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| author | Daniel Lezcano <daniel.lezcano@linaro.org> | 2019-11-16 14:16:13 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-11-20 11:46:18 +0100 |
| commit | 5aa9ba6312e36c18626e73506b92d1513d815435 (patch) | |
| tree | f67c3683a228133349ae6abc01d7f52221c2dfd9 /kernel/sched | |
| parent | c55b51a06b01d67a99457bb82a8c31081c7faa23 (diff) | |
| download | linux-5aa9ba6312e36c18626e73506b92d1513d815435.tar.bz2 | |
cpuidle: Pass exit latency limit to cpuidle_use_deepest_state()
Modify cpuidle_use_deepest_state() to take an additional exit latency
limit argument to be passed to find_deepest_idle_state() and make
cpuidle_idle_call() pass dev->forced_idle_latency_limit_ns to it for
forced idle.
Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
[ rjw: Rebase and rearrange code, subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/idle.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index cd05ffa0abfe..fc9604ddd802 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -166,6 +166,8 @@ static void cpuidle_idle_call(void) */ if (idle_should_enter_s2idle() || dev->forced_idle_latency_limit_ns) { + u64 max_latency_ns; + if (idle_should_enter_s2idle()) { rcu_idle_enter(); @@ -176,12 +178,16 @@ static void cpuidle_idle_call(void) } rcu_idle_exit(); + + max_latency_ns = U64_MAX; + } else { + max_latency_ns = dev->forced_idle_latency_limit_ns; } tick_nohz_idle_stop_tick(); rcu_idle_enter(); - next_state = cpuidle_find_deepest_state(drv, dev); + next_state = cpuidle_find_deepest_state(drv, dev, max_latency_ns); call_cpuidle(drv, dev, next_state); } else { bool stop_tick = true; |