From: Ingo Molnar <mingo@elte.hu>
Date: Sun, 29 Jun 2008 13:01:59 +0000 (+0200)
Subject: sched: sched_clock_cpu() based cpu_clock(), lockdep fix
X-Git-Tag: v2.6.27-rc1~1105^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d452c9b10caeec455eb5e56a0ef4ed485178213;p=pandora-kernel.git

sched: sched_clock_cpu() based cpu_clock(), lockdep fix

Vegard Nossum reported:

> WARNING: at kernel/lockdep.c:2738 check_flags+0x142/0x160()

which happens due to:

 unsigned long long cpu_clock(int cpu)
 {
         unsigned long long clock;
         unsigned long flags;

         raw_local_irq_save(flags);

as lower level functions can take locks, we must not do that, use
proper lockdep-annotated irq save/restore.

Reported-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

Reading git-diff-tree failed