diff options
| -rw-r--r-- | drivers/oprofile/buffer_sync.c | 8 | ||||
| -rw-r--r-- | drivers/oprofile/event_buffer.c | 12 | ||||
| -rw-r--r-- | drivers/oprofile/event_buffer.h | 4 | ||||
| -rw-r--r-- | drivers/oprofile/oprof.c | 26 |
4 files changed, 25 insertions, 25 deletions
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c index b2e8e49..43e521e 100644 --- a/drivers/oprofile/buffer_sync.c +++ b/drivers/oprofile/buffer_sync.c @@ -108,10 +108,10 @@ static int module_load_notify(struct notifier_block * self, unsigned long val, v return 0; /* FIXME: should we process all CPU buffers ? */ - down(&buffer_sem); + mutex_lock(&buffer_mutex); add_event_entry(ESCAPE_CODE); add_event_entry(MODULE_LOADED_CODE); - up(&buffer_sem); + mutex_unlock(&buffer_mutex); #endif return 0; } @@ -501,7 +501,7 @@ void sync_buffer(int cpu) sync_buffer_state state = sb_buffer_start; unsigned long available; - down(&buffer_sem); + mutex_lock(&buffer_mutex); add_cpu_switch(cpu); @@ -550,5 +550,5 @@ void sync_buffer(int cpu) mark_done(cpu); - up(&buffer_sem); + mutex_unlock(&buffer_mutex); } diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c index b80318f..04d6417 100644 --- a/drivers/oprofile/event_buffer.c +++ b/drivers/oprofile/event_buffer.c @@ -24,7 +24,7 @@ #include "event_buffer.h" #include "oprofile_stats.h" -DECLARE_MUTEX(buffer_sem); +DEFINE_MUTEX(buffer_mutex); static unsigned long buffer_opened; static DECLARE_WAIT_QUEUE_HEAD(buffer_wait); @@ -32,7 +32,7 @@ static unsigned long * event_buffer; static unsigned long buffer_size; static unsigned long buffer_watershed; static size_t buffer_pos; -/* atomic_t because wait_event checks it outside of buffer_sem */ +/* atomic_t because wait_event checks it outside of buffer_mutex */ static atomic_t buffer_ready = ATOMIC_INIT(0); /* Add an entry to the event buffer. When we @@ -60,10 +60,10 @@ void add_event_entry(unsigned long value) */ void wake_up_buffer_waiter(void) { - down(&buffer_sem); + mutex_lock(&buffer_mutex); atomic_set(&buffer_ready, 1); wake_up(&buffer_wait); - up(&buffer_sem); + mutex_unlock(&buffer_mutex); } @@ -162,7 +162,7 @@ static ssize_t event_buffer_read(struct file * file, char __user * buf, if (!atomic_read(&buffer_ready)) return -EAGAIN; - down(&buffer_sem); + mutex_lock(&buffer_mutex); atomic_set(&buffer_ready, 0); @@ -177,7 +177,7 @@ static ssize_t event_buffer_read(struct file * file, char __user * buf, buffer_pos = 0; out: - up(&buffer_sem); + mutex_unlock(&buffer_mutex); return retval; } diff --git a/drivers/oprofile/event_buffer.h b/drivers/oprofile/event_buffer.h index 0180236..9241627 100644 --- a/drivers/oprofile/event_buffer.h +++ b/drivers/oprofile/event_buffer.h @@ -11,7 +11,7 @@ #define EVENT_BUFFER_H #include <linux/types.h> -#include <asm/semaphore.h> +#include <asm/mutex.h> int alloc_event_buffer(void); @@ -46,6 +46,6 @@ extern struct file_operations event_buffer_fops; /* mutex between sync_cpu_buffers() and the * file reading code. */ -extern struct semaphore buffer_sem; +extern struct mutex buffer_mutex; #endif /* EVENT_BUFFER_H */ diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c index b3f1cd6..e5162a6 100644 --- a/drivers/oprofile/oprof.c +++ b/drivers/oprofile/oprof.c @@ -12,7 +12,7 @@ #include <linux/init.h> #include <linux/oprofile.h> #include <linux/moduleparam.h> -#include <asm/semaphore.h> +#include <asm/mutex.h> #include "oprof.h" #include "event_buffer.h" @@ -25,7 +25,7 @@ struct oprofile_operations oprofile_ops; unsigned long oprofile_started; unsigned long backtrace_depth; static unsigned long is_setup; -static DECLARE_MUTEX(start_sem); +static DEFINE_MUTEX(start_mutex); /* timer 0 - use performance monitoring hardware if available @@ -37,7 +37,7 @@ int oprofile_setup(void) { int err; - down(&start_sem); + mutex_lock(&start_mutex); if ((err = alloc_cpu_buffers())) goto out; @@ -57,7 +57,7 @@ int oprofile_setup(void) goto out3; is_setup = 1; - up(&start_sem); + mutex_unlock(&start_mutex); return 0; out3: @@ -68,7 +68,7 @@ out2: out1: free_cpu_buffers(); out: - up(&start_sem); + mutex_unlock(&start_mutex); return err; } @@ -78,7 +78,7 @@ int oprofile_start(void) { int err = -EINVAL; - down(&start_sem); + mutex_lock(&start_mutex); if (!is_setup) goto out; @@ -95,7 +95,7 @@ int oprofile_start(void) oprofile_started = 1; out: - up(&start_sem); + mutex_unlock(&start_mutex); return err; } @@ -103,7 +103,7 @@ out: /* echo 0>/dev/oprofile/enable */ void oprofile_stop(void) { - down(&start_sem); + mutex_lock(&start_mutex); if (!oprofile_started) goto out; oprofile_ops.stop(); @@ -111,20 +111,20 @@ void oprofile_stop(void) /* wake up the daemon to read what remains */ wake_up_buffer_waiter(); out: - up(&start_sem); + mutex_unlock(&start_mutex); } void oprofile_shutdown(void) { - down(&start_sem); + mutex_lock(&start_mutex); sync_stop(); if (oprofile_ops.shutdown) oprofile_ops.shutdown(); is_setup = 0; free_event_buffer(); free_cpu_buffers(); - up(&start_sem); + mutex_unlock(&start_mutex); } @@ -132,7 +132,7 @@ int oprofile_set_backtrace(unsigned long val) { int err = 0; - down(&start_sem); + mutex_lock(&start_mutex); if (oprofile_started) { err = -EBUSY; @@ -147,7 +147,7 @@ int oprofile_set_backtrace(unsigned long val) backtrace_depth = val; out: - up(&start_sem); + mutex_unlock(&start_mutex); return err; } |