diff options
| -rw-r--r-- | kernel/sched/core.c | 19 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 8 | ||||
| -rw-r--r-- | kernel/sched/sched.h | 23 |
3 files changed, 7 insertions, 43 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 692c948ae333..737381d601e6 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7422,22 +7422,6 @@ int sched_cpu_dying(unsigned int cpu) } #endif -#ifdef CONFIG_SCHED_SMT -DEFINE_STATIC_KEY_FALSE(sched_smt_present); - -static void sched_init_smt(void) -{ - /* - * We've enumerated all CPUs and will assume that if any CPU - * has SMT siblings, CPU0 will too. - */ - if (cpumask_weight(cpu_smt_mask(0)) > 1) - static_branch_enable(&sched_smt_present); -} -#else -static inline void sched_init_smt(void) { } -#endif - void __init sched_init_smp(void) { cpumask_var_t non_isolated_cpus; @@ -7467,9 +7451,6 @@ void __init sched_init_smp(void) init_sched_rt_class(); init_sched_dl_class(); - - sched_init_smt(); - sched_smp_initialized = true; } diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index c242944f5cbd..15fdae7531e9 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5376,7 +5376,7 @@ static inline bool test_idle_cores(int cpu, bool def) * Since SMT siblings share all cache levels, inspecting this limited remote * state should be fairly cheap. */ -void __update_idle_core(struct rq *rq) +void update_idle_core(struct rq *rq) { int core = cpu_of(rq); int cpu; @@ -5408,9 +5408,6 @@ static int select_idle_core(struct task_struct *p, struct sched_domain *sd, int struct cpumask *cpus = this_cpu_cpumask_var_ptr(select_idle_mask); int core, cpu, wrap; - if (!static_branch_likely(&sched_smt_present)) - return -1; - if (!test_idle_cores(target, false)) return -1; @@ -5444,9 +5441,6 @@ static int select_idle_smt(struct task_struct *p, struct sched_domain *sd, int t { int cpu; - if (!static_branch_likely(&sched_smt_present)) - return -1; - for_each_cpu(cpu, cpu_smt_mask(target)) { if (!cpumask_test_cpu(cpu, tsk_cpus_allowed(p))) continue; diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 055f935d4421..ad77d666583c 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -43,6 +43,12 @@ extern void cpu_load_update_active(struct rq *this_rq); static inline void cpu_load_update_active(struct rq *this_rq) { } #endif +#ifdef CONFIG_SCHED_SMT +extern void update_idle_core(struct rq *rq); +#else +static inline void update_idle_core(struct rq *rq) { } +#endif + /* * Helpers for converting nanosecond timing to jiffy resolution */ @@ -731,23 +737,6 @@ static inline int cpu_of(struct rq *rq) #endif } - -#ifdef CONFIG_SCHED_SMT - -extern struct static_key_false sched_smt_present; - -extern void __update_idle_core(struct rq *rq); - -static inline void update_idle_core(struct rq *rq) -{ - if (static_branch_unlikely(&sched_smt_present)) - __update_idle_core(rq); -} - -#else -static inline void update_idle_core(struct rq *rq) { } -#endif - DECLARE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues); #define cpu_rq(cpu) (&per_cpu(runqueues, (cpu))) |