Re: [PATCH v3 01/17] tools/rv: Do not skip idle in trace
From: Peter Zijlstra <peterz@infradead.org>
Date: 2025-07-16 11:50:32
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On Tue, Jul 15, 2025 at 09:14:18AM +0200, Gabriele Monaco wrote:
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). The current condition for per-task monitors (config_has_id) does not check that config_my_pid isn't 0 to skip. In case we pass -s, we show events triggered by RV but don't show those triggered by idle (PID 0). Fix the condition to account this scenario.
The distinction between !my_pid and has_id is that you can in fact trace pid-0 if you want?
quoted hunk ↗ jump to hunk
Fixes: 6d60f89691fc ("tools/rv: Add in-kernel monitor interface") Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> --- tools/verification/rv/src/in_kernel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/tools/verification/rv/src/in_kernel.c b/tools/verification/rv/src/in_kernel.c index c0dcee795c0de..72b03bae021cd 100644 --- a/tools/verification/rv/src/in_kernel.c +++ b/tools/verification/rv/src/in_kernel.c@@ -429,7 +429,7 @@ ikm_event_handler(struct trace_seq *s, struct tep_record *record, tep_get_common_field_val(s, trace_event, "common_pid", record, &pid, 1); - if (config_has_id && (config_my_pid == id)) + if (config_my_pid && config_has_id && (config_my_pid == id)) return 0; else if (config_my_pid && (config_my_pid == pid)) return 0;-- 2.50.1