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tracing/sysprof: add missing tracing_{start,stop}_record_cmdline() 

Add the missing pair tracing_{start,stop}_record_cmdline() to record well
the cmdline associated with pid.

Changes in v2:

- fix a build error, the sched_switch tracer is needed to record the
  cmdline.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker 2009-02-10 15:49:11 +01:00 committed by Ingo Molnar
parent d524e03207
commit b22f485812
2 changed files with 4 additions and 0 deletions
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1
kernel/trace/Kconfig
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@ -134,6 +134,7 @@ config SYSPROF_TRACER
bool "Sysprof Tracer"
depends on X86
select TRACING
select CONTEXT_SWITCH_TRACER
help
This tracer provides the trace needed by the 'Sysprof' userspace
tool.

3
kernel/trace/trace_sysprof.c
View File

@ -238,6 +238,8 @@ static int stack_trace_init(struct trace_array *tr)
{
sysprof_trace = tr;
tracing_start_cmdline_record();
mutex_lock(&sample_timer_lock);
start_stack_timers();
tracer_enabled = 1;
@ -247,6 +249,7 @@ static int stack_trace_init(struct trace_array *tr)
static void stack_trace_reset(struct trace_array *tr)
{
tracing_stop_cmdline_record();
stop_stack_trace(tr);
}