Add --no-filter option which doesn't install filters for the trace-cmd recording
processes pids.
Signed-off-by: Slavomir Kaslev <kaslevs@xxxxxxxxxx>
Suggested-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
tracecmd/trace-record.c | 14 +++++++++++---
tracecmd/trace-usage.c | 1 +
2 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/tracecmd/trace-record.c b/tracecmd/trace-record.c
index dae0396..05a313b 100644
--- a/tracecmd/trace-record.c
+++ b/tracecmd/trace-record.c
@@ -86,6 +86,7 @@ static int do_ptrace;
static int filter_task;
static int filter_pid = -1;
+static bool no_filter = false;
static int local_cpu_count;
@@ -1063,6 +1064,9 @@ static void update_task_filter(void)
struct buffer_instance *instance;
int pid = getpid();
+ if (no_filter)
+ return;
+
if (filter_task)
add_filter_pid(pid, 0);
@@ -4377,9 +4381,9 @@ void update_first_instance(struct buffer_instance *instance, int topt)
}
enum {
-
- OPT_quiet = 246,
- OPT_debug = 247,
+ OPT_quiet = 245,
+ OPT_debug = 246,
+ OPT_no_filter = 247,
OPT_max_graph_depth = 248,
OPT_tsoffset = 249,
OPT_bycomm = 250,
@@ -4603,6 +4607,7 @@ static void parse_record_options(int argc,
{"by-comm", no_argument, NULL, OPT_bycomm},
{"ts-offset", required_argument, NULL, OPT_tsoffset},
{"max-graph-depth", required_argument, NULL, OPT_max_graph_depth},
+ {"no-filter", no_argument, NULL, OPT_no_filter},
{"debug", no_argument, NULL, OPT_debug},
{"quiet", no_argument, NULL, OPT_quiet},
{"help", no_argument, NULL, '?'},
@@ -4877,6 +4882,9 @@ static void parse_record_options(int argc,
if (!ctx->max_graph_depth)
die("Could not allocate option");
break;
+ case OPT_no_filter:
+ no_filter = true;
+ break;
case OPT_debug:
debug = 1;
break;
diff --git a/tracecmd/trace-usage.c b/tracecmd/trace-usage.c
index 9ea1906..29a7081 100644
--- a/tracecmd/trace-usage.c
+++ b/tracecmd/trace-usage.c
@@ -56,6 +56,7 @@ static struct usage_help usage_help[] = {
" --func-stack perform a stack trace for function tracer\n"
" (use with caution)\n"
" --max-graph-depth limit function_graph depth\n"
+ " --no-filter do not set any event filters\n"
},
{
"start",
--
2.19.1
|