From: Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>
Date: Wed, 26 Sep 2012 02:11:28 +0000 (+0900)
Subject: x86: Distinguish TLB shootdown interrupts from other functions call interrupts
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~84^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd0f5869724ff6195c6e7f12f8287c66a132e0ba;p=pandora-kernel.git

x86: Distinguish TLB shootdown interrupts from other functions call interrupts

As TLB shootdown requests to other CPU cores are now using function call
interrupts, TLB shootdowns entry in /proc/interrupts is always shown as 0.

This behavior change was introduced by commit 52aec3308db8 ("x86/tlb:
replace INVALIDATE_TLB_VECTOR by CALL_FUNCTION_VECTOR").

This patch reverts TLB shootdowns entry in /proc/interrupts to count TLB
shootdowns separately from the other function call interrupts.

Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>
Link: http://lkml.kernel.org/r/20120926021128.22212.20440.stgit@hpxw
Acked-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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