On 06/11/2014 06:54 AM, Ben Widawsky wrote: > On Tue, Jun 10, 2014 at 08:59:32PM +0100, Lewis Toohey wrote: >> On 10 June 2014 17:58, Ben Widawsky <ben@xxxxxxxxxxxx> wrote: >>> On Tue, Jun 10, 2014 at 01:33:51PM +0800, Aaron Lu wrote: >>>> +Ben Widawsky & Daniel Vetter >>>> >>>> On 06/09/2014 03:38 PM, Lewis Toohey wrote: >>>>> >>>>> Hi Aaron >>>>> >>>>> Firstly, yes the sluggish performance I was referring to is >>>>> experienced in the GUI environment. Jerky graphics and CPU fan appears >>>>> to max out and stay there. Old kernels (e.g. the Ubuntu default >>>>> kernel) do not do this and just restore perfectly. >>>>> >>>>> I have completed the bisect as requested. Please find the full log >>>>> below. I am slightly unconvinced, as building the previous commit in >>>>> the log still seems to have the same problem, however, that commit is >>>>> a "merge" and I don't really know what this means. >>>>> >>>>> Many thanks >>>>> >>>>> Bisect Log: >>>>> git bisect start >>>>> # good: [455c6fdbd219161bd09b1165f11699d6d73de11c] Linux 3.14 >>>>> git bisect good 455c6fdbd219161bd09b1165f11699d6d73de11c >>>>> # bad: [c9eaa447e77efe77b7fa4c953bd62de8297fd6c5] Linux 3.15-rc1 >>>>> git bisect bad c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 >>>>> # good: [cd6362befe4cc7bf589a5236d2a780af2d47bcc9] Merge >>>>> git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next >>>>> git bisect good cd6362befe4cc7bf589a5236d2a780af2d47bcc9 >>>>> # good: [d2b150d0647e055d7a71b1c33140280550b27dd6] Merge tag 'sh-3.15' >>>>> of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc >>>>> git bisect good d2b150d0647e055d7a71b1c33140280550b27dd6 >>>>> # good: [5fb6b953bb7aa86a9c8ea760934982cedc45c52b] >>>>> include/linux/syscalls.h: add sys_renameat2() prototype >>>>> git bisect good 5fb6b953bb7aa86a9c8ea760934982cedc45c52b >>>>> # bad: [ffddc5fd19b219f557fd4a81168ce8784a4faced] fs/ncpfs/dir.c: fix >>>>> indenting in ncp_lookup() >>>>> git bisect bad ffddc5fd19b219f557fd4a81168ce8784a4faced >>>>> # bad: [978c6050165bba52eab7ef3581d447eb215def77] Merge branch >>>>> 'drm-docs' of ssh://people.freedesktop.org/~danvet/drm into drm-next >>>>> git bisect bad 978c6050165bba52eab7ef3581d447eb215def77 >>>>> # bad: [262de1453184f65e5ccfe45790f93d41f7339d49] drm/i915: Directly >>>>> return the vma from bind_to_vm >>>>> git bisect bad 262de1453184f65e5ccfe45790f93d41f7339d49 >>>>> # bad: [031994ee8dedfa69d3a7caa43e93f3c282bc38f9] drm/i915: Implement >>>>> WaIncreaseL3CreditsForVLVB0:vlv >>>>> git bisect bad 031994ee8dedfa69d3a7caa43e93f3c282bc38f9 >>>>> # bad: [f72d21eddfa900bfa2674195dcc0203e18d0cc62] drm/i915: Place the >>>>> Global GTT VM first in the list of VM >>>>> git bisect bad f72d21eddfa900bfa2674195dcc0203e18d0cc62 >>>>> # bad: [d6660add648d10e7e35085d8c7d2653e0f9f61b7] drm/i915: Generalize >>>>> PPGTT init >>>>> git bisect bad d6660add648d10e7e35085d8c7d2653e0f9f61b7 >>>>> # bad: [b731d33d05dd5ce6b387cbadb0d9d24cb3732b40] drm/i915: relax >>>>> context alignment >>>>> git bisect bad b731d33d05dd5ce6b387cbadb0d9d24cb3732b40 >>>>> # bad: [a7b910789f77afa40ae0816d22339e9d25723c6e] drm/i915: Add vm to >>>>> error BO capture >>>>> git bisect bad a7b910789f77afa40ae0816d22339e9d25723c6e >>>>> # bad: [6e164c3382314a1f63526fa7a4322a17318d0e32] drm/i915: Allow ggtt >>>>> lookups to not WARN >>>>> git bisect bad 6e164c3382314a1f63526fa7a4322a17318d0e32 >>>>> # bad: [6f425321e02a1b6c5e90b70f8fab7c140fcaeefb] drm/i915: Don't >>>>> unconditionally try to deref aliasing ppgtt >>>>> git bisect bad 6f425321e02a1b6c5e90b70f8fab7c140fcaeefb >>>>> # bad: [e178f7057b81c87a7ceaae0ca204487b6f7eedcf] drm/i915: Provide >>>>> PDP updates via MMIO >>>>> git bisect bad e178f7057b81c87a7ceaae0ca204487b6f7eedcf >>>>> # first bad commit: [e178f7057b81c87a7ceaae0ca204487b6f7eedcf] >>>>> drm/i915: Provide PDP updates via MMIO >>>>> >>>> >>>> The commit looks like related, I've added the commit author. >>>> >>>> Ben, >>>> Do you have any suggestions? Does the above commit have any chance of >>>> causing sluggish performance problem after a resume? >>> >>> What this comment actually does is use MMIO writes for the page tables >>> after a GPU hang/reset. (What a poorly named commit message). >>> >>> Can you please provide the full dmesg with the drm.debug=0x2? >>> >> >> Hi Ben >> >> Thank you for responding. >> >> Just to verify that I have done this correctly, I added >> "drm.debug=0x2" to the kernel command line (in Grub), booted, >> suspended and resumed, and then ran Dmesg. >> >> I wasn't sure exactly where to put it, so please find a copy of the output here: >> http://www.toohey.co.uk/dmesg >> >> I hope that is helpful. If you need any further information please let me know. >> >> Many thanks > > I only see radeon stuff in that dmesg. But you did the right thing to > grub. Oh yes, this is a AMD graphics card so the bisected commit can't be the culprit. No ideas now, Lewis, I'm afraid you will need try harder to find the bad commit. Thanks, Aaron -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
