Subject: signal-revert-ptrace-preempt-magic.patch From: Thomas Gleixner Date: Wed, 21 Sep 2011 19:57:12 +0200 Signed-off-by: Thomas Gleixner --- kernel/signal.c | 8 -------- 1 file changed, 8 deletions(-) Index: linux-stable/kernel/signal.c =================================================================== --- linux-stable.orig/kernel/signal.c +++ linux-stable/kernel/signal.c @@ -1898,15 +1898,7 @@ static void ptrace_stop(int exit_code, i if (gstop_done && ptrace_reparented(current)) do_notify_parent_cldstop(current, false, why); - /* - * Don't want to allow preemption here, because - * sys_ptrace() needs this task to be inactive. - * - * XXX: implement read_unlock_no_resched(). - */ - preempt_disable(); read_unlock(&tasklist_lock); - preempt_enable_no_resched(); schedule(); } else { /*