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-rw-r--r--arch/powerpc/platforms/pseries/Kconfig1
-rw-r--r--arch/powerpc/platforms/pseries/dlpar.c4
-rw-r--r--arch/powerpc/platforms/pseries/eeh.c4
-rw-r--r--arch/powerpc/platforms/pseries/eeh_event.c1
-rw-r--r--arch/powerpc/platforms/pseries/eeh_sysfs.c1
-rw-r--r--arch/powerpc/platforms/pseries/hotplug-cpu.c1
-rw-r--r--arch/powerpc/platforms/pseries/hvconsole.c3
-rw-r--r--arch/powerpc/platforms/pseries/io_event_irq.c2
-rw-r--r--arch/powerpc/platforms/pseries/iommu.c35
-rw-r--r--arch/powerpc/platforms/pseries/lpar.c1
-rw-r--r--arch/powerpc/platforms/pseries/mobility.c1
-rw-r--r--arch/powerpc/platforms/pseries/nvram.c171
-rw-r--r--arch/powerpc/platforms/pseries/pci_dlpar.c1
-rw-r--r--arch/powerpc/platforms/pseries/plpar_wrappers.h3
-rw-r--r--arch/powerpc/platforms/pseries/setup.c2
-rw-r--r--arch/powerpc/platforms/pseries/smp.c1
-rw-r--r--arch/powerpc/platforms/pseries/suspend.c1
17 files changed, 219 insertions, 14 deletions
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index 05cf4769b88..c81f6bb9c10 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -15,6 +15,7 @@ config PPC_PSERIES
select PPC_UDBG_16550
select PPC_NATIVE
select PPC_PCI_CHOICE if EXPERT
+ select ZLIB_DEFLATE
default y
config PPC_SPLPAR
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index e9be25bc571..0f1b706506e 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -112,6 +112,7 @@ void dlpar_free_cc_nodes(struct device_node *dn)
dlpar_free_one_cc_node(dn);
}
+#define COMPLETE 0
#define NEXT_SIBLING 1
#define NEXT_CHILD 2
#define NEXT_PROPERTY 3
@@ -158,6 +159,9 @@ struct device_node *dlpar_configure_connector(u32 drc_index)
spin_unlock(&rtas_data_buf_lock);
switch (rc) {
+ case COMPLETE:
+ break;
+
case NEXT_SIBLING:
dn = dlpar_parse_cc_node(ccwa);
if (!dn)
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index ada6e07532e..565869022e3 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -22,6 +22,7 @@
*/
#include <linux/delay.h>
+#include <linux/sched.h> /* for init_mm */
#include <linux/init.h>
#include <linux/list.h>
#include <linux/pci.h>
@@ -29,6 +30,7 @@
#include <linux/rbtree.h>
#include <linux/seq_file.h>
#include <linux/spinlock.h>
+#include <linux/export.h>
#include <linux/of.h>
#include <linux/atomic.h>
@@ -1338,7 +1340,7 @@ static const struct file_operations proc_eeh_operations = {
static int __init eeh_init_proc(void)
{
if (machine_is(pseries))
- proc_create("ppc64/eeh", 0, NULL, &proc_eeh_operations);
+ proc_create("powerpc/eeh", 0, NULL, &proc_eeh_operations);
return 0;
}
__initcall(eeh_init_proc);
diff --git a/arch/powerpc/platforms/pseries/eeh_event.c b/arch/powerpc/platforms/pseries/eeh_event.c
index 2ec500c130b..d2383cfb6df 100644
--- a/arch/powerpc/platforms/pseries/eeh_event.c
+++ b/arch/powerpc/platforms/pseries/eeh_event.c
@@ -21,6 +21,7 @@
#include <linux/delay.h>
#include <linux/list.h>
#include <linux/mutex.h>
+#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
diff --git a/arch/powerpc/platforms/pseries/eeh_sysfs.c b/arch/powerpc/platforms/pseries/eeh_sysfs.c
index 23982c7892d..eb744ee234d 100644
--- a/arch/powerpc/platforms/pseries/eeh_sysfs.c
+++ b/arch/powerpc/platforms/pseries/eeh_sysfs.c
@@ -23,6 +23,7 @@
* Send comments and feedback to Linas Vepstas <linas@austin.ibm.com>
*/
#include <linux/pci.h>
+#include <linux/stat.h>
#include <asm/ppc-pci.h>
#include <asm/pci-bridge.h>
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 83a3ca2fd28..c986d08d080 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -21,6 +21,7 @@
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
+#include <linux/sched.h> /* for idle_task_exit */
#include <linux/cpu.h>
#include <asm/system.h>
#include <asm/prom.h>
diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c
index 041e87ca189..b344f94b040 100644
--- a/arch/powerpc/platforms/pseries/hvconsole.c
+++ b/arch/powerpc/platforms/pseries/hvconsole.c
@@ -24,7 +24,8 @@
*/
#include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/errno.h>
#include <asm/hvcall.h>
#include <asm/hvconsole.h>
#include "plpar_wrappers.h"
