Re: [Patch] tsc-disable_A5

From: Dave Jones (davej@suse.de)
Date: Fri Jun 14 2002 - 13:57:52 EST

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On Fri, Jun 14, 2002 at 11:35:26AM -0700, john stultz wrote:

> This patch disables the TSCs when compiled for Multiquad NUMA hardware.
> Due to the slower interconnect, the TSCs aren't being synced properly at
> boot time. Even if they were synced, since the different nodes are
> driven by different crystals, the TSCs still drift.

-#ifndef CONFIG_X86_TSC
+#if !defined(CONFIG_X86_TSC)||defined(CONFIG_TSC_DISABLE)
+#ifdef CONFIG_TSC_DISABLE
+static int tsc_disable __initdata = 1;
+#else /*CONFIG_TSC_DISABLE*/
static int tsc_disable __initdata = 0;
+#endif /*CONFIG_TSC_DISABLE*/

This looks *really horrible*
Why not just unset CONFIG_X86_TSC for those machines ?

Dave

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs
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