From: Oleg Nesterov <oleg@redhat.com>
Date: Mon, 17 Nov 2008 14:40:08 +0000 (+0100)
Subject: thread_group_cputime: move a couple of callsites outside of ->siglock
X-Git-Tag: v2.6.29-rc1~572^2~4^6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2b5fe6de58276d0b5a7c884d5dbfc300ca47db78;p=pandora-kernel.git

thread_group_cputime: move a couple of callsites outside of ->siglock

Impact: relax the locking of cpu-time accounting calls

->siglock buys nothing for thread_group_cputime() in do_sys_times() and
wait_task_zombie() (which btw takes the unrelated parent's ->siglock).

Actually I think do_sys_times() doesn't need ->siglock at all.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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