diff --git a/arch/powerpc/platforms/pseries/io_event_irq.c b/arch/powerpc/platforms/pseries/io_event_irq.c
index 2c4dd1fb833..1a709bc48ce 100644
--- a/arch/powerpc/platforms/pseries/io_event_irq.c
+++ b/arch/powerpc/platforms/pseries/io_event_irq.c
@@ -9,7 +9,7 @@
#include <linux/errno.h>
#include <linux/slab.h>
-#include <linux/module.h>
+#include <linux/export.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/of.h>
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index 01faab9456c..b719d970973 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -29,6 +29,7 @@
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/spinlock.h>
+#include <linux/sched.h> /* for show_stack */
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
@@ -939,14 +940,14 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn)
if (ret) {
dev_info(&dev->dev, "failed to map direct window for %s: %d\n",
dn->full_name, ret);
- goto out_clear_window;
+ goto out_free_window;
}
ret = prom_add_property(pdn, win64);
if (ret) {
dev_err(&dev->dev, "unable to add dma window property for %s: %d",
pdn->full_name, ret);
- goto out_clear_window;
+ goto out_free_window;
}
window->device = pdn;
@@ -958,6 +959,9 @@ static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn)
dma_addr = of_read_number(&create.addr_hi, 2);
goto out_unlock;
+out_free_window:
+ kfree(window);
+
out_clear_window:
remove_ddw(pdn);
@@ -1077,12 +1081,38 @@ check_mask:
return 0;
}
+static u64 dma_get_required_mask_pSeriesLP(struct device *dev)
+{
+ if (!dev->dma_mask)
+ return 0;
+
+ if (!disable_ddw && dev_is_pci(dev)) {
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct device_node *dn;
+
+ dn = pci_device_to_OF_node(pdev);
+
+ /* search upwards for ibm,dma-window */
+ for (; dn && PCI_DN(dn) && !PCI_DN(dn)->iommu_table;
+ dn = dn->parent)
+ if (of_get_property(dn, "ibm,dma-window", NULL))
+ break;
+ /* if there is a ibm,ddw-applicable property require 64 bits */
+ if (dn && PCI_DN(dn) &&
+ of_get_property(dn, "ibm,ddw-applicable", NULL))
+ return DMA_BIT_MASK(64);
+ }
+
+ return dma_iommu_ops.get_required_mask(dev);
+}
+
#else /* CONFIG_PCI */
#define pci_dma_bus_setup_pSeries NULL
#define pci_dma_dev_setup_pSeries NULL
#define pci_dma_bus_setup_pSeriesLP NULL
#define pci_dma_dev_setup_pSeriesLP NULL
#define dma_set_mask_pSeriesLP NULL
+#define dma_get_required_mask_pSeriesLP NULL
#endif /* !CONFIG_PCI */
static int iommu_mem_notifier(struct notifier_block *nb, unsigned long action,
@@ -1186,6 +1216,7 @@ void iommu_init_early_pSeries(void)
ppc_md.pci_dma_bus_setup = pci_dma_bus_setup_pSeriesLP;
ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_pSeriesLP;
ppc_md.dma_set_mask = dma_set_mask_pSeriesLP;
+ ppc_md.dma_get_required_mask = dma_get_required_mask_pSeriesLP;
} else {
ppc_md.tce_build = tce_build_pSeries;
ppc_md.tce_free = tce_free_pSeries;
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index c9a29dae8c0..27a49508b41 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -25,6 +25,7 @@
#include <linux/kernel.h>
#include <linux/dma-mapping.h>
#include <linux/console.h>
+#include <linux/export.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/page.h>
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index 3e7f651e50a..029a562af37 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/kobject.h>
#include <linux/smp.h>
+#include <linux/stat.h>
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/delay.h>
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c
index 00cc3a09488..a76b22844d1 100644
--- a/arch/powerpc/platforms/pseries/nvram.c
+++ b/arch/powerpc/platforms/pseries/nvram.c
@@ -18,6 +18,8 @@
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/kmsg_dump.h>
+#include <linux/ctype.h>
+#include <linux/zlib.h>
#include <asm/uaccess.h>
#include <asm/nvram.h>
#include <asm/rtas.h>
@@ -78,8 +80,41 @@ static struct kmsg_dumper nvram_kmsg_dumper = {
#define NVRAM_RTAS_READ_TIMEOUT 5 /* seconds */
static unsigned long last_unread_rtas_event; /* timestamp */
-/* We preallocate oops_buf during init to avoid kmalloc during oops/panic. */
-static char *oops_buf;
+/*
+ * For capturing and compressing an oops or panic report...
