From: Frederic Weisbecker Date: Wed, 13 Apr 2016 13:56:50 +0000 (+0200) Subject: sched/fair: Gather CPU load functions under a more conventional namespace X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cee1afce3053e7aa0793fbd5f2e845fa2cef9e33;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git sched/fair: Gather CPU load functions under a more conventional namespace The CPU load update related functions have a weak naming convention currently, starting with update_cpu_load_*() which isn't ideal as "update" is a very generic concept. Since two of these functions are public already (and a third is to come) that's enough to introduce a more conventional naming scheme. So let's do the following rename instead: update_cpu_load_*() -> cpu_load_update_*() Signed-off-by: Frederic Weisbecker Signed-off-by: Peter Zijlstra (Intel) Cc: Byungchul Park Cc: Chris Metcalf Cc: Christoph Lameter Cc: Luiz Capitulino Cc: Mike Galbraith Cc: Paul E . McKenney Cc: Peter Zijlstra Cc: Rik van Riel Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1460555812-25375-2-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar --- diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt index f52f297cb406..9857606dd7b7 100644 --- a/Documentation/trace/ftrace.txt +++ b/Documentation/trace/ftrace.txt @@ -1562,12 +1562,12 @@ Doing the same with chrt -r 5 and function-trace set. -0 3dN.1 12us : menu_hrtimer_cancel <-tick_nohz_idle_exit -0 3dN.1 12us : ktime_get <-tick_nohz_idle_exit -0 3dN.1 12us : tick_do_update_jiffies64 <-tick_nohz_idle_exit - -0 3dN.1 13us : update_cpu_load_nohz <-tick_nohz_idle_exit - -0 3dN.1 13us : _raw_spin_lock <-update_cpu_load_nohz + -0 3dN.1 13us : cpu_load_update_nohz <-tick_nohz_idle_exit + -0 3dN.1 13us : _raw_spin_lock <-cpu_load_update_nohz -0 3dN.1 13us : add_preempt_count <-_raw_spin_lock - -0 3dN.2 13us : __update_cpu_load <-update_cpu_load_nohz - -0 3dN.2 14us : sched_avg_update <-__update_cpu_load - -0 3dN.2 14us : _raw_spin_unlock <-update_cpu_load_nohz + -0 3dN.2 13us : __cpu_load_update <-cpu_load_update_nohz + -0 3dN.2 14us : sched_avg_update <-__cpu_load_update + -0 3dN.2 14us : _raw_spin_unlock <-cpu_load_update_nohz -0 3dN.2 14us : sub_preempt_count <-_raw_spin_unlock -0 3dN.1 15us : calc_load_exit_idle <-tick_nohz_idle_exit -0 3dN.1 15us : touch_softlockup_watchdog <-tick_nohz_idle_exit diff --git a/include/linux/sched.h b/include/linux/sched.h index 13c1c1d07270..0b7f6028a50b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -178,9 +178,9 @@ extern void get_iowait_load(unsigned long *nr_waiters, unsigned long *load); extern void calc_global_load(unsigned long ticks); #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON) -extern void update_cpu_load_nohz(int active); +extern void cpu_load_update_nohz(int active); #else -static inline void update_cpu_load_nohz(int active) { } +static inline void cpu_load_update_nohz(int active) { } #endif extern void dump_cpu_task(int cpu); diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 06efbb9c9544..c98a2688f390 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2917,7 +2917,7 @@ void scheduler_tick(void) raw_spin_lock(&rq->lock); update_rq_clock(rq); curr->sched_class->task_tick(rq, curr, 0); - update_cpu_load_active(rq); + cpu_load_update_active(rq); calc_global_load_tick(rq); raw_spin_unlock(&rq->lock); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index c328bd77fe35..ecd81c4ebb56 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -4559,7 +4559,7 @@ decay_load_missed(unsigned long load, unsigned long missed_updates, int idx) } /** - * __update_cpu_load - update the rq->cpu_load[] statistics + * __cpu_load_update - update the rq->cpu_load[] statistics * @this_rq: The rq to update statistics for * @this_load: The current load * @pending_updates: The number of missed updates @@ -4594,7 +4594,7 @@ decay_load_missed(unsigned long load, unsigned long