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authorjohn stultz <johnstul@us.ibm.com>2006-06-26 00:25:10 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-26 09:58:21 -0700
commit539eb11e6e904f2cd4f62908cc5e44d724879721 (patch)
treedf18c747c5226b138862fb19fad5b1527055b9c9 /arch/i386/kernel/numaq.c
parent8d016ef1380a2a9a5ca5742ede04334199868f82 (diff)
[PATCH] Time: i386 Conversion - part 2: Rework TSC Support
As part of the i386 conversion to the generic timekeeping infrastructure, this introduces a new tsc.c file. The code in this file replaces the TSC initialization, management and access code currently in timer_tsc.c (which will be removed) that we want to preserve. The code also introduces the following functionality: o tsc_khz: like cpu_khz but stores the TSC frequency on systems that do not change TSC frequency w/ CPU frequency o check/mark_tsc_unstable: accessor/modifier flag for TSC timekeeping usability o minor cleanups to calibration math. This patch also includes a one line __cpuinitdata fix from Zwane Mwaikambo. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/numaq.c')
-rw-r--r--arch/i386/kernel/numaq.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/i386/kernel/numaq.c b/arch/i386/kernel/numaq.c
index 5f5b075f860..0caf14652ba 100644
--- a/arch/i386/kernel/numaq.c
+++ b/arch/i386/kernel/numaq.c
@@ -79,10 +79,12 @@ int __init get_memcfg_numaq(void)
return 1;
}
-static int __init numaq_dsc_disable(void)
+static int __init numaq_tsc_disable(void)
{
- printk(KERN_DEBUG "NUMAQ: disabling TSC\n");
- tsc_disable = 1;
+ if (num_online_nodes() > 1) {
+ printk(KERN_DEBUG "NUMAQ: disabling TSC\n");
+ tsc_disable = 1;
+ }
return 0;
}
-core_initcall(numaq_dsc_disable);
+arch_initcall(numaq_tsc_disable);