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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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6
kernel/trace/trace_boot.c
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@ -27,10 +27,14 @@ void start_boot_trace(void)
void enable_boot_trace(void)
{
if (pre_initcalls_finished)
tracing_start_cmdline_record();
}
void disable_boot_trace(void)
{
if (pre_initcalls_finished)
tracing_stop_cmdline_record();
}
void reset_boot_trace(struct trace_array *tr)
@ -45,6 +49,8 @@ static void boot_trace_init(struct trace_array *tr)
for_each_cpu_mask(cpu, cpu_possible_map)
tracing_reset(tr, cpu);
sched_switch_trace.init(tr);
}
static void boot_trace_ctrl_update(struct trace_array *tr)