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>
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index 49c8727..a4c5624 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -166,7 +166,7 @@
int oprofilefs_ulong_from_user(unsigned long * val, char const __user * buf, size_t count);
/** lock for read/write safety */
-extern spinlock_t oprofilefs_lock;
+extern raw_spinlock_t oprofilefs_lock;
/**
* Add the contents of a circular buffer to the event buffer.