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sched debug: remove NULL checking in print_cfs/rt_rq()
Impact: cleanup cfs->tg is initialized in init_tg_cfs_entry() with tg != NULL, and will never be invalidated to NULL. And the underlying cgroup of a valid task_group is always valid. Same for rt->tg. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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1 changed files with 2 additions and 12 deletions
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@ -121,14 +121,9 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
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#if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
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char path[128] = "";
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struct cgroup *cgroup = NULL;
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struct task_group *tg = cfs_rq->tg;
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if (tg)
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cgroup = tg->css.cgroup;
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if (cgroup)
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cgroup_path(cgroup, path, sizeof(path));
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cgroup_path(tg->css.cgroup, path, sizeof(path));
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SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, path);
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#else
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@ -193,14 +188,9 @@ void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
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{
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#if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_RT_GROUP_SCHED)
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char path[128] = "";
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struct cgroup *cgroup = NULL;
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struct task_group *tg = rt_rq->tg;
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if (tg)
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cgroup = tg->css.cgroup;
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if (cgroup)
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cgroup_path(cgroup, path, sizeof(path));
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cgroup_path(tg->css.cgroup, path, sizeof(path));
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SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, path);
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#else
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