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| author | Venki Pallipadi <venkatesh.pallipadi@intel.com> | 2008-01-07 17:50:10 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-01-07 17:50:10 -0500 |
| commit | 5b3f0e6c1c9638b11a1063bf93c60a0766550b02 (patch) | |
| tree | 21d685bb27cb5e42c1f9160dc15b75a6cd672084 /drivers/acpi/processor_idle.c | |
| parent | 3ce54450461bad18bbe1f9f5aa3ecd2f8e8d1235 (diff) | |
| download | linux-5b3f0e6c1c9638b11a1063bf93c60a0766550b02.tar.bz2 | |
ACPI: Reintroduce run time configurable max_cstate for !CPU_IDLE case
This was writeable in 2.6.23 but the cpuidle merge made it read-only. But
some people's scripts (ie: Mark's) were writing to it.
As an unhappy compromise, make max_cstate writeable again if the kernel was
configured without CONFIG_CPU_IDLE.
http://bugzilla.kernel.org/show_bug.cgi?id=9683
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Mark Lord <lkml@rtr.ca>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 2fe34cc73c13..2235f4e02d26 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -76,7 +76,11 @@ static void (*pm_idle_save) (void) __read_mostly; #define PM_TIMER_TICKS_TO_US(p) (((p) * 1000)/(PM_TIMER_FREQUENCY/1000)) static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER; +#ifdef CONFIG_CPU_IDLE module_param(max_cstate, uint, 0000); +#else +module_param(max_cstate, uint, 0644); +#endif static unsigned int nocst __read_mostly; module_param(nocst, uint, 0000); |