From: Crystal Wood <crwood@redhat.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Tomas Glozar <tglozar@redhat.com>, John Kacur <jkacur@redhat.com>,
linux-trace-kernel@vger.kernel.org,
Crystal Wood <crwood@redhat.com>
Subject: [PATCH v2 8/9] tracing/osnoise: Print taint message for timerlat
Date: Fri, 9 Oct 2026 21:23:37 -0500 [thread overview]
Message-ID: <20261010022338.2507589-9-crwood@redhat.com> (raw)
In-Reply-To: <20261010022338.2507589-1-crwood@redhat.com>
Provide taint information the same as is done in print_osnoise_headers().
Signed-off-by: Crystal Wood <crwood@redhat.com>
---
v2: new patch
---
kernel/trace/trace_osnoise.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index ccd717db9a51..912ff5f5e490 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -577,6 +577,9 @@ static void record_osnoise_sample(struct osnoise_sample *sample)
#ifdef CONFIG_PREEMPT_RT
static void print_timerlat_headers(struct seq_file *s)
{
+ if (osnoise_data.tainted)
+ seq_puts(s, "# timerlat is tainted!\n");
+
seq_puts(s, "# _-------=> irqs-off\n");
seq_puts(s, "# / _------=> need-resched\n");
seq_puts(s, "# | / _-----=> need-resched-lazy\n");
@@ -594,6 +597,9 @@ static void print_timerlat_headers(struct seq_file *s)
#else /* CONFIG_PREEMPT_RT */
static void print_timerlat_headers(struct seq_file *s)
{
+ if (osnoise_data.tainted)
+ seq_puts(s, "# timerlat is tainted!\n");
+
seq_puts(s, "# _-----=> irqs-off\n");
seq_puts(s, "# / _----=> need-resched\n");
seq_puts(s, "# | / _---=> hardirq/softirq\n");
--
2.54.0
next prev parent reply other threads:[~2026-10-10 2:24 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-10 2:23 [PATCH v2 0/9] tracing/osnoise: Synchronization fixes Crystal Wood
2026-10-10 2:23 ` [PATCH v2 1/9] tracing/osnoise: Variable cleanup Crystal Wood
2026-10-10 2:23 ` [PATCH v2 2/9] tracing/osnoise: Hold a ref on osn->kthread Crystal Wood
2026-10-10 2:23 ` [PATCH v2 3/9] tracing/osnoise: Per-cpu mutexes and fd detachment Crystal Wood
2026-10-10 2:35 ` sashiko-bot
2026-10-10 2:23 ` [PATCH v2 4/9] tracing/osnoise: kthreads: Verify CPU after migrate_disable() Crystal Wood
2026-10-10 2:23 ` [PATCH v2 5/9] tracing/osnoise: start_kthread: Always check OSN_WORKLOAD Crystal Wood
2026-10-10 2:34 ` sashiko-bot
2026-10-10 2:23 ` [PATCH v2 6/9] tracing/osnoise: Take trace_types_lock in timerlat_fd_open Crystal Wood
2026-10-10 2:23 ` [PATCH v2 7/9] tracing/osnoise: Split out per-cpu variable resets Crystal Wood
2026-10-10 2:36 ` sashiko-bot
2026-10-10 2:23 ` Crystal Wood [this message]
2026-10-10 2:23 ` [PATCH v2 9/9] tracing/osnoise: Refuse timerlat fd open if tracer inactive Crystal Wood
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