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x86: Change warning message in TSC calibration.

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When calibration against PIT fails, the warning that we print is misleading.
In a virtualized environment the VM may get descheduled while calibration
or, the check in PIT calibration may fail due to other virtualization
overheads.

The warning message explicitly assumes that calibration failed due to SMI's
which may not be the case. Change that to something proper.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alok N Kataria 2008-09-03 18:18:01 -07:00 committed by Linus Torvalds
parent ce36394269
commit de014d6176
1 changed files with 1 additions and 2 deletions
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3
arch/x86/kernel/tsc.c
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@ -267,8 +267,7 @@ unsigned long native_calibrate_tsc(void)
*/ */
if (tsc_pit_min == ULONG_MAX) { if (tsc_pit_min == ULONG_MAX) {
/* PIT gave no useful value */ /* PIT gave no useful value */
printk(KERN_WARNING "TSC: PIT calibration failed due to " printk(KERN_WARNING "TSC: Unable to calibrate against PIT\n");
"SMI disturbance.\n");
/* We don't have an alternative source, disable TSC */ /* We don't have an alternative source, disable TSC */
if (!hpet && !pm1 && !pm2) { if (!hpet && !pm1 && !pm2) {