From: Steven Rostedt <rostedt@goodmis.org>
To: Yaxiong Tian <tianyaxiong@kylinos.cn>
Cc: Jens Axboe <axboe@kernel.dk>,
mhiramat@kernel.org, mathieu.desnoyers@efficios.com,
corbet@lwn.net, skhan@linuxfoundation.org,
linux-trace-kernel@vger.kernel.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH v4 5/5] blktrace: Make init_blk_tracer() asynchronous when trace_async_init set
Date: Thu, 29 Jan 2026 22:45:20 -0500 [thread overview]
Message-ID: <20260129224520.7f043338@robin> (raw)
In-Reply-To: <20260129223116.489a01fd@robin>
On Thu, 29 Jan 2026 22:31:16 -0500
Steven Rostedt <rostedt@goodmis.org> wrote:
> I added the below patch and have this result:
>
> kworker/u33:1-79 [002] ..... 1.840855: trace_event_update_all: Start syncing
> swapper/0-1 [005] ..... 6.045742: trace_eval_sync: sync maps
> kworker/u33:1-79 [002] ..... 12.289296: trace_event_update_all: Finish syncing
> swapper/0-1 [005] ..... 12.289387: trace_eval_sync: sync maps complete
>
> Which shows that the final initcall waited for the work queue to complete:
Switching to printk() gives me the same results:
# dmesg |grep sync
[ 1.117856] Start syncing
[ 4.498360] sync maps
[ 11.173304] Finish syncing
[ 11.175660] sync maps complete
-- Steve
next prev parent reply other threads:[~2026-01-30 3:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-28 12:51 [PATCH v4 0/5] Tracing: Accelerate Kernel Boot by Asynchronizing Yaxiong Tian
2026-01-28 12:53 ` [PATCH v4 1/5] tracing: Rename `eval_map_wq` and allow other parts of tracing use it Yaxiong Tian
2026-01-28 12:54 ` [PATCH v4 2/5] tracing: add trace_async_init boot parameter Yaxiong Tian
2026-01-28 12:55 ` [PATCH v4 3/5] tracing/kprobes: Skip setup_boot_kprobe_events() when no cmdline event Yaxiong Tian
2026-01-28 12:55 ` [PATCH v4 4/5] tracing/kprobes: Make setup_boot_kprobe_events() asynchronous when trace_async_init set Yaxiong Tian
2026-01-28 12:55 ` [PATCH v4 5/5] blktrace: Make init_blk_tracer() " Yaxiong Tian
2026-01-29 0:41 ` Steven Rostedt
2026-01-29 2:25 ` Jens Axboe
2026-01-29 20:29 ` Steven Rostedt
2026-01-30 1:35 ` Yaxiong Tian
2026-01-30 3:09 ` Yaxiong Tian
2026-01-30 3:26 ` Steven Rostedt
2026-01-30 3:31 ` Steven Rostedt
2026-01-30 3:45 ` Steven Rostedt [this message]
2026-01-30 4:10 ` Yaxiong Tian
2026-01-30 9:30 ` Masami Hiramatsu
2026-01-30 9:59 ` Yaxiong Tian
2026-02-02 3:36 ` Yaxiong Tian
2026-01-28 23:38 ` [PATCH v4 0/5] Tracing: Accelerate Kernel Boot by Asynchronizing Masami Hiramatsu
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