+
+ * big_oops_buf[] holds the uncompressed text we're capturing.
+ *
+ * oops_buf[] holds the compressed text, preceded by a prefix.
+ * The prefix is just a u16 holding the length of the compressed* text.
+ * (*Or uncompressed, if compression fails.) oops_buf[] gets written
+ * to NVRAM.
+ *
+ * oops_len points to the prefix. oops_data points to the compressed text.
+ *
+ * +- oops_buf
+ * | +- oops_data
+ * v v
+ * +------------+-----------------------------------------------+
+ * | length | text |
+ * | (2 bytes) | (oops_data_sz bytes) |
+ * +------------+-----------------------------------------------+
+ * ^
+ * +- oops_len
+ *
+ * We preallocate these buffers during init to avoid kmalloc during oops/panic.
+ */
+static size_t big_oops_buf_sz;
+static char *big_oops_buf, *oops_buf;
+static u16 *oops_len;
+static char *oops_data;
+static size_t oops_data_sz;
+
+/* Compression parameters */
+#define COMPR_LEVEL 6
+#define WINDOW_BITS 12
+#define MEM_LEVEL 4
+static struct z_stream_s stream;
static ssize_t pSeries_nvram_read(char *buf, size_t count, loff_t *index)
{
@@ -387,11 +422,44 @@ static void __init nvram_init_oops_partition(int rtas_partition_exists)
sizeof(rtas_log_partition));
}
oops_buf = kmalloc(oops_log_partition.size, GFP_KERNEL);
+ if (!oops_buf) {
+ pr_err("nvram: No memory for %s partition\n",
+ oops_log_partition.name);
+ return;
+ }
+ oops_len = (u16*) oops_buf;
+ oops_data = oops_buf + sizeof(u16);
+ oops_data_sz = oops_log_partition.size - sizeof(u16);
+
+ /*
+ * Figure compression (preceded by elimination of each line's <n>
+ * severity prefix) will reduce the oops/panic report to at most
+ * 45% of its original size.
+ */
+ big_oops_buf_sz = (oops_data_sz * 100) / 45;
+ big_oops_buf = kmalloc(big_oops_buf_sz, GFP_KERNEL);
+ if (big_oops_buf) {
+ stream.workspace = kmalloc(zlib_deflate_workspacesize(
+ WINDOW_BITS, MEM_LEVEL), GFP_KERNEL);
+ if (!stream.workspace) {
+ pr_err("nvram: No memory for compression workspace; "
+ "skipping compression of %s partition data\n",
+ oops_log_partition.name);
+ kfree(big_oops_buf);
+ big_oops_buf = NULL;
+ }
+ } else {
+ pr_err("No memory for uncompressed %s data; "
+ "skipping compression\n", oops_log_partition.name);
+ stream.workspace = NULL;
+ }
+
rc = kmsg_dump_register(&nvram_kmsg_dumper);
if (rc != 0) {
pr_err("nvram: kmsg_dump_register() failed; returned %d\n", rc);
kfree(oops_buf);
- return;
+ kfree(big_oops_buf);
+ kfree(stream.workspace);
}
}
@@ -473,7 +541,83 @@ static int clobbering_unread_rtas_event(void)
NVRAM_RTAS_READ_TIMEOUT);
}
-/* our kmsg_dump callback */
+/* Squeeze out each line's <n> severity prefix. */
+static size_t elide_severities(char *buf, size_t len)
+{
+ char *in, *out, *buf_end = buf + len;
+ /* Assume a <n> at the very beginning marks the start of a line. */
+ int newline = 1;
+
+ in = out = buf;
+ while (in < buf_end) {
+ if (newline && in+3 <= buf_end &&
+ *in == '<' && isdigit(in[1]) && in[2] == '>') {
+ in += 3;
+ newline = 0;
+ } else {
+ newline = (*in == '\n');
+ *out++ = *in++;
+ }
+ }
+ return out - buf;
+}
+
+/* Derived from logfs_compress() */
+static int nvram_compress(const void *in, void *out, size_t inlen,
+ size_t outlen)
+{
+ int err, ret;
+
+ ret = -EIO;
+ err = zlib_deflateInit2(&stream, COMPR_LEVEL, Z_DEFLATED, WINDOW_BITS,
+ MEM_LEVEL, Z_DEFAULT_STRATEGY);
+ if (err != Z_OK)
+ goto error;
+
+ stream.next_in = in;
+ stream.avail_in = inlen;
+ stream.total_in = 0;
+ stream.next_out = out;
+ stream.avail_out = outlen;
+ stream.total_out = 0;
+
+ err = zlib_deflate(&stream, Z_FINISH);
+ if (err != Z_STREAM_END)
+ goto error;
+
+ err = zlib_deflateEnd(&stream);
+ if (err != Z_OK)
+ goto error;
+
+ if (stream.total_out >= stream.total_in)
