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| author | Mel Gorman <mgorman@techsingularity.net> | 2021-01-25 09:59:08 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-02-17 14:06:59 +0100 |
| commit | 6cd56ef1df399a004f90ecb682427f9964969fc9 (patch) | |
| tree | 9e6f4c948d9c2d161d640b3f88e762dde8bcb9bc /kernel/sched/fair.c | |
| parent | Merge tag 'v5.11' into sched/core, to pick up fixes & refresh the branch (diff) | |
| download | linux-6cd56ef1df399a004f90ecb682427f9964969fc9.tar.xz linux-6cd56ef1df399a004f90ecb682427f9964969fc9.zip | |
sched/fair: Remove select_idle_smt()
In order to make the next patch more readable, and to quantify the
actual effectiveness of this pass, start by removing it.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210125085909.4600-4-mgorman@techsingularity.net
Diffstat (limited to '')
| -rw-r--r-- | kernel/sched/fair.c | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 4c18ef6c1542..6a0fc8a2dc67 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -6114,27 +6114,6 @@ static int select_idle_core(struct task_struct *p, struct sched_domain *sd, int return -1; } -/* - * Scan the local SMT mask for idle CPUs. - */ -static int select_idle_smt(struct task_struct *p, struct sched_domain *sd, int target) -{ - int cpu; - - if (!static_branch_likely(&sched_smt_present)) - return -1; - - for_each_cpu(cpu, cpu_smt_mask(target)) { - if (!cpumask_test_cpu(cpu, p->cpus_ptr) || - !cpumask_test_cpu(cpu, sched_domain_span(sd))) - continue; - if (available_idle_cpu(cpu) || sched_idle_cpu(cpu)) - return cpu; - } - - return -1; -} - #else /* CONFIG_SCHED_SMT */ static inline int select_idle_core(struct task_struct *p, struct sched_domain *sd, int target) @@ -6142,11 +6121,6 @@ static inline int select_idle_core(struct task_struct *p, struct sched_domain *s return -1; } -static inline int select_idle_smt(struct task_struct *p, struct sched_domain *sd, int target) -{ - return -1; -} - #endif /* CONFIG_SCHED_SMT */ /* @@ -6336,10 +6310,6 @@ static int select_idle_sibling(struct task_struct *p, int prev, int target) if ((unsigned)i < nr_cpumask_bits) return i; - i = select_idle_smt(p, sd, target); - if ((unsigned)i < nr_cpumask_bits) - return i; - return target; } |