23d65cb97f
The overhead of spinlok is less than mutext (mutex need to call enter_critical section.) After this patch, `down_write_trylock` and `down_read_trylock` can be use in interrupt context. The instruction is protected with mutex only one instruction so using spinlock is better. Signed-off-by: TaiJu Wu <tjwu1217@gmail.com> |
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|---|---|---|
| .. | ||
| CMakeLists.txt | ||
| Make.defs | ||
| sem_clockwait.c | ||
| sem_destroy.c | ||
| sem_holder.c | ||
| sem_initialize.c | ||
| sem_post.c | ||
| sem_recover.c | ||
| sem_reset.c | ||
| sem_rw.c | ||
| sem_setprotocol.c | ||
| sem_tickwait.c | ||
| sem_timedwait.c | ||
| sem_timeout.c | ||
| sem_trywait.c | ||
| sem_wait.c | ||
| sem_waitirq.c | ||
| semaphore.h | ||
| spinlock.c | ||