From 4963f62045b64f93c45fbcb6f8f0baf1e3e7a127 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Thu, 13 Dec 2007 23:50:45 -0500 Subject: [PATCH] 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 --- drivers/acpi/processor_idle.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index f996d0e3768..26ade1f3f5c 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;