Commit 9b8055a5 authored Aug 31, 2009 by Frederic Weisbecker Committed by Ingo Molnar Aug 31, 2009

perf tools: Unify swapper tasks naming



In perf tools, we hardcode the pid 0 cmdline resolving to
"idle" because the init task is not included in the COMM
events.

But the idle tasks secondary cpus are resolved into their
"init" name through the COMM events.

We have then such strange result in perf report (ditto with
trace):

    19.66%       init    [kernel]          [k] acpi_idle_enter_c1
    17.32%       [idle]  [kernel]          [k] acpi_idle_enter_c1

It's then better to unify the swapper tasks into a single init
name.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1251693921-6579-3-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 3a2684ca

tools/perf/util/thread.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -85,7 +85,7 @@ register_idle_thread(struct rb_root threads, struct thread *last_match)
		{
		struct thread *thread = threads__findnew(0, threads, last_match);

		if (!thread \|\| thread__set_comm(thread, "[idle]")) {
		if (!thread \|\| thread__set_comm(thread, "[init]")) {
		fprintf(stderr, "problem inserting idle task.\n");
		exit(-1);
		}

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