[Bug 86452] New: [BDW Bisected] Suspend entry and suspend resume responsive time increased by 78% and 58%

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86452

            Bug ID: 86452
           Summary: [BDW Bisected] Suspend entry and suspend resume
                    responsive time increased by 78% and 58%
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: wendy.wang at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

System Environment
BDW RVP FAB4 board
CPU: F stepping i5-5300U 2.3Ghz, 2Cores/4ThreadS, QH3F
BIOS: V93

Whole gfx sw stack:
=======
Libdrm: (master)libdrm-2.4.58-4-g00847fa48b83a85b0cb882594a12ed1511f780db
Mesa: (master)2b6e703863f7e5469ba8d82003282cc42f277d5e
Xserver:
(master)xorg-server-1.16.99.901-3-g63bb5c5ef16edf652179770294dcca4fc07dc992
Xf86_video_intel:
(master)2.99.916-144-gf9f85b88032b2458d4d24ceca450fdaa65e6b94d
Cairo: (master)121f384c0e231c9c5d9c937b216d342bfc7810a6
Libva: (master)ccd93de5a707e92a629cccd595757c8d436fa3cc
Libva_intel_driver: (master)4bdbc1ea4a875a21caa628ce27345528a2cb0774
Kernel: (drm-intel-nightly)22ba72f728eaf30e63ded0c0bb0484b4bc6f92d4


Regression?
=======
YES

Bug detailed description
=======
Execute responsiveness testing, suspend entry time increased by 78%, suspend
resume time increased by 58%

>From bisect ‘ drm-intel-next-queued ’ branch result, it's kernel regression,
the first bad commit is:

commit 8dcfd18343a56fd2277968f6b98f24b1669d2238
Author: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Date: Mon Nov 10 04:52:50 2014 -0800
drm/i915: Wait thread status on gen8+ fw sequence
As per latest pm guide, we need to do this also on
past hsw.
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Damien Lespiau <damien.lespiau at intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>


Reproduce Steps
==============
1. tsocks git clone mmm.sh.intel.com:/work/responsiveness or visit the ip
address: 10.239.36.58:/work/responsiveness
2. execute resp.sh script

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