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authorThomas Gleixner <tglx@linutronix.de>2009-07-25 18:18:34 +0400
committerIngo Molnar <mingo@elte.hu>2011-09-13 13:12:05 +0400
commit2d21a29fb62f142b8a62496700d8d82a6a8fd783 (patch)
tree78d83ed47a72b1e31ecadb3f77e91f865b407b48 /drivers/oprofile/event_buffer.c
parent6b2c1800f1d3a608af952cfbd57f8f1a71c5d9b4 (diff)
downloadlinux-2d21a29fb62f142b8a62496700d8d82a6a8fd783.tar.xz
locking, oprofile: Annotate oprofilefs lock as raw
The oprofilefs_lock can be taken in atomic context (in profiling interrupts) and therefore cannot cannot be preempted on -rt - annotate it. In mainline this change documents the low level nature of the lock - otherwise there's no functional difference. Lockdep and Sparse checking will work as usual. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/oprofile/event_buffer.c')
-rw-r--r--drivers/oprofile/event_buffer.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
index dd87e86048be..c0cc4e7ff023 100644
--- a/drivers/oprofile/event_buffer.c
+++ b/drivers/oprofile/event_buffer.c
@@ -82,10 +82,10 @@ int alloc_event_buffer(void)
{
unsigned long flags;
- spin_lock_irqsave(&oprofilefs_lock, flags);
+ raw_spin_lock_irqsave(&oprofilefs_lock, flags);
buffer_size = oprofile_buffer_size;
buffer_watershed = oprofile_buffer_watershed;
- spin_unlock_irqrestore(&oprofilefs_lock, flags);
+ raw_spin_unlock_irqrestore(&oprofilefs_lock, flags);
if (buffer_watershed >= buffer_size)
return -EINVAL;