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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-09 23:18:03 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-14 19:35:10 (GMT) |
| commit | faad38492814112e3e7ce94d90123bbe301fff33 (patch) | |
| tree | 36f4bf459d2dfdda68a891228af94aebbf951c95 /kernel/sched/idle.c | |
| parent | 7312280bd2ad9df1bcca236c5614091a0bd1504c (diff) | |
| download | linux-faad38492814112e3e7ce94d90123bbe301fff33.tar.xz | |
sched / idle: Call idle_set_state() from cpuidle_enter_state()
Introduce a wrapper function around idle_set_state() called
sched_idle_set_state() that will pass this_rq() to it as the
first argument and make cpuidle_enter_state() call the new
function before and after entering the target state.
At the same time, remove direct invocations of idle_set_state()
from call_cpuidle().
This will allow the invocation of default_idle_call() to be
moved from call_cpuidle() to cpuidle_enter_state() safely
and call_cpuidle() to be simplified a bit as a result.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Tested-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Diffstat (limited to 'kernel/sched/idle.c')
| -rw-r--r-- | kernel/sched/idle.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index 9c919b4..5d9f549 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -15,6 +15,15 @@ #include "sched.h" +/** + * sched_idle_set_state - Record idle state for the current CPU. + * @idle_state: State to record. + */ +void sched_idle_set_state(struct cpuidle_state *idle_state) +{ + idle_set_state(this_rq(), idle_state); +} + static int __read_mostly cpu_idle_force_poll; void cpu_idle_poll_ctrl(bool enable) @@ -100,9 +109,6 @@ static int call_cpuidle(struct cpuidle_driver *drv, struct cpuidle_device *dev, return -EBUSY; } - /* Take note of the planned idle state. */ - idle_set_state(this_rq(), &drv->states[next_state]); - /* * Enter the idle state previously returned by the governor decision. * This function will block until an interrupt occurs and will take @@ -110,9 +116,6 @@ static int call_cpuidle(struct cpuidle_driver *drv, struct cpuidle_device *dev, */ entered_state = cpuidle_enter(drv, dev, next_state); - /* The cpu is no longer idle or about to enter idle. */ - idle_set_state(this_rq(), NULL); - if (entered_state == -EBUSY) default_idle_call(); |