perf report: Separate out idle threads
Introduce the special comm name [idle] for idle theads. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -612,6 +612,17 @@ static size_t output__fprintf(FILE *fp, uint64_t total_samples)
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return ret;
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}
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static void register_idle_thread(void)
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{
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struct thread *thread = threads__findnew(0);
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if (thread == NULL ||
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thread__set_comm(thread, "[idle]")) {
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fprintf(stderr, "problem inserting idle task.\n");
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exit(-1);
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}
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}
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static int __cmd_report(void)
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{
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@ -626,6 +637,8 @@ static int __cmd_report(void)
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char cwd[PATH_MAX], *cwdp = cwd;
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int cwdlen;
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register_idle_thread();
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input = open(input_name, O_RDONLY);
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if (input < 0) {
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perror("failed to open file");
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