fs/seq_file.c +++ b/fs/seq_file.c @@ -449,8 +449,6 @@ EXPORT_SYMBOL(seq_path); /* * Same as seq_path, but relative to supplied root. - * - * root may be changed, see __d_path(). */ int seq_path_root(struct seq_file *m, struct path *path, struct path *root, char *esc) @@ -463,6 +461,8 @@ int seq_path_root(struct seq_file *m, struct path *path, struct path *root, char *p; p = __d_path(path, root, buf, size); + if (!p) + return SEQ_SKIP; res = PTR_ERR(p); if (!IS_ERR(p)) { char *end = mangle_path(buf, p, esc); @@ -474,7 +474,7 @@ int seq_path_root(struct seq_file *m, struct path *path, struct path *root, } seq_commit(m, res); - return res < 0 ? res : 0; + return res < 0 && res != -ENAMETOOLONG ? res : 0; } /* diff --git a/include/linux/dcache.h b/include/linux/dcache.h index 4df92619936..ed9f74f6c51 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -339,7 +339,8 @@ extern int d_validate(struct dentry *, struct dentry *); */ extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...); -extern char *__d_path(const struct path *path, struct path *root, char *, int); +extern char *__d_path(const struct path *, const struct path *, char *, int); +extern char *d_absolute_path(const struct path *, char *, int); extern char *d_path(const struct path *, char *, int); extern char *d_path_with_unreachable(const struct path *, char *, int); extern char *dentry_path_raw(struct dentry *, char *, int); diff --git a/include/linux/fs.h b/include/linux/fs.h index e3130220ce3..019dc558df1 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1942,6 +1942,7 @@ extern int fd_statfs(int, struct kstatfs *); extern int statfs_by_dentry(struct dentry *, struct kstatfs *); extern int freeze_super(struct super_block *super); extern int thaw_super(struct super_block *super); +extern bool our_mnt(struct vfsmount *mnt); extern int current_umask(void); diff --git a/security/apparmor/path.c b/security/apparmor/path.c index 36cc0cc39e7..b566eba4a65 100644 --- a/security/apparmor/path.c +++ b/security/apparmor/path.c @@ -57,23 +57,44 @@ static int prepend(char **buffer, int buflen, const char *str, int namelen) static int d_namespace_path(struct path *path, char *buf, int buflen, char **name, int flags) { - struct path root, tmp; char *res; - int connected, error = 0; + int error = 0; + int connected = 1; + + if (path->mnt->mnt_flags & MNT_INTERNAL) { + /* it's not mounted anywhere */ + res = dentry_path(path->dentry, buf, buflen); + *name = res; + if (IS_ERR(res)) { + *name = buf; + return PTR_ERR(res); + } + if (path->dentry->d_sb->s_magic == PROC_SUPER_MAGIC && + strncmp(*name, "/sys/", 5) == 0) { + /* TODO: convert over to using a per namespace + * control instead of hard coded /proc + */ + return prepend(name, *name - buf, "/proc", 5); + } + return 0; + } - /* Get the root we want to resolve too, released below */ + /* resolve paths relative to chroot?*/ if (flags & PATH_CHROOT_REL) { - /* resolve paths relative to chroot */ + struct path root; get_fs_root(current->fs, &root); - } else { - /* resolve paths relative to namespace */ - root.mnt = current->nsproxy->mnt_ns->root; - root.dentry = root.mnt->mnt_root; - path_get(&root); + res = __d_path(path, &root, buf, buflen); + if (res && !IS_ERR(res)) { + /* everything's fine */ + *name = res; + path_put(&root); + goto ok; + } + path_put(&root); + connected = 0; } - tmp = root; - res = __d_path(path, &tmp, buf, buflen); + res = d_absolute_path(path, buf, buflen); *name = res; /* handle error conditions - and still allow a partial path to @@ -84,7 +105,10 @@ static int d_namespace_path(struct path *path, char *buf, int buflen, *name = buf; goto out; } + if (!our_mnt(path->mnt)) + connected = 0; +ok: /* Handle two cases: * 1. A deleted dentry && profile is not allowing mediation of deleted * 2. On some filesystems, newly allocated dentries appear to the @@ -97,10 +121,7 @@ static int d_namespace_path(struct path *path, char *buf, int buflen, goto out; } - /* Determine if the path is connected to the expected root */ - connected = tmp.dentry == root.dentry && tmp.mnt == root.mnt; - - /* If the path is not connected, + /* If the path is not connected to the expected root, * check if it is a sysctl and handle specially else remove any * leading / that __d_path may have returned. * Unless @@ -112,17 +133,9 @@ static int d_namespace_path(struct path *path, char *buf, int buflen, * namespace root. */ if (!connected) { - /* is the disconnect path a sysctl? */ - if (tmp.dentry->d_sb->s_magic == PROC_SUPER_MAGIC && - strncmp(*name, "/sys/", 5) == 0) { - /* TODO: convert over to using a per namespace - * control instead of hard coded /proc - */ - error = prepend(name, *name - buf, "/proc", 5); - } else if (!