* [PATCH 5/6] do_group_exit: don't take tasklist_lock
@ 2006-02-22 23:05 Oleg Nesterov
0 siblings, 0 replies; only message in thread
From: Oleg Nesterov @ 2006-02-22 23:05 UTC (permalink / raw)
To: Andrew Morton
Cc: linux-kernel, Ingo Molnar, Paul E. McKenney, Eric W. Biederman,
David Howells
do_group_exit() takes tasklist_lock for zap_other_threads(),
this is unneeded now.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
--- 2.6.16-rc3/kernel/exit.c~5_DGE 2006-02-23 01:00:35.000000000 +0300
+++ 2.6.16-rc3/kernel/exit.c 2006-02-23 02:01:03.000000000 +0300
@@ -971,7 +971,6 @@ do_group_exit(int exit_code)
else if (!thread_group_empty(current)) {
struct signal_struct *const sig = current->signal;
struct sighand_struct *const sighand = current->sighand;
- read_lock(&tasklist_lock);
spin_lock_irq(&sighand->siglock);
if (sig->flags & SIGNAL_GROUP_EXIT)
/* Another thread got here before we took the lock. */
@@ -981,7 +980,6 @@ do_group_exit(int exit_code)
zap_other_threads(current);
}
spin_unlock_irq(&sighand->siglock);
- read_unlock(&tasklist_lock);
}
do_exit(exit_code);
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2006-02-22 23:08 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2006-02-22 23:05 [PATCH 5/6] do_group_exit: don't take tasklist_lock Oleg Nesterov
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome