Hi all,
Today's linux-next merge of the tip tree got a conflict in
kernel/sched/idle.c between commit 52c324f8a87b ("cpuidle: Combine
cpuidle_enabled() with cpuidle_select()") from the pm tree and commit
37352273ad48 ("sched/idle: Reflow cpuidle_idle_call()") from the tip
tree.I fixed it up (I hope - see below) and can carry the fix as necessary (no action is required). -- Cheers, Stephen Rothwell [email protected] diff --cc kernel/sched/idle.c index a8f12247ce7c,34083c9ac976..000000000000 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@@ -101,77 -98,74 +98,69 @@@ static void cpuidle_idle_call(void rcu_idle_enter(); /* - * Check if the cpuidle framework is ready, otherwise fallback - * to the default arch specific idle method + * Ask the cpuidle framework to choose a convenient idle state. + * Fall back to the default arch specific idle method on errors. */ - if (cpuidle_enabled(drv, dev)) { + next_state = cpuidle_select(drv, dev); + - ret = next_state; - if (ret >= 0) { ++ if (next_state < 0) { + use_default: /* - * The idle task must be scheduled, it is pointless to - * go to idle, just update no idle residency and get - * out of this function + * We can't use the cpuidle framework, let's use the default + * idle routine. */ - if (current_clr_polling_and_test()) { - dev->last_residency = 0; - entered_state = next_state; + if (current_clr_polling_and_test()) local_irq_enable(); - } else { - broadcast = !!(drv->states[next_state].flags & - CPUIDLE_FLAG_TIMER_STOP); - - if (broadcast) - /* - * Tell the time framework to switch - * to a broadcast timer because our - * local timer will be shutdown. If a - * local timer is used from another - * cpu as a broadcast timer, this call - * may fail if it is not available - */ - ret = clockevents_notify( - CLOCK_EVT_NOTIFY_BROADCAST_ENTER, - &dev->cpu); - - if (ret >= 0) { - trace_cpu_idle_rcuidle(next_state, dev->cpu); - - /* - * Enter the idle state previously - * returned by the governor - * decision. This function will block - * until an interrupt occurs and will - * take care of re-enabling the local - * interrupts - */ - entered_state = cpuidle_enter(drv, dev, - next_state); - - trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, - dev->cpu); - - if (broadcast) - clockevents_notify( - CLOCK_EVT_NOTIFY_BROADCAST_EXIT, - &dev->cpu); - - /* - * Give the governor an opportunity to reflect on the - * outcome - */ - cpuidle_reflect(dev, entered_state); - } - } + else + arch_cpu_idle(); + + goto exit_idle; + } + + /* - * Ask the governor to choose an idle state it thinks - * it is convenient to go to. There is *always* a - * convenient idle state - */ - next_state = cpuidle_select(drv, dev); - - /* + * The idle task must be scheduled, it is pointless to + * go to idle, just update no idle residency and get + * out of this function + */ + if (current_clr_polling_and_test()) { + dev->last_residency = 0; + entered_state = next_state; + local_irq_enable(); + goto exit_idle; } + broadcast = !!(drv->states[next_state].flags & CPUIDLE_FLAG_TIMER_STOP); + /* - * We can't use the cpuidle framework, let's use the default - * idle routine + * Tell the time framework to switch to a broadcast timer + * because our local timer will be shutdown. If a local timer + * is used from another cpu as a broadcast timer, this call may + * fail if it is not available */ - if (ret < 0) - arch_cpu_idle(); + if (broadcast && - clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu)) ++ clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu) < 0) + goto use_default; + trace_cpu_idle_rcuidle(next_state, dev->cpu); + + /* + * Enter the idle state previously returned by the governor decision. + * This function will block until an interrupt occurs and will take + * care of re-enabling the local interrupts + */ + entered_state = cpuidle_enter(drv, dev, next_state); + + trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu); + + if (broadcast) + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu); + + /* + * Give the governor an opportunity to reflect on the outcome + */ + cpuidle_reflect(dev, entered_state); + + exit_idle: __current_set_polling(); /*
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