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: Peter Zijlstra (Intel) <pet...@infradead.org>
---
kernel/sched/fair.c | 30 ------------------------------
1 file changed, 30 deletions(-)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6103,27 +6103,6 @@ static int select_idle_core(struct task_
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 */
#define sched_smt_weight 1
@@ -6133,11 +6112,6 @@ static inline int select_idle_core(struc
return -1;
}
-static inline int select_idle_smt(struct task_struct *p, struct sched_domain
*sd, int target)
-{
- return -1;
-}
-
#endif /* CONFIG_SCHED_SMT */
#define sis_min_cores 2
@@ -6334,10 +6308,6 @@ static int select_idle_sibling(struct ta
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;
}
