Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[safe/jmp/linux-2.6] / kernel / sched_debug.c

diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index d25cefe..16eeba4 100644 (file)
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -53,6 +53,40 @@ static unsigned long nsec_low(unsigned long long nsec)
 
 #define SPLIT_NS(x) nsec_high(x), nsec_low(x)
 
+#ifdef CONFIG_FAIR_GROUP_SCHED
+static void print_cfs_group_stats(struct seq_file *m, int cpu,
+               struct task_group *tg)
+{
+       struct sched_entity *se = tg->se[cpu];
+       if (!se)
+               return;
+
+#define P(F) \
+       SEQ_printf(m, "  .%-30s: %lld\n", #F, (long long)F)
+#define PN(F) \
+       SEQ_printf(m, "  .%-30s: %lld.%06ld\n", #F, SPLIT_NS((long long)F))
+
+       PN(se->exec_start);
+       PN(se->vruntime);
+       PN(se->sum_exec_runtime);
+#ifdef CONFIG_SCHEDSTATS
+       PN(se->wait_start);
+       PN(se->sleep_start);
+       PN(se->block_start);
+       PN(se->sleep_max);
+       PN(se->block_max);
+       PN(se->exec_max);
+       PN(se->slice_max);
+       PN(se->wait_max);
+       PN(se->wait_sum);
+       P(se->wait_count);
+#endif
+       P(se->load.weight);
+#undef PN
+#undef P
+}
+#endif
+
 static void
 print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
 {
@@ -111,6 +145,19 @@ static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
        read_unlock_irqrestore(&tasklist_lock, flags);
 }
 
+#if defined(CONFIG_CGROUP_SCHED) && \
+       (defined(CONFIG_FAIR_GROUP_SCHED) || defined(CONFIG_RT_GROUP_SCHED))
+static void task_group_path(struct task_group *tg, char *buf, int buflen)
+{
+       /* may be NULL if the underlying cgroup isn't fully-created yet */
+       if (!tg->css.cgroup) {
+               buf[0] = '\0';
+               return;
+       }
+       cgroup_path(tg->css.cgroup, buf, buflen);
+}
+#endif
+
 void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 {
        s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1,
@@ -120,16 +167,20 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
        unsigned long flags;
 
 #if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
-       char path[128] = "";
+       char path[128];
        struct task_group *tg = cfs_rq->tg;
 
-       cgroup_path(tg->css.cgroup, path, sizeof(path));
+       task_group_path(tg, path, sizeof(path));
 
        SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, path);
+#elif defined(CONFIG_USER_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
+       {
+               uid_t uid = cfs_rq->tg->uid;
+               SEQ_printf(m, "\ncfs_rq[%d] for UID: %u\n", cpu, uid);
+       }
 #else
        SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
 #endif
-
        SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "exec_clock",
                        SPLIT_NS(cfs_rq->exec_clock));
 
@@ -139,7 +190,7 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
        last = __pick_last_entity(cfs_rq);
        if (last)
                max_vruntime = last->vruntime;
-       min_vruntime = rq->cfs.min_vruntime;
+       min_vruntime = cfs_rq->min_vruntime;
        rq0_min_vruntime = per_cpu(runqueues, 0).cfs.min_vruntime;
        spin_unlock_irqrestore(&rq->lock, flags);
        SEQ_printf(m, "  .%-30s: %Ld.%06ld\n", "MIN_vruntime",
@@ -156,41 +207,24 @@ void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
                        SPLIT_NS(spread0));
        SEQ_printf(m, "  .%-30s: %ld\n", "nr_running", cfs_rq->nr_running);
        SEQ_printf(m, "  .%-30s: %ld\n", "load", cfs_rq->load.weight);
-#ifdef CONFIG_SCHEDSTATS
-#define P(n) SEQ_printf(m, "  .%-30s: %d\n", #n, rq->n);
-
-       P(yld_exp_empty);
-       P(yld_act_empty);
-       P(yld_both_empty);
-       P(yld_count);
-
-       P(sched_switch);
-       P(sched_count);
-       P(sched_goidle);
-
-       P(ttwu_count);
-       P(ttwu_local);
-
-       P(bkl_count);
 
-#undef P
-#endif
-       SEQ_printf(m, "  .%-30s: %ld\n", "nr_spread_over",
+       SEQ_printf(m, "  .%-30s: %d\n", "nr_spread_over",
                        cfs_rq->nr_spread_over);
 #ifdef CONFIG_FAIR_GROUP_SCHED
 #ifdef CONFIG_SMP
        SEQ_printf(m, "  .%-30s: %lu\n", "shares", cfs_rq->shares);
 #endif
+       print_cfs_group_stats(m, cpu, cfs_rq->tg);
 #endif
 }
 
 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] = "";
+       char path[128];
        struct task_group *tg = rt_rq->tg;
 
-       cgroup_path(tg->css.cgroup, path, sizeof(path));
+       task_group_path(tg, path, sizeof(path));
 
        SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, path);
 #else
@@ -250,6 +284,25 @@ static void print_cpu(struct seq_file *m, int cpu)
 #undef P
 #undef PN
 
+#ifdef CONFIG_SCHEDSTATS
+#define P(n) SEQ_printf(m, "  .%-30s: %d\n", #n, rq->n);
+
+       P(yld_exp_empty);
+       P(yld_act_empty);
+       P(yld_both_empty);
+       P(yld_count);
+
+       P(sched_switch);
+       P(sched_count);
+       P(sched_goidle);
+
+       P(ttwu_count);
+       P(ttwu_local);
+
+       P(bkl_count);
+
+#undef P
+#endif
        print_cfs_stats(m, cpu);
        print_rt_stats(m, cpu);
 
@@ -261,7 +314,7 @@ static int sched_debug_show(struct seq_file *m, void *v)
        u64 now = ktime_to_ns(ktime_get());
        int cpu;
 
-       SEQ_printf(m, "Sched Debug Version: v0.07, %s %.*s\n",
+       SEQ_printf(m, "Sched Debug Version: v0.08, %s %.*s\n",
                init_utsname()->release,
                (int)strcspn(init_utsname()->version, " "),
                init_utsname()->version);
@@ -412,10 +465,11 @@ void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
 #undef __P
 
        {
+               unsigned int this_cpu = raw_smp_processor_id();
                u64 t0, t1;
 
-               t0 = sched_clock();
-               t1 = sched_clock();
+               t0 = cpu_clock(this_cpu);
+               t1 = cpu_clock(this_cpu);
                SEQ_printf(m, "%-35s:%21Ld\n",
                           "clock-delta", (long long)(t1-t0));
        }