linux-kernel - Re: [PATCH 07/14] xfs: ifdef out unused xfs

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Message-ID: <20250616052810.GB1148@lst.de>
Date: Mon, 16 Jun 2025 07:28:10 +0200
From: Christoph Hellwig <hch@....de>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
	linux-xfs@...r.kernel.org, Masami Hiramatsu <mhiramat@...nel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Carlos Maiolino <cem@...nel.org>, Christoph Hellwig <hch@....de>,
	"Darrick J. Wong" <djwong@...nel.org>
Subject: Re: [PATCH 07/14] xfs: ifdef out unused xfs_attr events

On Thu, Jun 12, 2025 at 05:24:12PM -0400, Steven Rostedt wrote:
> From: Steven Rostedt <rostedt@...dmis.org>
> 
> Trace events can take up to 5K in memory for text and meta data per event
> regardless if they are used or not, so they should not be defined when not
> used. The events xfs_attr_fillstate and xfs_attr_refillstate are only
> called in code that is #ifdef out and exists only for future reference.
> 
> Ifdef out the events that go with that code and add a comment mentioning
> the other code.

Just drop them entirely, which is what the code using them should
have done as well.  We can always triviall bring back code from
git history.