diff options
Diffstat (limited to 'arch/parisc/kernel/perf.c')
-rw-r--r-- | arch/parisc/kernel/perf.c | 45 |
1 files changed, 27 insertions, 18 deletions
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c index b3ad0a505b8..f6fec62b6a2 100644 --- a/arch/parisc/kernel/perf.c +++ b/arch/parisc/kernel/perf.c @@ -196,8 +196,7 @@ static int perf_open(struct inode *inode, struct file *file); static ssize_t perf_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos); static ssize_t perf_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos); -static int perf_ioctl(struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg); +static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg); static void perf_start_counters(void); static int perf_stop_counters(uint32_t *raddr); static struct rdr_tbl_ent * perf_rdr_get_entry(uint32_t rdr_num); @@ -438,48 +437,56 @@ static void perf_patch_images(void) * must be running on the processor that you wish to change. */ -static int perf_ioctl(struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg) +static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long error_start; - uint32_t raddr[4]; + uint32_t raddr[4]; + int error = 0; + lock_kernel(); switch (cmd) { case PA_PERF_ON: /* Start the counters */ perf_start_counters(); - return 0; + break; case PA_PERF_OFF: error_start = perf_stop_counters(raddr); if (error_start != 0) { printk(KERN_ERR "perf_off: perf_stop_counters = %ld\n", error_start); - return -EFAULT; + error = -EFAULT; + break; } /* copy out the Counters */ if (copy_to_user((void __user *)arg, raddr, sizeof (raddr)) != 0) { - return -EFAULT; + error = -EFAULT; + break; } - return 0; + break; case PA_PERF_VERSION: /* Return the version # */ - return put_user(PERF_VERSION, (int *)arg); + error = put_user(PERF_VERSION, (int *)arg); + break; default: - break; + error = -ENOTTY; } - return -ENOTTY; + + unlock_kernel(); + + return error; } static struct file_operations perf_fops = { .llseek = no_llseek, .read = perf_read, .write = perf_write, - .ioctl = perf_ioctl, + .unlocked_ioctl = perf_ioctl, + .compat_ioctl = perf_ioctl, .open = perf_open, .release = perf_release }; @@ -746,7 +753,8 @@ static int perf_write_image(uint64_t *memaddr) uint64_t *bptr; uint32_t dwords; uint32_t *intrigue_rdr; - uint64_t *intrigue_bitmask, tmp64, proc_hpa; + uint64_t *intrigue_bitmask, tmp64; + void __iomem *runway; struct rdr_tbl_ent *tentry; int i; @@ -798,15 +806,16 @@ static int perf_write_image(uint64_t *memaddr) return -1; } - proc_hpa = cpu_device->hpa; + runway = ioremap(cpu_device->hpa.start, 4096); /* Merge intrigue bits into Runway STATUS 0 */ - tmp64 = __raw_readq(proc_hpa + RUNWAY_STATUS) & 0xffecfffffffffffful; - __raw_writeq(tmp64 | (*memaddr++ & 0x0013000000000000ul), proc_hpa + RUNWAY_STATUS); + tmp64 = __raw_readq(runway + RUNWAY_STATUS) & 0xffecfffffffffffful; + __raw_writeq(tmp64 | (*memaddr++ & 0x0013000000000000ul), + runway + RUNWAY_STATUS); /* Write RUNWAY DEBUG registers */ for (i = 0; i < 8; i++) { - __raw_writeq(*memaddr++, proc_hpa + RUNWAY_DEBUG + i); + __raw_writeq(*memaddr++, runway + RUNWAY_DEBUG); } return 0; |