In our performance tests, we find that the performance of sysbench is descend. Function call consumes too many instructions, change pi_state_update_owner() to an inline function.
Test environment: CPU: Intel(R) Xeon(R) Gold 6154 CPU @ 3.00GHz * 2 MEM: 312G Test case: https://github.com/akopytov/sysbench Test cmd: ./sysbench --test=threads --num-threads=$thr --thread-yields=100 --thread-locks=2 run $thr stock non-inline inline 256 0.8511 0.9254 0.8588 512 0.8489 0.9232 0.8503 1024 0.8347 0.9248 0.8495 2048 0.8338 0.9575 0.8402 Signed-off-by: Xiangyang Yu <yuxiangya...@huawei.com> --- kernel/futex.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/futex.c b/kernel/futex.c index e68db7745039..570dee4e9e6f 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -763,7 +763,7 @@ static struct futex_pi_state *alloc_pi_state(void) return pi_state; } -static void pi_state_update_owner(struct futex_pi_state *pi_state, +static inline void pi_state_update_owner(struct futex_pi_state *pi_state, struct task_struct *new_owner) { struct task_struct *old_owner = pi_state->owner; -- 2.23.0
