41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
From git-commits-head-owner@vger.kernel.org Mon Oct 23 10:18:42 2006
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Date: Sun, 22 Oct 2006 00:59:04 GMT
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Message-Id: <200610220059.k9M0x4e8025532@hera.kernel.org>
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From: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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To: git-commits-head@vger.kernel.org
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Subject: [PATCH] x86-64: Fix C3 timer test
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commit aa026ede513b7d672fa7d9106b2f2a475455dcf2
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tree 13a4e7934f3597336ebdfde1d720b5f2c877ad6e
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parent cb7fabcf9d4340b61f012cc7e8e3d7ff5c4f441c
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author Andi Kleen <ak@suse.de> 1161470475 +0200
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committer Andi Kleen <andi@basil.nowhere.org> 1161470475 +0200
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[PATCH] x86-64: Fix C3 timer test
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There was a typo in the C3 latency test to decide of the TSC
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should be used or not. It used the C2 latency threshold, not the
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C3 one. Fix that.
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This should fix the time on various dual core laptops.
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Signed-off-by: Andi Kleen <ak@suse.de>
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arch/x86_64/kernel/time.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
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index 1ba5a44..88722f1 100644
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--- a/arch/x86_64/kernel/time.c
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+++ b/arch/x86_64/kernel/time.c
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@@ -948,7 +948,7 @@ #endif
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if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) {
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#ifdef CONFIG_ACPI
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/* But TSC doesn't tick in C3 so don't use it there */
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- if (acpi_fadt.length > 0 && acpi_fadt.plvl3_lat < 100)
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+ if (acpi_fadt.length > 0 && acpi_fadt.plvl3_lat < 1000)
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return 1;
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#endif
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return 0;
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