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include/qemu/thread: Use qatomic_* functions 

Use qatomic_*, which expands to __atomic_* in preference
to the "legacy" __sync_* functions.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-10-22 23:04:11 +10:00
parent 590536369f
commit 7ed9e721cc
1 changed files with 4 additions and 4 deletions
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8
include/qemu/thread.h
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@ -227,7 +227,7 @@ struct QemuSpin {
static inline void qemu_spin_init(QemuSpin *spin)
{
__sync_lock_release(&spin->value);
qatomic_set(&spin->value, 0);
#ifdef CONFIG_TSAN
__tsan_mutex_create(spin, __tsan_mutex_not_static);
#endif
@ -246,7 +246,7 @@ static inline void qemu_spin_lock(QemuSpin *spin)
#ifdef CONFIG_TSAN
__tsan_mutex_pre_lock(spin, 0);
#endif
while (unlikely(__sync_lock_test_and_set(&spin->value, true))) {
while (unlikely(qatomic_xchg(&spin->value, 1))) {
while (qatomic_read(&spin->value)) {
cpu_relax();
}
@ -261,7 +261,7 @@ static inline bool qemu_spin_trylock(QemuSpin *spin)
#ifdef CONFIG_TSAN
__tsan_mutex_pre_lock(spin, __tsan_mutex_try_lock);
#endif
bool busy = __sync_lock_test_and_set(&spin->value, true);
bool busy = qatomic_xchg(&spin->value, true);
#ifdef CONFIG_TSAN
unsigned flags = __tsan_mutex_try_lock;
flags |= busy ? __tsan_mutex_try_lock_failed : 0;
@ -280,7 +280,7 @@ static inline void qemu_spin_unlock(QemuSpin *spin)
#ifdef CONFIG_TSAN
__tsan_mutex_pre_unlock(spin, 0);
#endif
__sync_lock_release(&spin->value);
qatomic_store_release(&spin->value, 0);
#ifdef CONFIG_TSAN
__tsan_mutex_post_unlock(spin, 0);
#endif