Re: ✗ Fi.CI.BAT: warning for drm/i915: Name the anonymous per-engine context struct (rev2)

[Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>]

On 22/03/16 10:07, Chris Wilson wrote:
> On Tue, Mar 22, 2016 at 09:53:25AM +0000, Tvrtko Ursulin wrote:
>>
>>
>> On 21/03/16 11:22, Patchwork wrote:
>>> == Series Details ==
>>>
>>> Series: drm/i915: Name the anonymous per-engine context struct (rev2)
>>> URL   : https://patchwork.freedesktop.org/series/4635/
>>> State : warning
>>>
>>> == Summary ==
>>>
>>> Series 4635v2 drm/i915: Name the anonymous per-engine context struct
>>> http://patchwork.freedesktop.org/api/1.0/series/4635/revisions/2/mbox/
>>>
>>> Test gem_ringfill:
>>>          Subgroup basic-default-s3:
>>>                  dmesg-warn -> PASS       (bsw-nuc-2)
>>> Test kms_flip:
>>>          Subgroup basic-flip-vs-dpms:
>>>                  pass       -> DMESG-WARN (ilk-hp8440p) UNSTABLE
>>
>> Sporadic ILK pipe underruns:
>> https://bugs.freedesktop.org/show_bug.cgi?id=93787
>>
>>>          Subgroup basic-flip-vs-wf_vblank:
>>>                  fail       -> PASS       (byt-nuc)
>>>          Subgroup basic-plain-flip:
>>>                  pass       -> DMESG-WARN (hsw-brixbox)
>>
>> Unrelated intermittent device suspended while HW access:
>> https://bugs.freedesktop.org/show_bug.cgi?id=94349
>>
>>> Test kms_force_connector_basic:
>>>          Subgroup force-connector-state:
>>>                  pass       -> SKIP       (ilk-hp8440p)
>>> Test kms_pipe_crc_basic:
>>>          Subgroup nonblocking-crc-pipe-a:
>>>                  dmesg-warn -> PASS       (snb-x220t)
>>>          Subgroup nonblocking-crc-pipe-a-frame-sequence:
>>>                  pass       -> DMESG-WARN (snb-dellxps)
>>
>> Same.
>>
>>>          Subgroup suspend-read-crc-pipe-c:
>>>                  pass       -> DMESG-WARN (bsw-nuc-2)
>>
>>
>> Unrelated lockdep splat: https://bugs.freedesktop.org/show_bug.cgi?id=94350
>
> Is it really the same one? There should be another lockdep chain that
> isn't in bugzilla...

Looks the same to me:

Bz:

[  179.762863] rtcwake/5995 is trying to acquire lock:
[  179.762877]  (s_active#6){++++.+}, at: [<ffffffff8124ec70>] 
kernfs_remove_by_name_ns+0x40/0xa0
[  179.762878]
but task is already holding lock:
[  179.762885]  (cpu_hotplug.lock){+.+.+.}, at: [<ffffffff81078c4d>] 
cpu_hotplug_begin+0x6d/0xc0
[  179.762886]
which lock already depends on the new lock.

This CI run:

[  127.210522] rtcwake/5947 is trying to acquire lock:
[  127.210539]  (s_active#6){++++.+}, at: [<ffffffff81250740>] 
kernfs_remove_by_name_ns+0x40/0xa0
[  127.210540]
but task is already holding lock:
[  127.210549]  (cpu_hotplug.lock){+.+.+.}, at: [<ffffffff81078f5d>] 
cpu_hotplug_begin+0x6d/0xc0
[  127.210550]
which lock already depends on the new lock.

>
>>>                  incomplete -> PASS       (hsw-gt2)
>>> Test pm_rpm:
>>>          Subgroup basic-pci-d3-state:
>>>                  fail       -> DMESG-FAIL (snb-x220t)
>>
>> Device suspended while HW access again.
>>
>>>                  dmesg-warn -> PASS       (snb-dellxps)
>>>
>>> bdw-nuci7        total:194  pass:182  dwarn:0   dfail:0   fail:0   skip:12
>>> bdw-ultra        total:194  pass:173  dwarn:0   dfail:0   fail:0   skip:21
>>> bsw-nuc-2        total:194  pass:156  dwarn:1   dfail:0   fail:0   skip:37
>>> byt-nuc          total:194  pass:159  dwarn:0   dfail:0   fail:0   skip:35
>>> hsw-brixbox      total:194  pass:171  dwarn:1   dfail:0   fail:0   skip:22
>>> hsw-gt2          total:194  pass:176  dwarn:1   dfail:0   fail:0   skip:17
>>> ilk-hp8440p      total:194  pass:129  dwarn:1   dfail:0   fail:0   skip:64
>>> ivb-t430s        total:194  pass:169  dwarn:0   dfail:0   fail:0   skip:25
>>> skl-i7k-2        total:194  pass:171  dwarn:0   dfail:0   fail:0   skip:23
>>> snb-dellxps      total:194  pass:159  dwarn:1   dfail:0   fail:0   skip:34
>>> snb-x220t        total:194  pass:160  dwarn:0   dfail:1   fail:0   skip:33
>>>
>>> Results at /archive/results/CI_IGT_test/Patchwork_1649/
>>>
>>> e7a7673e9840fe8b50a5a2894c75565ec7858a00 drm-intel-nightly: 2016y-03m-19d-10h-09m-53s UTC integration manifest
>>> a1c5f9b1e8b9cbfdab0fb71ccf7a5a0838b56069 drm/i915: Name the anonymous per-engine context struct
>>
>> So looking good.
>>
>> Chris, r-b on v2? It was just a revert of a hunk which changed one
>> instance of ctx->i915->dev->struct_mutex to
>> engine->dev->struct_mutex which the CI reminded me is not allowed in
>> some places.
>
> That one again! One day we will get engine init/fini sorted. Yes,

Yes r-b, just to be really sure?

Regards,

Tvrtko

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