The ready_waiting_counts atomic variable is compared against the wrong online cpu count. The latter is computed incorrectly using logical-OR instead of bit-OR. This patch fixes that.
Signed-off-by: Sivaram Nair <[email protected]> --- drivers/cpuidle/coupled.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c index 3265844..2a297f8 100644 --- a/drivers/cpuidle/coupled.c +++ b/drivers/cpuidle/coupled.c @@ -209,7 +209,7 @@ inline int cpuidle_coupled_set_not_ready(struct cpuidle_coupled *coupled) int all; int ret; - all = coupled->online_count || (coupled->online_count << WAITING_BITS); + all = coupled->online_count | (coupled->online_count << WAITING_BITS); ret = atomic_add_unless(&coupled->ready_waiting_counts, -MAX_WAITING_CPUS, all); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
