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authorjohn stultz <johnstul@us.ibm.com>2007-05-02 19:27:08 +0200
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 19:27:08 +0200
commit5a90cf205c922707ffed2d8f87cefd942e96b0ba (patch)
tree5e9c9c1be3d149bff7620db89e1ede2317ba7362 /drivers/acpi
parent2714221985ce6388ec2fa78d7d52e2a5bef78eec (diff)
[PATCH] x86: Log reason why TSC was marked unstable
Change mark_tsc_unstable() so it takes a string argument, which holds the reason the TSC was marked unstable. This is then displayed the first time mark_tsc_unstable is called. This should help us better debug why the TSC was marked unstable on certain systems and allow us to make sure we're not being overly paranoid when throwing out this troublesome clocksource. Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/processor_idle.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index ae0654cd11e..ee5759bef94 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -475,7 +475,7 @@ static void acpi_processor_idle(void)
#ifdef CONFIG_GENERIC_TIME
/* TSC halts in C2, so notify users */
- mark_tsc_unstable();
+ mark_tsc_unstable("possible TSC halt in C2");
#endif
/* Re-enable interrupts */
local_irq_enable();
@@ -517,7 +517,7 @@ static void acpi_processor_idle(void)
#ifdef CONFIG_GENERIC_TIME
/* TSC halts in C3, so notify users */
- mark_tsc_unstable();
+ mark_tsc_unstable("TSC halts in C3");
#endif
/* Re-enable interrupts */
local_irq_enable();