From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Tue, 7 Jul 2015 16:26:13 +0000 (+0200)
Subject: x86/irq: Hide 'HYP:' line in /proc/interrupts when not on Xen/Hyper-V
X-Git-Tag: omap-for-v4.3/fixes-merge-window~14^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9d87cd61a6b71ee00b7576a3ebc10208becdbea1;p=pandora-kernel.git

x86/irq: Hide 'HYP:' line in /proc/interrupts when not on Xen/Hyper-V

Hypervisor callback interrupts are only accounted on
Xen/Hyper-V. There is no point in having always-zero HYP: line
on other hypervisors or bare metal. Print the line only if
HYPERVISOR_CALLBACK_VECTOR was allocated.

Reported-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Andrew Jones <drjones@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1436286373-11908-1-git-send-email-vkuznets@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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