linux-kernel - Re: [PATCH] xfs: allow disabling xfs tracepoints via Kconfig

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Message-ID: <20190204215332.GB14116@dastard>
Date:   Tue, 5 Feb 2019 08:53:32 +1100
From:   Dave Chinner <david@...morbit.com>
To:     Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:     "Darrick J. Wong" <darrick.wong@...cle.com>,
        linux-xfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] xfs: allow disabling xfs tracepoints via Kconfig

On Mon, Feb 04, 2019 at 10:20:35PM +0100, Rasmus Villemoes wrote:
> linux/tracepoints.h allows individual subsystems to disable their
> tracepoints. Add such a knob for xfs. Disabling XFS_TRACEPOINTS
> reduces the resident size of xfs.ko by about a third, or ~350 KiB.

Ok, now we can't debug typical problems on live production systems
if tracepoints are turned off on the user/distro kernels.  So under
what circumstances would we ever want to turn off tracepoints on
XFS?

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com