linux-kernel - Re: drm i915 hangs on heavy io load

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Message-ID: <CAPM=9txgXLHQPCP4egU57P0=pACmKZnAzwgj6fNxR5-4nwOF6A@mail.gmail.com>
Date:	Sun, 4 Nov 2012 16:08:47 +1000
From:	Dave Airlie <airlied@...il.com>
To:	Norbert Preining <preining@...ic.at>
Cc:	Chris Wilson <chris@...is-wilson.co.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>
Subject: Re: drm i915 hangs on heavy io load

On Sun, Nov 4, 2012 at 10:44 AM, Norbert Preining <preining@...ic.at> wrote:
> Hi all,
>
> On Di, 30 Okt 2012, Dave Airlie wrote:
>> I would suggest starting a bisect on drivers/gpu/drm/i915 from 3.6
>> final to 3.7-rc1 or maybe -rc2.
>
> Sorry for my ignorance ... I did on master branch
>         $ git checkout v3.7-rc1
>         ...
>         $ git bisect start drivers/gpu/drm/i915
>         $ git bisect bad
>         $ git bisect good v3.6
>         Bisecting: 121 revisions left to test after this (roughly 7 steps)
>         [25c5b2665fe4cc5a93edd29b62e7c05c15dddd26] drm/i915: implement new set_mode code flow
>         $
> after that I am back somewhere around
>         3.6.0-rc2
> ???
>
> Am I doing something wrong? I thought I am bisecting between 3.6 and 3.7.-rc2?
> How can I go back to 3.6.0-rc2?

Yeah thats fine, bisecting works by going to where commits were
originally committed, so drm-intel-next was 3.6.0-rc2 at some point
was only merged into Linus later.

Dave.
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