From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Fri, 23 May 2008 13:41:19 +0000 (+0100)
Subject: hrtimer: remove warning in hres_timers_resume
X-Git-Tag: firefly_0821_release~19676^2^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d031476408ae0f5196e3c579f519dfdefb099b67;p=firefly-linux-kernel-4.4.55.git

hrtimer: remove warning in hres_timers_resume

hres_timers_resume() warns if there appears to be more than one cpu
online.  This warning makes sense when the suspend/resume mechanism
offlines all cpus but one during the suspend/resume process.

However, Xen suspend does not need to offline the other cpus; it
merely keeps them tied up in stop_machine() while the virtual machine
is suspended.  The warning hres_timers_resume issues is therefore
spurious.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 421be5fe5cc7..493c4b8b8cba 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -632,8 +632,6 @@ void clock_was_set(void)
  */
 void hres_timers_resume(void)
 {
-	WARN_ON_ONCE(num_online_cpus() > 1);
-
 	/* Retrigger the CPU local events: */
 	retrigger_next_event(NULL);
 }