tools/rv: Do not skip idle in trace

Currently, the userspace RV tool skips trace events triggered by the RV
tool itself, this can be changed by passing the parameter -s, which sets
the variable config_my_pid to 0 (instead of the tool's PID).
This has the side effect of skipping events generated by idle (PID 0).

Set config_my_pid to -1 (an invalid pid) to avoid skipping idle.

Cc: Nam Cao <namcao@linutronix.de>
Cc: Tomas Glozar <tglozar@redhat.com>
Cc: Juri Lelli <jlelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Link: https://lore.kernel.org/20250723161240.194860-2-gmonaco@redhat.com
Fixes: 6d60f89691fc ("tools/rv: Add in-kernel monitor interface")
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

diff --git a/tools/verification/rv/src/in_kernel.c b/tools/verification/rv/src/in_kernel.c
index c0dcee795c0de045c52f33ebd420ea698200afa5..4bb746ea6e17355328cd4860cf6a3654d0df3dda 100644 (file)
--- a/tools/verification/rv/src/in_kernel.c
+++ b/tools/verification/rv/src/in_kernel.c
@@ -431,7 +431,7 @@ ikm_event_handler(struct trace_seq *s, struct tep_record *record,
 
        if (config_has_id && (config_my_pid == id))
                return 0;
-       else if (config_my_pid && (config_my_pid == pid))
+       else if (config_my_pid == pid)
                return 0;
 
        tep_print_event(trace_event->tep, s, record, "%16s-%-8d [%.3d] ",
@@ -734,7 +734,7 @@ static int parse_arguments(char *monitor_name, int argc, char **argv)
                        config_reactor = optarg;
                        break;
                case 's':
-                       config_my_pid = 0;
+                       config_my_pid = -1;
                        break;
                case 't':
                        config_trace = 1;