From b22f4858126a6aa852ad745b94f6b25dbdea708e Mon Sep 17 00:00:00 2001
From: Frederic Weisbecker <fweisbec@gmail.com>
Date: Tue, 10 Feb 2009 15:49:11 +0100
Subject: [PATCH] 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>
---
kernel/trace/Kconfig | 1 +
kernel/trace/trace_sysprof.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 3a331289457..6ff928acd45 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 84ca9d81e74..9902c15997a 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);
}
--
2.41.3