#include <linux/kallsyms.h>
#include <linux/utsname.h>
+static DEFINE_SPINLOCK(sched_debug_lock);
+
/*
* This allows printing both to /proc/sched_debug and
* to the console
#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)
+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)
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);
+ PN(se->statistics.wait_start);
+ PN(se->statistics.sleep_start);
+ PN(se->statistics.block_start);
+ PN(se->statistics.sleep_max);
+ PN(se->statistics.block_max);
+ PN(se->statistics.exec_max);
+ PN(se->statistics.slice_max);
+ PN(se->statistics.wait_max);
+ PN(se->statistics.wait_sum);
+ P(se->statistics.wait_count);
#endif
P(se->load.weight);
#undef PN
}
#endif
+#ifdef CONFIG_CGROUP_SCHED
+static char group_path[PATH_MAX];
+
+static char *task_group_path(struct task_group *tg)
+{
+ if (autogroup_path(tg, group_path, PATH_MAX))
+ return group_path;
+
+ /*
+ * May be NULL if the underlying cgroup isn't fully-created yet
+ */
+ if (!tg->css.cgroup) {
+ group_path[0] = '\0';
+ return group_path;
+ }
+ cgroup_path(tg->css.cgroup, group_path, PATH_MAX);
+ return group_path;
+}
+#endif
+
static void
print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
{
SEQ_printf(m, "%9Ld.%06ld %9Ld.%06ld %9Ld.%06ld",
SPLIT_NS(p->se.vruntime),
SPLIT_NS(p->se.sum_exec_runtime),
- SPLIT_NS(p->se.sum_sleep_runtime));
+ SPLIT_NS(p->se.statistics.sum_sleep_runtime));
#else
SEQ_printf(m, "%15Ld %15Ld %15Ld.%06ld %15Ld.%06ld %15Ld.%06ld",
0LL, 0LL, 0LL, 0L, 0LL, 0L, 0LL, 0L);
#endif
-
#ifdef CONFIG_CGROUP_SCHED
- {
- char path[64];
-
- cgroup_path(task_group(p)->css.cgroup, path, sizeof(path));
- SEQ_printf(m, " %s", path);
- }
+ SEQ_printf(m, " %s", task_group_path(task_group(p)));
#endif
+
SEQ_printf(m, "\n");
}
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,
struct sched_entity *last;
unsigned long flags;
-#if defined(CONFIG_CGROUP_SCHED) && defined(CONFIG_FAIR_GROUP_SCHED)
- char path[128];
- struct task_group *tg = cfs_rq->tg;
-
- 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);
- }
+#ifdef CONFIG_FAIR_GROUP_SCHED
+ SEQ_printf(m, "\ncfs_rq[%d]:%s\n", cpu, task_group_path(cfs_rq->tg));
#else
SEQ_printf(m, "\ncfs_rq[%d]:\n", cpu);
#endif
spread0 = min_vruntime - rq0_min_vruntime;
SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "spread0",
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);
-
SEQ_printf(m, " .%-30s: %d\n", "nr_spread_over",
cfs_rq->nr_spread_over);
+ 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_FAIR_GROUP_SCHED
#ifdef CONFIG_SMP
- SEQ_printf(m, " .%-30s: %lu\n", "shares", cfs_rq->shares);
+ SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "load_avg",
+ SPLIT_NS(cfs_rq->load_avg));
+ SEQ_printf(m, " .%-30s: %Ld.%06ld\n", "load_period",
+ SPLIT_NS(cfs_rq->load_period));
+ SEQ_printf(m, " .%-30s: %ld\n", "load_contrib",
+ cfs_rq->load_contribution);
+ SEQ_printf(m, " .%-30s: %d\n", "load_tg",
+ atomic_read(&cfs_rq->tg->load_weight));
#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];
- struct task_group *tg = rt_rq->tg;
-
- task_group_path(tg, path, sizeof(path));
-
- SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, path);
+#ifdef CONFIG_RT_GROUP_SCHED
+ SEQ_printf(m, "\nrt_rq[%d]:%s\n", cpu, task_group_path(rt_rq->tg));
#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) \
#undef P
}
+extern __read_mostly int sched_clock_running;
+
static void print_cpu(struct seq_file *m, int cpu)
{
struct rq *rq = cpu_rq(cpu);
+ unsigned long flags;
#ifdef CONFIG_X86
{
P(ttwu_count);
P(ttwu_local);
- P(bkl_count);
+ SEQ_printf(m, " .%-30s: %d\n", "bkl_count",
+ rq->rq_sched_info.bkl_count);
#undef P
+#undef P64
#endif
+ spin_lock_irqsave(&sched_debug_lock, flags);
print_cfs_stats(m, cpu);
print_rt_stats(m, cpu);
+ rcu_read_lock();
print_rq(m, rq, cpu);
+ rcu_read_unlock();
+ spin_unlock_irqrestore(&sched_debug_lock, flags);
}
static const char *sched_tunable_scaling_names[] = {
static int sched_debug_show(struct seq_file *m, void *v)
{
- u64 now = ktime_to_ns(ktime_get());
+ u64 ktime, sched_clk, cpu_clk;
+ unsigned long flags;
int cpu;
- SEQ_printf(m, "Sched Debug Version: v0.09, %s %.*s\n",
+ local_irq_save(flags);
+ ktime = ktime_to_ns(ktime_get());
+ sched_clk = sched_clock();
+ cpu_clk = local_clock();
