From: Mel Gorman <mgorman@suse.de>
To: Alex Shi <alex.shi@linaro.org>, Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Fengguang Wu <fengguang.wu@intel.com>,
H Peter Anvin <hpa@zytor.com>, Linux-X86 <x86@kernel.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: [PATCH 3/4] x86: mm: Change tlb_flushall_shift for IvyBridge
Date: Fri, 13 Dec 2013 20:01:09 +0000 [thread overview]
Message-ID: <1386964870-6690-4-git-send-email-mgorman@suse.de> (raw)
In-Reply-To: <1386964870-6690-1-git-send-email-mgorman@suse.de>
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@suse.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
--
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next prev parent reply other threads:[~2013-12-13 20:01 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-13 20:01 [PATCH 0/4] Fix ebizzy performance regression due to X86 TLB range flush v2 Mel Gorman
2013-12-13 20:01 ` [PATCH 1/4] x86: mm: Clean up inconsistencies when flushing TLB ranges Mel Gorman
2013-12-13 20:01 ` [PATCH 2/4] x86: mm: Account for TLB flushes only when debugging Mel Gorman
2013-12-13 20:01 ` Mel Gorman [this message]
2013-12-13 20:01 ` [PATCH 4/4] x86: mm: Eliminate redundant page table walk during TLB range flushing Mel Gorman
2013-12-13 21:16 ` [PATCH 0/4] Fix ebizzy performance regression due to X86 TLB range flush v2 Linus Torvalds
2013-12-13 22:38 ` H. Peter Anvin
2013-12-16 10:39 ` Mel Gorman
2013-12-16 17:17 ` Linus Torvalds
2013-12-17 9:55 ` Mel Gorman
2013-12-15 15:55 ` Mel Gorman
2013-12-15 16:17 ` Mel Gorman
2013-12-15 18:34 ` Linus Torvalds
2013-12-16 11:16 ` Mel Gorman
2013-12-16 10:24 ` Ingo Molnar
2013-12-16 12:59 ` Mel Gorman
2013-12-16 13:44 ` Ingo Molnar
2013-12-17 9:21 ` Mel Gorman
2013-12-17 9:26 ` Peter Zijlstra
2013-12-17 11:00 ` Ingo Molnar
2013-12-17 14:32 ` Mel Gorman
2013-12-17 14:42 ` Ingo Molnar
2013-12-17 17:54 ` Mel Gorman
2013-12-18 10:24 ` Ingo Molnar
2013-12-19 14:24 ` Mel Gorman
2013-12-19 16:49 ` Ingo Molnar
2013-12-20 11:13 ` Mel Gorman
2013-12-20 11:18 ` Ingo Molnar
2013-12-20 12:00 ` Mel Gorman
2013-12-20 12:20 ` Ingo Molnar
2013-12-20 13:55 ` Mel Gorman
2013-12-18 7:28 ` Fengguang Wu
2013-12-19 14:34 ` Mel Gorman
2013-12-20 15:51 ` Fengguang Wu
2013-12-20 16:44 ` Mel Gorman
2013-12-21 15:49 ` Fengguang Wu
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