From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Juri Lelli <juri.lelli@redhat.com>,
Clark Williams <williams@redhat.com>,
Ingo Molnar <mingo@redhat.com>,
Daniel Bristot de Oliveira <bristot@kernel.org>
Subject: [for-next][PATCH 11/23] tracing/timerlat: Do not wakeup the thread if the trace stops at the IRQ
Date: Fri, 27 May 2022 22:50:39 -0400 [thread overview]
Message-ID: <20220528025250.675966313@goodmis.org> (raw)
In-Reply-To: 20220528025028.850906216@goodmis.org
From: Daniel Bristot de Oliveira <bristot@kernel.org>
There is no need to wakeup the timerlat/ thread if stop tracing is hit
at the timerlat's IRQ handler.
Return before waking up timerlat's thread.
Link: https://lkml.kernel.org/r/b392356c91b56aedd2b289513cc56a84cf87e60d.1652175637.git.bristot@kernel.org
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
kernel/trace/trace_osnoise.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c
index 9b204ee3c6f5..035ec8b84e12 100644
--- a/kernel/trace/trace_osnoise.c
+++ b/kernel/trace/trace_osnoise.c
@@ -1595,6 +1595,8 @@ static enum hrtimer_restart timerlat_irq(struct hrtimer *timer)
osnoise_stop_tracing();
notify_new_max_latency(diff);
+
+ return HRTIMER_NORESTART;
}
}
--
2.35.1
next prev parent reply other threads:[~2022-05-28 2:53 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-28 2:50 [for-next][PATCH 00/23] tracing: Last minute fixes and updates for 5.19 Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 01/23] tracing: Have event format check not flag %p* on __get_dynamic_array() Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 02/23] tracing: Reset the function filter after completing trampoline/graph selftest Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 03/23] tracing: Use trace_create_file() to simplify creation of tracefs entries Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 04/23] ftrace: Deal with error return code of the ftrace_process_locs() function Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 05/23] tracing: Use strim() to remove whitespace instead of doing it manually Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 06/23] tracing: Fix potential double free in create_var_ref() Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 07/23] tracing: Fix return value of trace_pid_write() Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 09/23] tracing/timerlat: Notify IRQ new max latency only if stop tracing is set Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 10/23] tracing/timerlat: Print stacktrace in the IRQ handler if needed Steven Rostedt
2022-05-28 2:50 ` Steven Rostedt [this message]
2022-05-28 2:50 ` [for-next][PATCH 12/23] tracing: Change "char *" string form to "char []" Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 13/23] tracing: Cleanup code by removing init "char *name" Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 14/23] ftrace: Remove return value of ftrace_arch_modify_*() Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 15/23] ftrace: Fix typo in comment Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 16/23] tracing: Initialize integer variable to prevent garbage return value Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 17/23] tracing: Disable kcov on trace_preemptirq.c Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 18/23] tracing: Fix comments of create_filter() Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 19/23] ftrace: Clean up hash direct_functions on register failures Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 20/23] x86,tracing: Remove unused headers Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 21/23] x86/traceponit: Fix comment about irq vector tracepoints Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 22/23] tracing: Fix comments for event_trigger_separate_filter() Steven Rostedt
2022-05-28 2:50 ` [for-next][PATCH 23/23] ftrace: Add FTRACE_MCOUNT_MAX_OFFSET to avoid adding weak function Steven Rostedt
2022-05-28 3:17 ` [for-next][PATCH 00/23] tracing: Last minute fixes and updates for 5.19 Steven Rostedt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220528025250.675966313@goodmis.org \
--to=rostedt@goodmis.org \
--cc=akpm@linux-foundation.org \
--cc=bristot@kernel.org \
--cc=juri.lelli@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=mingo@redhat.com \
--cc=williams@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).