diff options
Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 56132e843c99..c7876e9e024f 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -184,20 +184,22 @@ static noinstr void enter_s2idle_proper(struct cpuidle_driver *drv, * cpuidle_enter_s2idle - Enter an idle state suitable for suspend-to-idle. * @drv: cpuidle driver for the given CPU. * @dev: cpuidle device for the given CPU. + * @latency_limit_ns: Idle state exit latency limit * * If there are states with the ->enter_s2idle callback, find the deepest of * them and enter it with frozen tick. */ -int cpuidle_enter_s2idle(struct cpuidle_driver *drv, struct cpuidle_device *dev) +int cpuidle_enter_s2idle(struct cpuidle_driver *drv, struct cpuidle_device *dev, + u64 latency_limit_ns) { int index; /* - * Find the deepest state with ->enter_s2idle present, which guarantees - * that interrupts won't be enabled when it exits and allows the tick to - * be frozen safely. + * Find the deepest state with ->enter_s2idle present that meets the + * specified latency limit, which guarantees that interrupts won't be + * enabled when it exits and allows the tick to be frozen safely. */ - index = find_deepest_state(drv, dev, U64_MAX, 0, true); + index = find_deepest_state(drv, dev, latency_limit_ns, 0, true); if (index > 0) { enter_s2idle_proper(drv, dev, index); local_irq_enable(); |