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authorIngo Molnar <mingo@elte.hu>2008-01-30 07:33:23 -0500
committerIngo Molnar <mingo@elte.hu>2008-01-30 07:33:23 -0500
commitdf43510b18b8439465b4b58556f0495b5f5d771e (patch)
treead9c1c45f4c7046b9843b1861c767d0ce8a3a3b8
parentade1af77129dea6e335b525ed3be3b846bc1ec13 (diff)
x86: check_tsc_warp() slowness fix
100 million max # of loops is a bit too much - reduce it to 10 million. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/x86/kernel/tsc_sync.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/tsc_sync.c b/arch/x86/kernel/tsc_sync.c
index ace340524c01..7110078f242c 100644
--- a/arch/x86/kernel/tsc_sync.c
+++ b/arch/x86/kernel/tsc_sync.c
@@ -67,12 +67,12 @@ static __cpuinit void check_tsc_warp(void)
67 67
68 /* 68 /*
69 * Be nice every now and then (and also check whether 69 * Be nice every now and then (and also check whether
70 * measurement is done [we also insert a 100 million 70 * measurement is done [we also insert a 10 million
71 * loops safety exit, so we dont lock up in case the 71 * loops safety exit, so we dont lock up in case the
72 * TSC readout is totally broken]): 72 * TSC readout is totally broken]):
73 */ 73 */
74 if (unlikely(!(i & 7))) { 74 if (unlikely(!(i & 7))) {
75 if (now > end || i > 100000000) 75 if (now > end || i > 10000000)
76 break; 76 break;
77 cpu_relax(); 77 cpu_relax();
78 touch_nmi_watchdog(); 78 touch_nmi_watchdog();