(flags & PATH_CONNECT_PATH) && + if (!(flags & PATH_CONNECT_PATH) && !(((flags & CHROOT_NSCONNECT) == CHROOT_NSCONNECT) && - (tmp.mnt == current->nsproxy->mnt_ns->root && - tmp.dentry == tmp.mnt->mnt_root))) { + our_mnt(path->mnt))) { /* disconnected path, don't return pathname starting * with '/' */ @@ -133,8 +146,6 @@ static int d_namespace_path(struct path *path, char *buf, int buflen, } out: - path_put(&root); - return error; } diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c index 738bbdf8d4c..36fa7c9bedc 100644 --- a/security/tomoyo/realpath.c +++ b/security/tomoyo/realpath.c @@ -101,9 +101,8 @@ static char *tomoyo_get_absolute_path(struct path *path, char * const buffer, { char *pos = ERR_PTR(-ENOMEM); if (buflen >= 256) { - struct path ns_root = { }; /* go to whatever namespace root we are under */ - pos = __d_path(path, &ns_root, buffer, buflen - 1); + pos = d_absolute_path(path, buffer, buflen - 1); if (!IS_ERR(pos) && *pos == '/' && pos[1]) { struct inode *inode = path->dentry->d_inode; if (inode && S_ISDIR(inode->i_mode)) { -- cgit v1.2.3-70-g09d2 From 83aeeada7c69f35e5100b27ec354335597a7a488 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Thu, 8 Dec 2011 14:33:54 -0800 Subject: vmscan: use atomic-long for shrinker batching Use atomic-long operations instead of looping around cmpxchg(). [akpm@linux-foundation.org: massage atomic.h inclusions] Signed-off-by: Konstantin Khlebnikov Cc: Dave Chinner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/fs.h | 2 +- include/linux/mm.h | 1 + include/linux/shrinker.h | 2 +- mm/vmscan.c | 17 +++++++---------- 4 files changed, 10 insertions(+), 12 deletions(-) (limited to 'include/linux') diff --git a/include/linux/fs.h b/include/linux/fs.h index 019dc558df1..e0bc4ffb8e7 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -393,8 +393,8 @@ struct inodes_stat_t { #include #include #include -#include #include +#include #include diff --git a/include/linux/mm.h b/include/linux/mm.h index 3dc3a8c2c48..4baadd18f4a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h index a83833a1f7a..07ceb97d53f 100644 --- a/include/linux/shrinker.h +++ b/include/linux/shrinker.h @@ -35,7 +35,7 @@ struct shrinker { /* These are for internal use */ struct list_head list; - long nr; /* objs pending delete */ + atomic_long_t nr_in_batch; /* objs pending delete */ }; #define DEFAULT_SEEKS 2 /* A good number if you don't know better. */ extern void register_shrinker(struct shrinker *); diff --git a/mm/vmscan.c b/mm/vmscan.c index f5255442ae2..f54a05b7a61 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -183,7 +183,7 @@ static unsigned long zone_nr_lru_pages(struct zone *zone, */ void register_shrinker(struct shrinker *shrinker) { - shrinker->nr = 0; + atomic_long_set(&shrinker->nr_in_batch, 0); down_write(&shrinker_rwsem); list_add_tail(&shrinker->list, &shrinker_list); up_write(&shrinker_rwsem); @@ -264,9 +264,7 @@ unsigned long shrink_slab(struct shrink_control *shrink, * and zero it so that other concurrent shrinker invocations * don't also do this scanning work. */ - do { - nr = shrinker->nr; - } while (cmpxchg(&shrinker->nr, nr, 0) != nr); + nr = atomic_long_xchg(&shrinker->nr_in_batch, 0); total_scan = nr; delta = (4 * nr_pages_scanned) / shrinker->seeks; @@ -328,12 +326,11 @@ unsigned long shrink_slab(struct shrink_control *shrink, * manner that handles concurrent updates. If we exhausted the * scan, there is no need to do an update. */ - do { - nr = shrinker->nr; - new_nr = total_scan + nr; - if (total_scan <= 0) - break; - } while (cmpxchg(&shrinker->nr, nr, new_nr) != nr); + if (total_scan > 0) + new_nr = atomic_long_add_return(total_scan, + &shrinker->nr_in_batch); + else + new_nr = atomic_long_read(&shrinker->nr_in_batch); trace_mm_shrink_slab_end(shrinker, shrink_ret, nr, new_nr); } -- cgit v1.2.3-70-g09d2