linux-kernel - Re: [PATCH v4 5/5] blktrace: Make init_blk_tracer() asynchronous when trace_async

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Message-Id: <56C8934E-3D17-4467-93E6-D813770BF577@kernel.dk>
Date: Wed, 28 Jan 2026 19:25:46 -0700
From: Jens Axboe <axboe@...nel.dk>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: Yaxiong Tian <tianyaxiong@...inos.cn>, mhiramat@...nel.org,
 mathieu.desnoyers@...icios.com, corbet@....net, skhan@...uxfoundation.org,
 linux-trace-kernel@...r.kernel.org, linux-block@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v4 5/5] blktrace: Make init_blk_tracer() asynchronous when trace_async_init set

On Jan 28, 2026, at 5:40 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> 
> Jens,
> 
> Can you give me an acked-by on this patch and I can take the series through
> my tree.

On phone, hope this works:

Acked-by: Jens Axboe <axboe@...nel.dk>

> Or perhaps this doesn't even need to test the trace_async_init flag and can
> always do the work queue? Does blk_trace ever do tracing at boot up? That
> is, before user space starts?

Not via the traditonal way of running blktrace.