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sched: Simplify set_task_cpu()
Rearrange code a bit now that its a simpler function. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> LKML-Reference: <20091216170518.269101883@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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1 changed files with 5 additions and 8 deletions
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@ -2034,11 +2034,8 @@ task_hot(struct task_struct *p, u64 now, struct sched_domain *sd)
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return delta < (s64)sysctl_sched_migration_cost;
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}
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void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
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{
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int old_cpu = task_cpu(p);
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#ifdef CONFIG_SCHED_DEBUG
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/*
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* We should never call set_task_cpu() on a blocked task,
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@ -2049,11 +2046,11 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
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trace_sched_migrate_task(p, new_cpu);
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if (old_cpu != new_cpu) {
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if (task_cpu(p) == new_cpu)
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return;
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p->se.nr_migrations++;
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perf_sw_event(PERF_COUNT_SW_CPU_MIGRATIONS,
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1, 1, NULL, 0);
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}
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perf_sw_event(PERF_COUNT_SW_CPU_MIGRATIONS, 1, 1, NULL, 0);
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__set_task_cpu(p, new_cpu);
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}
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