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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-13 04:42:15 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-13 04:42:15 +0200
commitb2e09f633a3994ee97fa6bc734b533d9c8e6ea0f (patch)
tree8f398d3f7ac19a4f4d64862086597f335d977203 /kernel/sched/sched.h
parentMerge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kern... (diff)
parentMerge commit '3cf2f34' into sched/core, to fix build error (diff)
downloadlinux-b2e09f633a3994ee97fa6bc734b533d9c8e6ea0f.tar.xz
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Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more scheduler updates from Ingo Molnar: "Second round of scheduler changes: - try-to-wakeup and IPI reduction speedups, from Andy Lutomirski - continued power scheduling cleanups and refactorings, from Nicolas Pitre - misc fixes and enhancements" * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/deadline: Delete extraneous extern for to_ratio() sched/idle: Optimize try-to-wake-up IPI sched/idle: Simplify wake_up_idle_cpu() sched/idle: Clear polling before descheduling the idle thread sched, trace: Add a tracepoint for IPI-less remote wakeups cpuidle: Set polling in poll_idle sched: Remove redundant assignment to "rt_rq" in update_curr_rt(...) sched: Rename capacity related flags sched: Final power vs. capacity cleanups sched: Remove remaining dubious usage of "power" sched: Let 'struct sched_group_power' care about CPU capacity sched/fair: Disambiguate existing/remaining "capacity" usage sched/fair: Change "has_capacity" to "has_free_capacity" sched/fair: Remove "power" from 'struct numa_stats' sched: Fix signedness bug in yield_to() sched/fair: Use time_after() in record_wakee() sched/balancing: Reduce the rate of needless idle load balancing sched/fair: Fix unlocked reads of some cfs_b->quota/period
Diffstat (limited to 'kernel/sched/sched.h')
-rw-r--r--kernel/sched/sched.h24
1 files changed, 15 insertions, 9 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index e47679b04d16..31cc02ebc54e 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -567,7 +567,7 @@ struct rq {
struct root_domain *rd;
struct sched_domain *sd;
- unsigned long cpu_power;
+ unsigned long cpu_capacity;
unsigned char idle_balance;
/* For active balancing */
@@ -670,6 +670,8 @@ extern int migrate_swap(struct task_struct *, struct task_struct *);
#ifdef CONFIG_SMP
+extern void sched_ttwu_pending(void);
+
#define rcu_dereference_check_sched_domain(p) \
rcu_dereference_check((p), \
lockdep_is_held(&sched_domains_mutex))
@@ -728,15 +730,15 @@ DECLARE_PER_CPU(struct sched_domain *, sd_numa);
DECLARE_PER_CPU(struct sched_domain *, sd_busy);
DECLARE_PER_CPU(struct sched_domain *, sd_asym);
-struct sched_group_power {
+struct sched_group_capacity {
atomic_t ref;
/*
- * CPU power of this group, SCHED_LOAD_SCALE being max power for a
- * single CPU.
+ * CPU capacity of this group, SCHED_LOAD_SCALE being max capacity
+ * for a single CPU.
*/
- unsigned int power, power_orig;
+ unsigned int capacity, capacity_orig;
unsigned long next_update;
- int imbalance; /* XXX unrelated to power but shared group state */
+ int imbalance; /* XXX unrelated to capacity but shared group state */
/*
* Number of busy cpus in this group.
*/
@@ -750,7 +752,7 @@ struct sched_group {
atomic_t ref;
unsigned int group_weight;
- struct sched_group_power *sgp;
+ struct sched_group_capacity *sgc;
/*
* The CPUs this group covers.
@@ -773,7 +775,7 @@ static inline struct cpumask *sched_group_cpus(struct sched_group *sg)
*/
static inline struct cpumask *sched_group_mask(struct sched_group *sg)
{
- return to_cpumask(sg->sgp->cpumask);
+ return to_cpumask(sg->sgc->cpumask);
}
/**
@@ -787,6 +789,10 @@ static inline unsigned int group_first_cpu(struct sched_group *group)
extern int group_balance_cpu(struct sched_group *sg);
+#else
+
+static inline void sched_ttwu_pending(void) { }
+
#endif /* CONFIG_SMP */
#include "stats.h"
@@ -1167,7 +1173,7 @@ extern const struct sched_class idle_sched_class;
#ifdef CONFIG_SMP
-extern void update_group_power(struct sched_domain *sd, int cpu);
+extern void update_group_capacity(struct sched_domain *sd, int cpu);
extern void trigger_load_balance(struct rq *rq);