The value delta is correct as well, although calc_load_idle[idx] is equal to 0. Remove this useless test to improve performance, since this function is called more frequently.
Signed-off-by: Minfei Huang <[email protected]> --- kernel/sched/loadavg.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/kernel/sched/loadavg.c b/kernel/sched/loadavg.c index ef71590..5a5d7ae 100644 --- a/kernel/sched/loadavg.c +++ b/kernel/sched/loadavg.c @@ -216,10 +216,9 @@ void calc_load_exit_idle(void) static long calc_load_fold_idle(void) { int idx = calc_load_read_idx(); - long delta = 0; + long delta; - if (atomic_long_read(&calc_load_idle[idx])) - delta = atomic_long_xchg(&calc_load_idle[idx], 0); + delta = atomic_long_xchg(&calc_load_idle[idx], 0); return delta; } -- 2.6.3