missed_updates, int idx) * see decay_load_misses(). For NOHZ_FULL we get to subtract and add the extra * term. See the @active paramter. */ -static void __update_cpu_load(struct rq *this_rq, unsigned long this_load, +static void __cpu_load_update(struct rq *this_rq, unsigned long this_load, unsigned long pending_updates, int active) { unsigned long tickless_load = active ? this_rq->cpu_load[0] : 0; @@ -4642,7 +4642,7 @@ static unsigned long weighted_cpuload(const int cpu) } #ifdef CONFIG_NO_HZ_COMMON -static void __update_cpu_load_nohz(struct rq *this_rq, +static void __cpu_load_update_nohz(struct rq *this_rq, unsigned long curr_jiffies, unsigned long load, int active) @@ -4657,7 +4657,7 @@ static void __update_cpu_load_nohz(struct rq *this_rq, * In the NOHZ_FULL case, we were non-idle, we should consider * its weighted load. */ - __update_cpu_load(this_rq, load, pending_updates, active); + __cpu_load_update(this_rq, load, pending_updates, active); } } @@ -4678,7 +4678,7 @@ static void __update_cpu_load_nohz(struct rq *this_rq, * Called from nohz_idle_balance() to update the load ratings before doing the * idle balance. */ -static void update_cpu_load_idle(struct rq *this_rq) +static void cpu_load_update_idle(struct rq *this_rq) { /* * bail if there's load or we're actually up-to-date. @@ -4686,13 +4686,13 @@ static void update_cpu_load_idle(struct rq *this_rq) if (weighted_cpuload(cpu_of(this_rq))) return; - __update_cpu_load_nohz(this_rq, READ_ONCE(jiffies), 0, 0); + __cpu_load_update_nohz(this_rq, READ_ONCE(jiffies), 0, 0); } /* * Called from tick_nohz_idle_exit() -- try and fix up the ticks we missed. */ -void update_cpu_load_nohz(int active) +void cpu_load_update_nohz(int active) { struct rq *this_rq = this_rq(); unsigned long curr_jiffies = READ_ONCE(jiffies); @@ -4702,7 +4702,7 @@ void update_cpu_load_nohz(int active) return; raw_spin_lock(&this_rq->lock); - __update_cpu_load_nohz(this_rq, curr_jiffies, load, active); + __cpu_load_update_nohz(this_rq, curr_jiffies, load, active); raw_spin_unlock(&this_rq->lock); } #endif /* CONFIG_NO_HZ */ @@ -4710,14 +4710,14 @@ void update_cpu_load_nohz(int active) /* * Called from scheduler_tick() */ -void update_cpu_load_active(struct rq *this_rq) +void cpu_load_update_active(struct rq *this_rq) { unsigned long load = weighted_cpuload(cpu_of(this_rq)); /* - * See the mess around update_cpu_load_idle() / update_cpu_load_nohz(). + * See the mess around cpu_load_update_idle() / cpu_load_update_nohz(). */ this_rq->last_load_update_tick = jiffies; - __update_cpu_load(this_rq, load, 1, 1); + __cpu_load_update(this_rq, load, 1, 1); } /* @@ -8031,7 +8031,7 @@ static void nohz_idle_balance(struct rq *this_rq, enum cpu_idle_type idle) if (time_after_eq(jiffies, rq->next_balance)) { raw_spin_lock_irq(&rq->lock); update_rq_clock(rq); - update_cpu_load_idle(rq); + cpu_load_update_idle(rq); raw_spin_unlock_irq(&rq->lock); rebalance_domains(rq, CPU_IDLE); } diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index a7cbad7b3ad2..32d9e22cfacf 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -31,9 +31,9 @@ extern void calc_global_load_tick(struct rq *this_rq); extern long calc_load_fold_active(struct rq *this_rq); #ifdef CONFIG_SMP -extern void update_cpu_load_active(struct rq *this_rq); +extern void cpu_load_update_active(struct rq *this_rq); #else -static inline void update_cpu_load_active(struct rq *this_rq) { } +static inline void cpu_load_update_active(struct rq *this_rq) { } #endif /* diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 58e3310c9b21..66bdc9acc283 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -806,7 +806,7 @@ static void tick_nohz_restart_sched_tick(struct tick_sched *ts, ktime_t now, int { /* Update jiffies first */ tick_do_update_jiffies64(now); - update_cpu_load_nohz(active); + cpu_load_update_nohz(active); calc_load_exit_idle(); touch_softlockup_watchdog_sched();