diff options
| author | Len Brown <len.brown@intel.com> | 2007-12-14 05:50:45 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-12-14 06:09:39 +0100 |
| commit | 4963f62045b64f93c45fbcb6f8f0baf1e3e7a127 (patch) | |
| tree | f5bd1a7148cc1889af6d8f87c4603550a5aeb909 /drivers/acpi/processor_idle.c | |
| parent | ACPI: CONFIG_CPU_IDLE=ACPI by default (diff) | |
| download | linux-4963f62045b64f93c45fbcb6f8f0baf1e3e7a127.tar.xz linux-4963f62045b64f93c45fbcb6f8f0baf1e3e7a127.zip | |
cpuidle: create processor.latency_factor tunable
Start with default value of 6, so by default,
there is no functional change in this patch.
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 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index f996d0e37689..26ade1f3f5cd 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -94,6 +94,9 @@ module_param(bm_history, uint, 0644); static int acpi_processor_set_power_policy(struct acpi_processor *pr); +#else /* CONFIG_CPU_IDLE */ +static unsigned int latency_factor __read_mostly = 6; +module_param(latency_factor, uint, 0644); #endif /* @@ -1576,7 +1579,7 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr) snprintf(state->name, CPUIDLE_NAME_LEN, "C%d", i); state->exit_latency = cx->latency; - state->target_residency = cx->latency * 6; + state->target_residency = cx->latency * latency_factor; state->power_usage = cx->power; state->flags = 0; |