From: Valentin Schneider <vschneid@redhat.com>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org
Cc: Tomas Glozar <tglozar@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Costa Shulyupin <costa.shul@redhat.com>,
Crystal Wood <crwood@redhat.com>, John Kacur <jkacur@redhat.com>,
Ivan Pravdin <ipravdin.official@gmail.com>,
Jonathan Corbet <corbet@lwn.net>
Subject: [PATCH v3 5/6] rtla: Unconditionally clean any pre-existing filters for user-provided events
Date: Wed, 15 Jul 2026 17:45:50 +0200 [thread overview]
Message-ID: <20260715154553.2020891-6-vschneid@redhat.com> (raw)
In-Reply-To: <20260715154553.2020891-1-vschneid@redhat.com>
A later commit will apply a filter to events recorded to the trace
output. To prevent any user confusion, remove pre-existing filters when
enabling an event provided via the '-e' command line argument.
Suggested-by: Tomas Glozar <tglozar@redhat.com>
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
---
tools/tracing/rtla/src/trace.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/tools/tracing/rtla/src/trace.c b/tools/tracing/rtla/src/trace.c
index e407447773d04..f67f02cc92cdd 100644
--- a/tools/tracing/rtla/src/trace.c
+++ b/tools/tracing/rtla/src/trace.c
@@ -473,6 +473,10 @@ static int trace_event_enable_filter(struct trace_instance *instance,
char filter[MAX_PATH];
int retval;
+ /* Unconditionally clean any pre-existing filters */
+ tracefs_event_file_write(instance->inst, tevent->system,
+ tevent->event, "filter", "0");
+
if (!tevent->filter)
return 0;
--
2.55.0
next prev parent reply other threads:[~2026-07-15 15:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-15 15:45 [PATCH v3 0/6] tracing/osnoise: Track IPIs Valentin Schneider
2026-07-15 15:45 ` [PATCH v3 1/6] rtla/osnoise: Add IPI tracking cmdline option Valentin Schneider
2026-07-15 15:45 ` [PATCH v3 2/6] rtla/osnoise: Record IPI count in osnoise top Valentin Schneider
2026-07-15 15:45 ` [PATCH v3 3/6] rtla/osnoise: Leverage IPI event filters when tracing a subset of CPUs Valentin Schneider
2026-07-15 15:45 ` [PATCH v3 4/6] rtla/osnoise: Allow IPI filters to gracefully fail Valentin Schneider
2026-07-15 15:45 ` Valentin Schneider [this message]
2026-07-15 15:45 ` [PATCH v3 6/6] rtla/osnoise: Trace IPI events when recording a trace file Valentin Schneider
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