I want to dermine which thread is the last one to enter do_exit in profile_task_exit. But when a lot of threads exit, tsk->signal->live is not correct since it decrease after profile_task_exit.
Signed-off-by: liuchao <[email protected]> --- kernel/exit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/exit.c b/kernel/exit.c index ce2a75bc0ade..1693764bc356 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -708,6 +708,7 @@ void __noreturn do_exit(long code) struct task_struct *tsk = current; int group_dead; + group_dead = atomic_dec_and_test(&tsk->signal->live); profile_task_exit(tsk); kcov_task_exit(tsk); @@ -755,7 +756,6 @@ void __noreturn do_exit(long code) if (tsk->mm) sync_mm_rss(tsk->mm); acct_update_integrals(tsk); - group_dead = atomic_dec_and_test(&tsk->signal->live); if (group_dead) { /* * If the last thread of global init has exited, panic -- 2.19.1
