X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fsched_debug.c;h=e3b62324ac3130dce15eeeaa7b4e47a7388ed2ab;hb=bbdba7c0e1161934ae881ad00e4db49830f5ef59;hp=0eca442b77922b8702ef0167f8e4361d0fd5ffe1;hpb=1ed4395035a6791ebbbf618429a58ab9c207cc83;p=linux-2.6 diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c index 0eca442b77..e3b62324ac 100644 --- a/kernel/sched_debug.c +++ b/kernel/sched_debug.c @@ -29,40 +29,39 @@ } while (0) static void -print_task(struct seq_file *m, struct rq *rq, struct task_struct *p, u64 now) +print_task(struct seq_file *m, struct rq *rq, struct task_struct *p) { if (rq->curr == p) SEQ_printf(m, "R"); else SEQ_printf(m, " "); - SEQ_printf(m, "%15s %5d %15Ld %13Ld %13Ld %9Ld %5d " - "%15Ld %15Ld %15Ld %15Ld %15Ld\n", + SEQ_printf(m, "%15s %5d %15Ld %13Ld %5d ", p->comm, p->pid, (long long)p->se.fair_key, - (long long)(p->se.fair_key - rq->cfs.fair_clock), - (long long)p->se.wait_runtime, (long long)(p->nvcsw + p->nivcsw), - p->prio, + p->prio); +#ifdef CONFIG_SCHEDSTATS + SEQ_printf(m, "%15Ld %15Ld %15Ld\n", + (long long)p->se.vruntime, (long long)p->se.sum_exec_runtime, - (long long)p->se.sum_wait_runtime, - (long long)p->se.sum_sleep_runtime, - (long long)p->se.wait_runtime_overruns, - (long long)p->se.wait_runtime_underruns); + (long long)p->se.sum_sleep_runtime); +#else + SEQ_printf(m, "%15Ld %15Ld %15Ld %15Ld %15Ld\n", + 0LL, 0LL, 0LL, 0LL, 0LL); +#endif } -static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu, u64 now) +static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu) { struct task_struct *g, *p; SEQ_printf(m, "\nrunnable tasks:\n" - " task PID tree-key delta waiting" - " switches prio" - " sum-exec sum-wait sum-sleep" - " wait-overrun wait-underrun\n" + " task PID tree-key switches prio" + " exec-runtime sum-exec sum-sleep\n" "------------------------------------------------------------------" - "----------------" + "--------------------------------" "------------------------------------------------" "--------------------------------\n"); @@ -72,54 +71,52 @@ static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu, u64 now) if (!p->se.on_rq || task_cpu(p) != rq_cpu) continue; - print_task(m, rq, p, now); + print_task(m, rq, p); } while_each_thread(g, p); read_unlock_irq(&tasklist_lock); } -static void -print_cfs_rq_runtime_sum(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) +void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) { - s64 wait_runtime_rq_sum = 0; - struct task_struct *p; - struct rb_node *curr; - unsigned long flags; + s64 MIN_vruntime = -1, min_vruntime, max_vruntime = -1, + spread, rq0_min_vruntime, spread0; struct rq *rq = &per_cpu(runqueues, cpu); + struct sched_entity *last; + unsigned long flags; - spin_lock_irqsave(&rq->lock, flags); - curr = first_fair(cfs_rq); - while (curr) { - p = rb_entry(curr, struct task_struct, se.run_node); - wait_runtime_rq_sum += p->se.wait_runtime; - - curr = rb_next(curr); - } - spin_unlock_irqrestore(&rq->lock, flags); - - SEQ_printf(m, " .%-30s: %Ld\n", "wait_runtime_rq_sum", - (long long)wait_runtime_rq_sum); -} - -void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq, u64 now) -{ - SEQ_printf(m, "\ncfs_rq %p\n", cfs_rq); + SEQ_printf(m, "\ncfs_rq\n"); #define P(x) \ SEQ_printf(m, " .