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authorFrederic Weisbecker <fweisbec@gmail.com>2009-02-10 15:49:11 +0100
committerIngo Molnar <mingo@elte.hu>2009-02-11 12:55:19 +0100
commitb22f4858126a6aa852ad745b94f6b25dbdea708e (patch)
tree6dc35af9c91144e45938a1fb6c0f28bcd685d50d
parentd524e03207591a6de7e6b5069aabc778e3f0f5f8 (diff)
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>
-rw-r--r--kernel/trace/Kconfig1
-rw-r--r--kernel/trace/trace_sysprof.c3
2 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 3a331289457a..6ff928acd453 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -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.
diff --git a/kernel/trace/trace_sysprof.c b/kernel/trace/trace_sysprof.c
index 84ca9d81e74d..9902c15997ad 100644
--- a/kernel/trace/trace_sysprof.c
+++ b/kernel/trace/trace_sysprof.c
@@ -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);
}