+ goto error;
+
+ ret = stream.total_out;
+error:
+ return ret;
+}
+
+/* Compress the text from big_oops_buf into oops_buf. */
+static int zip_oops(size_t text_len)
+{
+ int zipped_len = nvram_compress(big_oops_buf, oops_data, text_len,
+ oops_data_sz);
+ if (zipped_len < 0) {
+ pr_err("nvram: compression failed; returned %d\n", zipped_len);
+ pr_err("nvram: logging uncompressed oops/panic report\n");
+ return -1;
+ }
+ *oops_len = (u16) zipped_len;
+ return 0;
+}
+
+/*
+ * This is our kmsg_dump callback, called after an oops or panic report
+ * has been written to the printk buffer. We want to capture as much
+ * of the printk buffer as possible. First, capture as much as we can
+ * that we think will compress sufficiently to fit in the lnx,oops-log
+ * partition. If that's too much, go back and capture uncompressed text.
+ */
static void oops_to_nvram(struct kmsg_dumper *dumper,
enum kmsg_dump_reason reason,
const char *old_msgs, unsigned long old_len,
@@ -482,6 +626,8 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
static unsigned int oops_count = 0;
static bool panicking = false;
size_t text_len;
+ unsigned int err_type = ERR_TYPE_KERNEL_PANIC_GZ;
+ int rc = -1;
switch (reason) {
case KMSG_DUMP_RESTART:
@@ -509,8 +655,19 @@ static void oops_to_nvram(struct kmsg_dumper *dumper,
if (clobbering_unread_rtas_event())
return;
- text_len = capture_last_msgs(old_msgs, old_len, new_msgs, new_len,
- oops_buf, oops_log_partition.size);
+ if (big_oops_buf) {
+ text_len = capture_last_msgs(old_msgs, old_len,
+ new_msgs, new_len, big_oops_buf, big_oops_buf_sz);
+ text_len = elide_severities(big_oops_buf, text_len);
+ rc = zip_oops(text_len);
+ }
+ if (rc != 0) {
+ text_len = capture_last_msgs(old_msgs, old_len,
+ new_msgs, new_len, oops_data, oops_data_sz);
+ err_type = ERR_TYPE_KERNEL_PANIC;
+ *oops_len = (u16) text_len;
+ }
+
(void) nvram_write_os_partition(&oops_log_partition, oops_buf,
- (int) text_len, ERR_TYPE_KERNEL_PANIC, ++oops_count);
+ (int) (sizeof(*oops_len) + *oops_len), err_type, ++oops_count);
}
diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 3bf4488aaec..55d4ec1bd1a 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -26,6 +26,7 @@
*/
#include <linux/pci.h>
+#include <linux/export.h>
#include <asm/pci-bridge.h>
#include <asm/ppc-pci.h>
#include <asm/firmware.h>
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index 41c24c146d6..342797fc0f9 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -1,7 +1,10 @@
#ifndef _PSERIES_PLPAR_WRAPPERS_H
#define _PSERIES_PLPAR_WRAPPERS_H
+#include <linux/string.h>
+
#include <asm/hvcall.h>
+#include <asm/paca.h>
#include <asm/page.h>
/* Get state of physical CPU from query_cpu_stopped */
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 0969fd98c4f..c3408ca8855 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -34,7 +34,7 @@
#include <linux/pci.h>
#include <linux/utsname.h>
#include <linux/adb.h>
-#include <linux/module.h>
+#include <linux/export.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 4e44c4dcd11..26e93fd4c62 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -14,7 +14,6 @@
#include <linux/kernel.h>
-#include <linux/module.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/interrupt.h>
diff --git a/arch/powerpc/platforms/pseries/suspend.c b/arch/powerpc/platforms/pseries/suspend.c
index a8ca289ff26..d3de0849f29 100644
--- a/arch/powerpc/platforms/pseries/suspend.c
+++ b/arch/powerpc/platforms/pseries/suspend.c
@@ -18,6 +18,7 @@
#include <linux/delay.h>
#include <linux/suspend.h>
+#include <linux/stat.h>
#include <asm/firmware.h>
#include <asm/hvcall.h>
#include <asm/machdep.h>
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-04 01:10:21 +0000