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Date: Thu, 12 Dec 2013 11:55:08 +0000 From: Mel Gorman <mgorman@...e.de> To: Alex Shi <alex.shi@...aro.org> Cc: H Peter Anvin <hpa@...or.com>, Linux-X86 <x86@...nel.org>, Linux-MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>, Mel Gorman <mgorman@...e.de> Subject: [PATCH 2/3] x86: mm: Change tlb_flushall_shift for IvyBridge There was a large performance regression that was bisected to commit 611ae8e3 (x86/tlb: enable tlb flush range support for x86). This patch simply changes the default balance point between a local and global flush for IvyBridge. Signed-off-by: Mel Gorman <mgorman@...e.de> --- arch/x86/kernel/cpu/intel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index dc1ec0d..2d93753 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -627,7 +627,7 @@ static void intel_tlb_flushall_shift_set(struct cpuinfo_x86 *c) tlb_flushall_shift = 5; break; case 0x63a: /* Ivybridge */ - tlb_flushall_shift = 1; + tlb_flushall_shift = 2; break; default: tlb_flushall_shift = 6; -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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