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locking: Add lock context annotations in the spinlock implementation

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Make the spinlock implementation compatible with lock context analysis
(CONTEXT_ANALYSIS := 1) by adding lock context annotations to the
_raw_##op##_...() macros.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260313171510.230998-4-bvanassche@acm.org
This commit is contained in:
Bart Van Assche
2026-03-13 10:15:09 -07:00
committed by Peter Zijlstra
parent c4d3b8c77d
commit b06e988c4c
1 changed files with 8 additions and 4 deletions
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12
kernel/locking/spinlock.c
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@@ -64,8 +64,9 @@ EXPORT_PER_CPU_SYMBOL(__mmiowb_state);
* time (making _this_ CPU preemptible if possible), and we also signal
* towards that other CPU that it should break the lock ASAP.
*/
#define BUILD_LOCK_OPS(op, locktype) \
#define BUILD_LOCK_OPS(op, locktype, lock_ctx_op) \
static void __lockfunc __raw_##op##_lock(locktype##_t *lock) \
lock_ctx_op(lock) \
{ \
for (;;) { \
preempt_disable(); \
@@ -78,6 +79,7 @@ static void __lockfunc __raw_##op##_lock(locktype##_t *lock) \
} \
\
static unsigned long __lockfunc __raw_##op##_lock_irqsave(locktype##_t *lock) \
lock_ctx_op(lock) \
{ \
unsigned long flags; \
\
@@ -96,11 +98,13 @@ static unsigned long __lockfunc __raw_##op##_lock_irqsave(locktype##_t *lock) \
} \
\
static void __lockfunc __raw_##op##_lock_irq(locktype##_t *lock) \
lock_ctx_op(lock) \
{ \
_raw_##op##_lock_irqsave(lock); \
} \
\
static void __lockfunc __raw_##op##_lock_bh(locktype##_t *lock) \
lock_ctx_op(lock) \
{ \
unsigned long flags; \
\
@@ -123,11 +127,11 @@ static void __lockfunc __raw_##op##_lock_bh(locktype##_t *lock) \
* __[spin|read|write]_lock_irqsave()
* __[spin|read|write]_lock_bh()
*/
BUILD_LOCK_OPS(spin, raw_spinlock);
BUILD_LOCK_OPS(spin, raw_spinlock, __acquires);
#ifndef CONFIG_PREEMPT_RT
BUILD_LOCK_OPS(read, rwlock);
BUILD_LOCK_OPS(write, rwlock);
BUILD_LOCK_OPS(read, rwlock, __acquires_shared);
BUILD_LOCK_OPS(write, rwlock, __acquires);
#endif
#endif