diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2012-11-29 21:46:14 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2012-11-29 21:46:14 +0100 |
| commit | 9ee71f513c698b05f67e74f7ce66ba4f23f9073f (patch) | |
| tree | bdbfad86c3473998a844e7cfc501aad688043a34 /drivers/idle/intel_idle.c | |
| parent | aa849506742212659f1ac3b7c3ea387478f81ae0 (diff) | |
| parent | a474a515497ef3566cfc17a2cab3d54d6d50ff1c (diff) | |
Merge branch 'pm-cpuidle'
* pm-cpuidle:
cpuidle: Measure idle state durations with monotonic clock
cpuidle: fix a suspicious RCU usage in menu governor
cpuidle: support multiple drivers
cpuidle: prepare the cpuidle core to handle multiple drivers
cpuidle: move driver checking within the lock section
cpuidle: move driver's refcount to cpuidle
cpuidle: fixup device.h header in cpuidle.h
cpuidle / sysfs: move structure declaration into the sysfs.c file
cpuidle: Get typical recent sleep interval
cpuidle: Set residency to 0 if target Cstate not enter
cpuidle: Quickly notice prediction failure in general case
cpuidle: Quickly notice prediction failure for repeat mode
cpuidle / sysfs: move kobj initialization in the syfs file
cpuidle / sysfs: change function parameter
Diffstat (limited to 'drivers/idle/intel_idle.c')
| -rw-r--r-- | drivers/idle/intel_idle.c | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index b0f6b4c8ee1..c49c04d9c2b 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -56,7 +56,6 @@ #include <linux/kernel.h> #include <linux/cpuidle.h> #include <linux/clockchips.h> -#include <linux/hrtimer.h> /* ktime_get_real() */ #include <trace/events/power.h> #include <linux/sched.h> #include <linux/notifier.h> @@ -72,6 +71,7 @@ static struct cpuidle_driver intel_idle_driver = { .name = "intel_idle", .owner = THIS_MODULE, + .en_core_tk_irqen = 1, }; /* intel_idle.max_cstate=0 disables driver */ static int max_cstate = MWAIT_MAX_NUM_CSTATES - 1; @@ -281,8 +281,6 @@ static int intel_idle(struct cpuidle_device *dev, struct cpuidle_state_usage *state_usage = &dev->states_usage[index]; unsigned long eax = (unsigned long)cpuidle_get_statedata(state_usage); unsigned int cstate; - ktime_t kt_before, kt_after; - s64 usec_delta; int cpu = smp_processor_id(); cstate = (((eax) >> MWAIT_SUBSTATE_SIZE) & MWAIT_CSTATE_MASK) + 1; @@ -297,8 +295,6 @@ static int intel_idle(struct cpuidle_device *dev, if (!(lapic_timer_reliable_states & (1 << (cstate)))) clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &cpu); - kt_before = ktime_get_real(); - stop_critical_timings(); if (!need_resched()) { @@ -310,17 +306,9 @@ static int intel_idle(struct cpuidle_device *dev, start_critical_timings(); - kt_after = ktime_get_real(); - usec_delta = ktime_to_us(ktime_sub(kt_after, kt_before)); - - local_irq_enable(); - if (!(lapic_timer_reliable_states & (1 << (cstate)))) clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &cpu); - /* Update cpuidle counters */ - dev->last_residency = (int)usec_delta; - return index; } |