Merge branches 'tracing/doc', 'tracing/ftrace', 'tracing/printk' and 'linus' into tracing/core

kernel/softirq.c

@@ -637,6 +637,7 @@ static int ksoftirqd(void * __bind_cpu)
 			preempt_enable_no_resched();
 			cond_resched();
 			preempt_disable();
+			rcu_qsctr_inc((long)__bind_cpu);
 		}
 		preempt_enable();
 		set_current_state(TASK_INTERRUPTIBLE);

kernel/trace/trace.c

@@ -1466,11 +1466,11 @@ print_trace_header(struct seq_file *m, struct trace_iterator *iter)
 	total = entries +
 		ring_buffer_overruns(iter->tr->buffer);
 
-	seq_printf(m, "%s latency trace v1.1.5 on %s\n",
+	seq_printf(m, "# %s latency trace v1.1.5 on %s\n",
 		   name, UTS_RELEASE);
-	seq_puts(m, "-----------------------------------"
+	seq_puts(m, "# -----------------------------------"
 		 "---------------------------------\n");
-	seq_printf(m, " latency: %lu us, #%lu/%lu, CPU#%d |"
+	seq_printf(m, "# latency: %lu us, #%lu/%lu, CPU#%d |"
 		   " (M:%s VP:%d, KP:%d, SP:%d HP:%d",
 		   nsecs_to_usecs(data->saved_latency),
 		   entries,
@@ -1492,24 +1492,24 @@ print_trace_header(struct seq_file *m, struct trace_iterator *iter)
 #else
 	seq_puts(m, ")\n");
 #endif
-	seq_puts(m, "    -----------------\n");
-	seq_printf(m, "    | task: %.16s-%d "
+	seq_puts(m, "#    -----------------\n");
+	seq_printf(m, "#    | task: %.16s-%d "
 		   "(uid:%d nice:%ld policy:%ld rt_prio:%ld)\n",
 		   data->comm, data->pid, data->uid, data->nice,
 		   data->policy, data->rt_priority);
-	seq_puts(m, "    -----------------\n");
+	seq_puts(m, "#    -----------------\n");
 
 	if (data->critical_start) {
-		seq_puts(m, " => started at: ");
+		seq_puts(m, "#  => started at: ");
 		seq_print_ip_sym(&iter->seq, data->critical_start, sym_flags);
 		trace_print_seq(m, &iter->seq);
-		seq_puts(m, "\n => ended at:   ");
+		seq_puts(m, "\n#  => ended at:   ");
 		seq_print_ip_sym(&iter->seq, data->critical_end, sym_flags);
 		trace_print_seq(m, &iter->seq);
-		seq_puts(m, "\n");
+		seq_puts(m, "#\n");
 	}
 
-	seq_puts(m, "\n");
+	seq_puts(m, "#\n");
 }
 
 static void test_cpu_buff_start(struct trace_iterator *iter)

kernel/trace/trace_workqueue.c

@@ -99,8 +99,6 @@ static void probe_workqueue_creation(struct task_struct *wq_thread, int cpu)
 		pr_warning("trace_workqueue: not enough memory\n");
 		return;
 	}
-	tracing_record_cmdline(wq_thread);
-
 	INIT_LIST_HEAD(&cws->list);
 	cws->cpu = cpu;
 
@@ -195,11 +193,12 @@ static int workqueue_stat_show(struct seq_file *s, void *p)
 	struct cpu_workqueue_stats *cws = p;
 	unsigned long flags;
 	int cpu = cws->cpu;
+	struct task_struct *tsk = find_task_by_vpid(cws->pid);
 
 	seq_printf(s, "%3d %6d     %6u       %s\n", cws->cpu,
 		   atomic_read(&cws->inserted),
 		   cws->executed,
-		   trace_find_cmdline(cws->pid));
+		   tsk ? tsk->comm : "<...>");
 
 	spin_lock_irqsave(&workqueue_cpu_stat(cpu)->lock, flags);
 	if (&cws->list == workqueue_cpu_stat(cpu)->list.next)