%-30s: %Ld\n", #x, (long long)(cfs_rq->x)) - P(fair_clock); P(exec_clock); - P(wait_runtime); - P(wait_runtime_overruns); - P(wait_runtime_underruns); - P(sleeper_bonus); -#undef P - print_cfs_rq_runtime_sum(m, cpu, cfs_rq); + spin_lock_irqsave(&rq->lock, flags); + if (cfs_rq->rb_leftmost) + MIN_vruntime = (__pick_next_entity(cfs_rq))->vruntime; + last = __pick_last_entity(cfs_rq); + if (last) + max_vruntime = last->vruntime; + min_vruntime = rq->cfs.min_vruntime; + rq0_min_vruntime = per_cpu(runqueues, 0).cfs.min_vruntime; + spin_unlock_irqrestore(&rq->lock, flags); + SEQ_printf(m, " .%-30s: %Ld\n", "MIN_vruntime", + (long long)MIN_vruntime); + SEQ_printf(m, " .%-30s: %Ld\n", "min_vruntime", + (long long)min_vruntime); + SEQ_printf(m, " .%-30s: %Ld\n", "max_vruntime", + (long long)max_vruntime); + spread = max_vruntime - MIN_vruntime; + SEQ_printf(m, " .%-30s: %Ld\n", "spread", + (long long)spread); + spread0 = min_vruntime - rq0_min_vruntime; + SEQ_printf(m, " .%-30s: %Ld\n", "spread0", + (long long)spread0); +#undef P } -static void print_cpu(struct seq_file *m, int cpu, u64 now) +static void print_cpu(struct seq_file *m, int cpu) { struct rq *rq = &per_cpu(runqueues, cpu); @@ -139,9 +136,7 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now) P(nr_running); SEQ_printf(m, " .%-30s: %lu\n", "load", - rq->ls.load.weight); - P(ls.delta_fair); - P(ls.delta_exec); + rq->load.weight); P(nr_switches); P(nr_load_updates); P(nr_uninterruptible); @@ -149,10 +144,11 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now) P(next_balance); P(curr->pid); P(clock); + P(idle_clock); P(prev_clock_raw); P(clock_warps); P(clock_overflows); - P(clock_unstable_events); + P(clock_deep_idle_events); P(clock_max_delta); P(cpu_load[0]); P(cpu_load[1]); @@ -161,9 +157,9 @@ static void print_cpu(struct seq_file *m, int cpu, u64 now) P(cpu_load[4]); #undef P - print_cfs_stats(m, cpu, now); + print_cfs_stats(m, cpu); - print_rq(m, rq, cpu, now); + print_rq(m, rq, cpu); } static int sched_debug_show(struct seq_file *m, void *v) @@ -171,7 +167,7 @@ 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: v0.05, %s %.*s\n", + SEQ_printf(m, "Sched Debug Version: v0.05-v20, %s %.*s\n", init_utsname()->release, (int)strcspn(init_utsname()->version, " "), init_utsname()->version); @@ -179,7 +175,7 @@ static int sched_debug_show(struct seq_file *m, void *v) SEQ_printf(m, "now at %Lu nsecs\n", (unsigned long long)now); for_each_online_cpu(cpu) - print_cpu(m, cpu, now); + print_cpu(m, cpu); SEQ_printf(m, "\n"); @@ -235,21 +231,20 @@ void proc_sched_show_task(struct task_struct *p, struct seq_file *m) #define P(F) \ SEQ_printf(m, "%-25s:%20Ld\n", #F, (long long)p->F) - P(se.wait_start); - P(se.wait_start_fair); P(se.exec_start); + P(se.vruntime); + P(se.sum_exec_runtime); + +#ifdef CONFIG_SCHEDSTATS + P(se.wait_start); P(se.sleep_start); - P(se.sleep_start_fair); P(se.block_start); P(se.sleep_max); P(se.block_max); P(se.exec_max); + P(se.slice_max); P(se.wait_max); - P(se.wait_runtime); - P(se.wait_runtime_overruns); - P(se.wait_runtime_underruns); - P(se.sum_wait_runtime); - P(se.sum_exec_runtime); +#endif SEQ_printf(m, "%-25s:%20Ld\n", "nr_switches", (long long)(p->nvcsw + p->nivcsw)); P(se.load.weight); @@ -269,7 +264,13 @@ void proc_sched_show_task(struct task_struct *p, struct seq_file *m) void proc_sched_set_task(struct task_struct *p) { - p->se.sleep_max = p->se.block_max = p->se.exec_max = p->se.wait_max = 0; - p->se.wait_runtime_overruns = p->se.wait_runtime_underruns = 0; - p->se.sum_exec_runtime = 0; +#ifdef CONFIG_SCHEDSTATS + p->se.sleep_max = 0; + p->se.block_max = 0; + p->se.exec_max = 0; + p->se.slice_max = 0; + p->se.wait_max = 0; +#endif + p->se.sum_exec_runtime = 0; + p->se.prev_sum_exec_runtime = 0; }