+ local_irq_restore(flags);
+
+ SEQ_printf(m, "Sched Debug Version: v0.10, %s %.*s\n",
init_utsname()->release,
(int)strcspn(init_utsname()->version, " "),
init_utsname()->version);
- SEQ_printf(m, "now at %Lu.%06ld msecs\n", SPLIT_NS(now));
+#define P(x) \
+ SEQ_printf(m, "%-40s: %Ld\n", #x, (long long)(x))
+#define PN(x) \
+ SEQ_printf(m, "%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
+ PN(ktime);
+ PN(sched_clk);
+ PN(cpu_clk);
+ P(jiffies);
+#ifdef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
+ P(sched_clock_stable);
+#endif
+#undef PN
+#undef P
+
+ SEQ_printf(m, "\n");
+ SEQ_printf(m, "sysctl_sched\n");
#define P(x) \
SEQ_printf(m, " .%-40s: %Ld\n", #x, (long long)(x))
#define PN(x) \
SEQ_printf(m, " .%-40s: %Ld.%06ld\n", #x, SPLIT_NS(x))
- P(jiffies);
PN(sysctl_sched_latency);
PN(sysctl_sched_min_granularity);
PN(sysctl_sched_wakeup_granularity);
- PN(sysctl_sched_child_runs_first);
+ P(sysctl_sched_child_runs_first);
P(sysctl_sched_features);
#undef PN
#undef P
void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
{
unsigned long nr_switches;
- unsigned long flags;
- int num_threads = 1;
-
- if (lock_task_sighand(p, &flags)) {
- num_threads = atomic_read(&p->signal->count);
- unlock_task_sighand(p, &flags);
- }
- SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid, num_threads);
+ SEQ_printf(m, "%s (%d, #threads: %d)\n", p->comm, p->pid,
+ get_nr_threads(p));
SEQ_printf(m,
"---------------------------------------------------------\n");
#define __P(F) \
PN(se.exec_start);
PN(se.vruntime);
PN(se.sum_exec_runtime);
- PN(se.avg_overlap);
- PN(se.avg_wakeup);
nr_switches = p->nvcsw + p->nivcsw;
#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);
- PN(se.iowait_sum);
- P(se.iowait_count);
+ PN(se.statistics.wait_start);
+ PN(se.statistics.sleep_start);
+ PN(se.statistics.block_start);
+ PN(se.statistics.sleep_max);
+ PN(se.statistics.block_max);
+ PN(se.statistics.exec_max);
+ PN(se.statistics.slice_max);
+ PN(se.statistics.wait_max);
+ PN(se.statistics.wait_sum);
+ P(se.statistics.wait_count);
+ PN(se.statistics.iowait_sum);
+ P(se.statistics.iowait_count);
P(sched_info.bkl_count);
P(se.nr_migrations);
- P(se.nr_migrations_cold);
- P(se.nr_failed_migrations_affine);
- P(se.nr_failed_migrations_running);
- P(se.nr_failed_migrations_hot);
- P(se.nr_forced_migrations);
- P(se.nr_wakeups);
- P(se.nr_wakeups_sync);
- P(se.nr_wakeups_migrate);
- P(se.nr_wakeups_local);
- P(se.nr_wakeups_remote);
- P(se.nr_wakeups_affine);
- P(se.nr_wakeups_affine_attempts);
- P(se.nr_wakeups_passive);
- P(se.nr_wakeups_idle);
+ P(se.statistics.nr_migrations_cold);
+ P(se.statistics.nr_failed_migrations_affine);
+ P(se.statistics.nr_failed_migrations_running);
+ P(se.statistics.nr_failed_migrations_hot);
+ P(se.statistics.nr_forced_migrations);
+ P(se.statistics.nr_wakeups);
+ P(se.statistics.nr_wakeups_sync);
+ P(se.statistics.nr_wakeups_migrate);
+ P(se.statistics.nr_wakeups_local);
+ P(se.statistics.nr_wakeups_remote);
+ P(se.statistics.nr_wakeups_affine);
+ P(se.statistics.nr_wakeups_affine_attempts);
+ P(se.statistics.nr_wakeups_passive);
+ P(se.statistics.nr_wakeups_idle);
{
u64 avg_atom, avg_per_cpu;
void proc_sched_set_task(struct task_struct *p)
{
#ifdef CONFIG_SCHEDSTATS
- p->se.wait_max = 0;
- p->se.wait_sum = 0;
- p->se.wait_count = 0;
- p->se.iowait_sum = 0;
- p->se.iowait_count = 0;
- p->se.sleep_max = 0;
- p->se.sum_sleep_runtime = 0;
- p->se.block_max = 0;
- p->se.exec_max = 0;
- p->se.slice_max = 0;
- p->se.nr_migrations = 0;
- p->se.nr_migrations_cold = 0;
- p->se.nr_failed_migrations_affine = 0;
- p->se.nr_failed_migrations_running = 0;
- p->se.nr_failed_migrations_hot = 0;
- p->se.nr_forced_migrations = 0;
- p->se.nr_wakeups = 0;
- p->se.nr_wakeups_sync = 0;
- p->se.nr_wakeups_migrate = 0;
- p->se.nr_wakeups_local = 0;
- p->se.nr_wakeups_remote = 0;
- p->se.nr_wakeups_affine = 0;
- p->se.nr_wakeups_affine_attempts = 0;
- p->se.nr_wakeups_passive = 0;
- p->se.nr_wakeups_idle = 0;
- p->sched_info.bkl_count = 0;
+ memset(&p->se.statistics, 0, sizeof(p->se.statistics));
#endif
- p->se.sum_exec_runtime = 0;
- p->se.prev_sum_exec_runtime = 0;
- p->nvcsw = 0;
- p->nivcsw = 0;
}
projects / linux-flexiantxendom0-natty.git / blobdiff