linux-kernel - Re: [PATCH V2 6.1] softirq: Add trace points for tasklet entry/exit

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Message-ID: <20251203121703.0c3a5ed6@gandalf.local.home>
Date: Wed, 3 Dec 2025 12:17:03 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Sumanth Gavini <sumanth.gavini@...oo.com>
Cc: jstultz@...gle.com, mhiramat@...nel.org, tglx@...utronix.de,
 clingutla@...eaurora.org, mingo@...nel.org, sashal@...nel.org,
 boqun.feng@...il.com, gregkh@...uxfoundation.org, ryotkkr98@...il.com,
 kprateek.nayak@....com, elavila@...gle.com, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Subject: Re: [PATCH V2 6.1] softirq: Add trace points for tasklet entry/exit

On Tue, 11 Nov 2025 21:16:20 -0600
Sumanth Gavini <sumanth.gavini@...oo.com> wrote:

> [elavila: Port to android-mainline]
> [jstultz: Rebased to upstream, cut unused trace points, added
>  comments for the tracepoints, reworded commit]
> 
> The intention is to keep the stable branch in sync with upstream fixes
> and improve observability without introducing new functionality.
> 
> Signed-off-by: Sumanth Gavini <sumanth.gavini@...oo.com>

I just noticed that this is being pulled into 6.1.

I'm still not sure why this was added. Yes, it may improve observability,
but that's because it is adding new functionality. Adding a trace event, is
functionality and not a bug fix.

I'm not going to argue against this backport, but I do want to point out
that it is adding new functionality to a stable release.

-- Steve