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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c
index e9ff6f7770be..d0de6cc2d7a5 100644
--- a/drivers/oprofile/oprofilefs.c
+++ b/drivers/oprofile/oprofilefs.c
@@ -21,7 +21,7 @@
 
 #define OPROFILEFS_MAGIC 0x6f70726f
 
-DEFINE_SPINLOCK(oprofilefs_lock);
+DEFINE_RAW_SPINLOCK(oprofilefs_lock);
 
 static struct inode *oprofilefs_get_inode(struct super_block *sb, int mode)
 {
@@ -76,9 +76,9 @@ int oprofilefs_ulong_from_user(unsigned long *val, char const __user *buf, size_
         if (copy_from_user(tmpbuf, buf, count))
                 return -EFAULT;
 
-        spin_lock_irqsave(&oprofilefs_lock, flags);
+        raw_spin_lock_irqsave(&oprofilefs_lock, flags);
         *val = simple_strtoul(tmpbuf, NULL, 0);
-        spin_unlock_irqrestore(&oprofilefs_lock, flags);
+        raw_spin_unlock_irqrestore(&oprofilefs_lock, flags);
         return 0;
 }