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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [IVB bisected]igt/pm_rc6_residency subcase rc6-accuracy fail"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90369">90369</a>
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<th>Summary</th>
<td>[IVB bisected]igt/pm_rc6_residency subcase rc6-accuracy fail
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>yex.tian@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=115630" name="attach_115630" title="dmesg info">attachment 115630</a> <a href="attachment.cgi?id=115630&action=edit" title="dmesg info">[details]</a></span>
dmesg info
==System Environment==
-----------------------------------------------------
Regression: Yes
Non-working platforms: IVB
==Kernel==
--------------------------------------------------
commit 20e7fca46c6d1598a9720f3b0b06acb982919cf8
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Thu May 7 18:16:42 2015 +0200
drm-intel-nightly: 2015y-05m-07d-16h-16m-10s UTC integration manifest
==Bug detailed description==
--------------------------------------------------
igt/pm_rc6_residency subcase rc6-accuracy fail on IVB.
It’s kernel regression, By bisected, show the first bad commit is 71b7e54
commit 71b7e54f71b899db9f8def67a0e976969384e699
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
AuthorDate: Tue Apr 14 17:35:18 2015 +0200
Commit: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
CommitDate: Thu Apr 23 21:06:02 2015 +0200
drm/i915: Don't look at pg_dirty_rings for aliasing ppgtt
We load the ppgtt ptes once per gpu reset/driver load/resume and
that's all that's needed. Note that this only blows up when we're
using the allocate_va_range funcs and not the special-purpose ones
used. With this change we can get rid of that duplication.
Reviewed-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@intel.com">mika.kuoppala@intel.com</a>>
Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@intel.com">daniel.vetter@intel.com</a>>
==output==
[root@x-ivb6 tests]# ./pm_rc6_residency --run-subtest rc6-accuracy
IGT-Version: 1.10-g159562c (x86_64) (Linux:
4.1.0-rc2_drm-intel-nightly_20e7fc_20150508+ x86_64)
Test assertion failure function residency_accuracy, file
pm_rc6_residency.c:104:
Failed assertion: diff >= (SLEEP_DURATION - RC6_FUDGE)
GPU was not in RC6 long enough. Check that the GPU is as idle as possible(ie.
no X, running and running no other tests)
Stack trace:
#0 [__igt_fail_assert+0xf1]
#1 [residency_accuracy+0x171]
#2 [__real_main134+0xdd]
#3 [main+0x21]
#4 [__libc_start_main+0xf5]
#5 [_start+0x29]
#6 [<unknown>+0x29]
Subtest rc6-accuracy failed.
**** DEBUG ****
Test assertion failure function residency_accuracy, file
pm_rc6_residency.c:104:
Failed assertion: diff >= (SLEEP_DURATION - RC6_FUDGE)
GPU was not in RC6 long enough. Check that the GPU is as idle as possible(ie.
no X, running and running no other tests)
**** END ****
Subtest rc6-accuracy: FAIL (0.003s)
==Reproduce steps==
----------------------------
1, ./pm_rc6_residency --run-subtest rc6-accuracy</pre>
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