perf sched: Add 'perf sched map' scheduling event map printout

This prints a textual context-switching outline of workload captured via perf sched record. For example, on a 16 CPU box it outputs: N1 O1 . . . S1 . . . B0 . *I0 C1 . M1 . 23002.773423 secs N1 O1 . *Q0 . S1 . . . B0 . I0 C1 . M1 . 23002.773423 secs N1 O1 . Q0 . S1 . . . B0 . *R1 C1 . M1 . 23002.773485 secs N1 O1 . Q0 . S1 . *S0 . B0 . R1 C1 . M1 . 23002.773478 secs *L0 O1 . Q0 . S1 . S0 . B0 . R1 C1 . M1 . 23002.773523 secs L0 O1 . *. . S1 . S0 . B0 . R1 C1 . M1 . 23002.773531 secs L0 O1 . . . S1 . S0 . B0 . R1 C1 *T1 M1 . 23002.773547 secs T1 => irqbalance:2089 L0 O1 . . . S1 . S0 . *P0 . R1 C1 T1 M1 . 23002.773549 secs *N1 O1 . . . S1 . S0 . P0 . R1 C1 T1 M1 . 23002.773566 secs N1 O1 . . . *J0 . S0 . P0 . R1 C1 T1 M1 . 23002.773571 secs N1 O1 . . . J0 . S0 *B0 P0 . R1 C1 T1 M1 . 23002.773592 secs N1 O1 . . . J0 . *U0 B0 P0 . R1 C1 T1 M1 . 23002.773582 secs N1 O1 . . . *S1 . U0 B0 P0 . R1 C1 T1 M1 . 23002.773604 secs N1 O1 . . . S1 . U0 B0 *. . R1 C1 T1 M1 . 23002.773615 secs N1 O1 . . . S1 . U0 B0 . . *K0 C1 T1 M1 . 23002.773631 secs N1 O1 . *M0 . S1 . U0 B0 . . K0 C1 T1 M1 . 23002.773624 secs N1 O1 . M0 . S1 . U0 *. . . K0 C1 T1 M1 . 23002.773644 secs N1 O1 . M0 . S1 . U0 . . . *R1 C1 T1 M1 . 23002.773662 secs N1 O1 . M0 . S1 . *. . . . R1 C1 T1 M1 . 23002.773648 secs N1 O1 . *. . S1 . . . . . R1 C1 T1 M1 . 23002.773680 secs N1 O1 . . . *L0 . . . . . R1 C1 T1 M1 . 23002.773717 secs *N0 O1 . . . L0 . . . . . R1 C1 T1 M1 . 23002.773709 secs *N1 O1 . . . L0 . . . . . R1 C1 T1 M1 . 23002.773747 secs Columns stand for individual CPUs, from CPU0 to CPU15, and the two-letter shortcuts stand for tasks that are running on a CPU. '*' denotes the CPU that had the event. A dot signals an idle CPU. New tasks are assigned new two-letter shortcuts - when they occur first they are printed. In the above example 'T1' stood for irqbalance: T1 => irqbalance:2089 Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
author: Ingo Molnar <mingo@elte.hu> 2009-09-16 11:40:48 -0400
committer: Ingo Molnar <mingo@elte.hu> 2009-09-16 10:41:30 -0400
commit: 0ec04e16d08b69d8da46abbcfa3e3f2cd9738852 (patch)
tree: 8a63209fd4f45ff1c15a89fd0e3aa5dbdbe58b33 /tools/perf/util/thread.c
parent: 80ed0987f363d7eb50193df3e6f6d71451f74bc3 (diff)
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 12c4341078f9..45efb5db0d19 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -8,7 +8,7 @@
 static struct thread *thread__new(pid_t pid)
 {
-        struct thread *self = malloc(sizeof(*self));
+        struct thread *self = calloc(1, sizeof(*self));
        if (self != NULL) {
                self->pid = pid;
author	Ingo Molnar <mingo@elte.hu>	2009-09-16 11:40:48 -0400
committer	Ingo Molnar <mingo@elte.hu>	2009-09-16 10:41:30 -0400
commit	0ec04e16d08b69d8da46abbcfa3e3f2cd9738852 (patch)
tree	8a63209fd4f45ff1c15a89fd0e3aa5dbdbe58b33 /tools/perf/util/thread.c
parent	80ed0987f363d7eb50193df3e6f6d71451f74bc3 (diff)

diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index 12c4341078f9..45efb5db0d19 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c
@@ -8,7 +8,7 @@
8		8
9	static struct thread *thread__new(pid_t pid)	9	static struct thread *thread__new(pid_t pid)
10	{	10	{
11	struct thread self = malloc(sizeof(self));	11	struct thread self = calloc(1, sizeof(self));
12		12
13	if (self != NULL) {	13	if (self != NULL) {
14	self->pid = pid;	14	self->pid = pid;