perf tools: Resolve idle thread cmdline for perf trace
Frederic Weisbecker [Mon, 31 Aug 2009 04:45:19 +0000 (06:45 +0200)]
The cmd-trace tool used the cmdline file and resolved the idle
thread using a hardcoded check for the 0 task pid.

Now we have a centralized way to do that from perf using
register_idle_thread() API.

Before:
:0-0     [000]     0.000000: irq_handler_entry: irq=0 handler=name
:0-0     [000]     0.000000: irq_handler_entry: irq=0 handler=name

After:
[idle]-0     [000]     0.000000: irq_handler_entry: irq=0 handler=name
[idle]-0     [000]     0.000000: irq_handler_entry: irq=0 handler=name

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1251693921-6579-2-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

tools/perf/builtin-trace.c

index dd3c2e7..8247fd0 100644 (file)
@@ -164,6 +164,7 @@ static int __cmd_trace(void)
        char *buf;
 
        trace_report();
+       register_idle_thread(&threads, &last_match);
 
        input = open(input_name, O_RDONLY);
        if (input < 0) {