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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2020-06-25 13:52:53 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2020-06-25 13:52:53 +0200
commit10e8b11eb3195e11450c509d4dd3984d707a4167 (patch)
tree03cd14b0f8d81868677bec9b96aef93622111687 /kernel
parent81e6737518a1e392ead4e568a4ee70bb7c371458 (diff)
downloadlinux-10e8b11eb3195e11450c509d4dd3984d707a4167.tar.bz2
cpuidle: Rearrange s2idle-specific idle state entry code
Implement call_cpuidle_s2idle() in analogy with call_cpuidle() for the s2idle-specific idle state entry and invoke it from cpuidle_idle_call() to make the s2idle-specific idle entry code path look more similar to the "regular" idle entry one. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Chen Yu <yu.c.chen@intel.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched/idle.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index 05deb81bb3e3..1ae95b9150d3 100644
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c
@@ -96,6 +96,15 @@ void __cpuidle default_idle_call(void)
}
}
+static int call_cpuidle_s2idle(struct cpuidle_driver *drv,
+ struct cpuidle_device *dev)
+{
+ if (current_clr_polling_and_test())
+ return -EBUSY;
+
+ return cpuidle_enter_s2idle(drv, dev);
+}
+
static int call_cpuidle(struct cpuidle_driver *drv, struct cpuidle_device *dev,
int next_state)
{
@@ -171,11 +180,9 @@ static void cpuidle_idle_call(void)
if (idle_should_enter_s2idle()) {
rcu_idle_enter();
- entered_state = cpuidle_enter_s2idle(drv, dev);
- if (entered_state > 0) {
- local_irq_enable();
+ entered_state = call_cpuidle_s2idle(drv, dev);
+ if (entered_state > 0)
goto exit_idle;
- }
rcu_idle_exit();