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x86/apic: Remove noisy zero-mask warning from default_send_IPI_mask_logical() 

Since circa 3.5, we've had dozens of reports of people hitting
this warning. Forwarded reports have been met with silence, so
just remove the warning if no-one cares.

Example reports:

  https://bugzilla.redhat.com/show_bug.cgi?id=797687
  https://bugzilla.redhat.com/show_bug.cgi?id=867174
  https://bugzilla.redhat.com/show_bug.cgi?id=894865

Signed-off-by: Dave Jones <davej@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20130118175847.GA27662@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Dave Jones 2013-01-18 12:58:47 -05:00 committed by Ingo Molnar
parent ff7532ca2c
commit e3f0f36ddf
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/apic/ipi.c
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@ -106,7 +106,7 @@ void default_send_IPI_mask_logical(const struct cpumask *cpumask, int vector)
unsigned long mask = cpumask_bits(cpumask)[0];
unsigned long flags;
if (WARN_ONCE(!mask, "empty IPI mask"))
if (!mask)
return;
local_irq_save(flags);