linux-kernel - Re: [PATCH v3 0/7] Remove errors building drivers/DRIVERNAME

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Date:   Thu, 4 Oct 2018 12:00:38 +1000 (AEST)
From:   Finn Thain <fthain@...egraphics.com.au>
To:     Leonardo Bras <leobras.c@...il.com>
cc:     Robert Richter <rric@...nel.org>, lkcamp@...ts.libreplanetbr.org,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        "James E.J. Bottomley" <jejb@...isc-linux.org>,
        Helge Deller <deller@....de>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-m68k@...ts.linux-m68k.org, oprofile-list@...ts.sf.net,
        linux-parisc@...r.kernel.org, linux-s390@...r.kernel.org,
        James Bottomley <James.Bottomley@...senpartnership.com>
Subject: Re: [PATCH v3 0/7] Remove errors building drivers/DRIVERNAME

On Wed, 3 Oct 2018, Leonardo Bras wrote:

> Both ccache and distcc seem very interesting, I will take my time to 
> study them better as they can solve some situations I face. Thanks for 
> sharing!
> 

You might also want to check out 'gcc -O0', 'gcc -fopt-info' and 'gcc 
--help=optimizers' etc to see if you can reduce the compute cost.

To reduce IO cost, my build tests always use 'make O=/some/path' where 
/some/path is on a tmpfs mountpoint.

HTH.

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