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sched: debug: add some rt debug output 

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: "Daniel K." <dk@uw.no>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2008-06-19 14:22:24 +02:00 committed by Ingo Molnar
parent 1cdad71537
commit ada18de2eb
2 changed files with 51 additions and 3 deletions
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40
kernel/sched_debug.c
View File

@ -119,9 +119,7 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
struct sched_entity *last; struct sched_entity *last;
unsigned long flags; unsigned long flags;
#if !defined(CONFIG_CGROUP_SCHED) || !defined(CONFIG_USER_SCHED) #if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
#else
char path[128] = ""; char path[128] = "";
struct cgroup *cgroup = NULL; struct cgroup *cgroup = NULL;
struct task_group *tg = cfs_rq->tg; struct task_group *tg = cfs_rq->tg;
@ -133,6 +131,8 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
cgroup_path(cgroup, path, sizeof(path)); cgroup_path(cgroup, path, sizeof(path));
SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, path); SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, path);
#else
SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
#endif #endif
SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock", SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "exec_clock",
@ -169,6 +169,39 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
cfs_rq->nr_spread_over); cfs_rq->nr_spread_over);
} }
void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq)
{
#if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_RT_GROUP_SCHED)
char path[128] = "";
struct cgroup *cgroup = NULL;
struct task_group *tg = rt_rq->tg;
if (tg)
cgroup = tg->css.cgroup;
if (cgroup)
cgroup_path(cgroup, path, sizeof(path));
SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, path);
#else
SEQ_printf(m, "\nrt_rq[%d]:\n", cpu);
#endif
#define P(x) \
SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(rt_rq->x))
#define PN(x) \
SEQ_printf(m, " .%-30s: %Ld.%06ld\n", #x, SPLIT_NS(rt_rq->x))
P(rt_nr_running);
P(rt_throttled);
PN(rt_time);
PN(rt_runtime);
#undef PN
#undef P
}
static void print_cpu(struct seq_file *m, int cpu) static void print_cpu(struct seq_file *m, int cpu)
{ {
struct rq *rq = &per_cpu(runqueues, cpu); struct rq *rq = &per_cpu(runqueues, cpu);
@ -208,6 +241,7 @@ static void print_cpu(struct seq_file *m, int cpu)
#undef PN #undef PN
print_cfs_stats(m, cpu); print_cfs_stats(m, cpu);
print_rt_stats(m, cpu);
print_rq(m, rq, cpu); print_rq(m, rq, cpu);
} }

14
kernel/sched_rt.c
View File

@ -1444,3 +1444,17 @@ static const struct sched_class rt_sched_class = {
.prio_changed = prio_changed_rt, .prio_changed = prio_changed_rt,
.switched_to = switched_to_rt, .switched_to = switched_to_rt,
}; };
#ifdef CONFIG_SCHED_DEBUG
extern void print_rt_rq(struct seq_file *m, int cpu, struct rt_rq *rt_rq);
static void print_rt_stats(struct seq_file *m, int cpu)
{
struct rt_rq *rt_rq;
rcu_read_lock();
for_each_leaf_rt_rq(rt_rq, cpu_rq(cpu))
print_rt_rq(m, cpu, rt_rq);
rcu_read_unlock();
}
#endif