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Message-ID: <20130118175847.GA27662@redhat.com>
Date:	Fri, 18 Jan 2013 12:58:47 -0500
From:	Dave Jones <davej@...hat.com>
To:	x86@...nel.org
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Remove noisy 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@...hat.com>

diff --git a/arch/x86/kernel/apic/ipi.c b/arch/x86/kernel/apic/ipi.c
index cce91bf..7434d85 100644
--- a/arch/x86/kernel/apic/ipi.c
+++ b/arch/x86/kernel/apic/ipi.c
@@ -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);
--
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