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Message-ID: <D67D07B1.EB5E%jevans@cray.com>
Date:   Thu, 11 Jan 2018 17:25:20 +0000
From:   Ben Evans <bevans@...y.com>
To:     Fabian Huegel <fabian_huegel@....de>,
        Oleg Drokin <oleg.drokin@...el.com>,
        Andreas Dilger <andreas.dilger@...el.com>,
        James Simmons <jsimmons@...radead.org>,
        Lai Siyao <lai.siyao@...el.com>,
        "John L . Hammond" <john.hammond@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        Ben Evans <bevans@...y.com>, NeilBrown <neilb@...e.com>
CC:     "lustre-devel@...ts.lustre.org" <lustre-devel@...ts.lustre.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-kernel@...cs.fau.de" <linux-kernel@...cs.fau.de>
Subject: Re: 

I've been working off and on with this.  Since you're getting into the
counters in a couple of the patches, part of the reason for all the
#defines here are because MDC, MDT and OST counters are all shoved into
the same array dynamically, sometimes.  It would be a much cleaner
approach to have a separate array for the MDC stats, then print them
conditionally.

This would reduce all of the calls to these macros to counter increments.

-Ben Evans

On 1/11/18, 12:16 PM, "Fabian Huegel" <fabian_huegel@....de> wrote:

>We cleaned up a lot of checkpatch errors and warnings in obd_class.h,
>but there are still some CHECKs and two warnings about flow control
>inside macros left.
>
>Changing those macros to inline functions would probably
>be a good idea, unfortunatly it's not straightforward since they use
>'#op' to print the name of the operation.
>
>We also did some aligning to make the code more readable and removed
>an unnecessary macro.
>
>We only tested, that the kernel still compiles and the lustre kernel
>module loads successfully, but given the harmless nature of these
>changes we don't expect any problems.
>
>The patches are based on the staging-testing branch of the staging tree.
>