x86/idle: Restore trace_cpu_idle to mwait_idle() calls
authorJisheng Zhang <jszhang@marvell.com>
Thu, 20 Aug 2015 04:54:39 +0000 (12:54 +0800)
committerThomas Gleixner <tglx@linutronix.de>
Thu, 20 Aug 2015 19:37:45 +0000 (21:37 +0200)
commite43d0189ac02415fe4487f79fc35e8f147e9ea0d
tree91d56ed51d8a7fda2e4062c576f00b63b1ccec4e
parentb5be5b7fff25f806625c801832eded5ceedc70e9
x86/idle: Restore trace_cpu_idle to mwait_idle() calls

Commit b253149b843f ("sched/idle/x86: Restore mwait_idle() to fix boot
hangs, to improve power savings and to improve performance") restores
mwait_idle(), but the trace_cpu_idle related calls are missing. This
causes powertop on my old desktop powered by Intel Core2 E6550 to
report zero wakeups and zero events.

Add them back to restore the proper behaviour.

Fixes: b253149b843f ("sched/idle/x86: Restore mwait_idle() to ...")
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Cc: <len.brown@intel.com>
Cc: stable@vger.kernel.org # 4.1
Link: http://lkml.kernel.org/r/1440046479-4262-1-git-send-email-jszhang@marvell.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
arch/x86/kernel/process.c