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[PATCH] mtrr: Add lock annotations for prepare_set and post_set

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The functions prepare_set and post_set in kernel/cpu/mtrr/generic.c wrap
the spinlock set_atomicity_lock: prepare_set returns with the lock held,
and post_set releases the lock without acquiring it.  Add lock annotations
to these two functions so that sparse can check callers for lock pairing,
and so that sparse will not complain about these functions since they
intentionally use locks in this manner.

Signed-off-by: Josh Triplett <josh@freedesktop.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Josh Triplett 2006-09-25 23:32:36 -07:00 committed by Linus Torvalds
parent c7f40ff15a
commit 182daa5567
1 changed files with 2 additions and 2 deletions
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4
arch/i386/kernel/cpu/mtrr/generic.c
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@ -243,7 +243,7 @@ static DEFINE_SPINLOCK(set_atomicity_lock);
* has been called.
*/
static void prepare_set(void)
static void prepare_set(void) __acquires(set_atomicity_lock)
{
unsigned long cr0;
@ -274,7 +274,7 @@ static void prepare_set(void)
mtrr_wrmsr(MTRRdefType_MSR, deftype_lo & 0xf300UL, deftype_hi);
}
static void post_set(void)
static void post_set(void) __releases(set_atomicity_lock)
{
/* Flush TLBs (no need to flush caches - they are disabled) */
__flush_tlb();