[Xen-devel] [PATCH 12 of 12] hrtimer: remove warning in hres_timers_resume

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

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@xxxxxxxxxx>
---
 kernel/hrtimer.c |    2 --
 1 file changed, 2 deletions(-)

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



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