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tracing/fastboot: use sched switch tracer from boot tracer

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Impact: enhance boot trace output with scheduling events

Use the sched_switch tracer from the boot tracer.

We also can trace schedule events inside the initcalls.
Sched tracing is disabled after the initcall has finished and
then reenabled before the next one is started.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker
2008-10-31 13:20:08 +01:00
committed by Ingo Molnar
parent e55f605c14
commit d7ad44b697
4 changed files with 12 additions and 3 deletions
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2
kernel/trace/trace.c
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@@ -3251,6 +3251,8 @@ __init static int tracer_alloc_buffers(void)
register_tracer(&nop_trace);
#ifdef CONFIG_BOOT_TRACER
/* We don't want to launch sched_switch tracer yet */
global_trace.ctrl = 0;
register_tracer(&boot_tracer);
current_trace = &boot_tracer;
current_trace->init(&global_trace);