Bug 107376

Summary: Raven: `flush_delayed_work()` takes 500 ms
Product: DRI Reporter: Paul Menzel <pmenzel+bugs.freedesktop.org>
Component: DRM/AMDgpuAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED MOVED QA Contact:
Severity: normal    
Priority: medium    
Version: DRI git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Bug Depends on:    
Bug Blocks: 107278    
Attachments:
Description Flags
HTML output of `sudo ./sleepgraph.py -config config/suspend-callgraph.cfg` (devicelist: amdgpu, maxdepth: 12) none

Description Paul Menzel 2018-07-25 13:51:58 UTC 
Created attachment 140811 [details]
HTML output of `sudo ./sleepgraph.py -config config/suspend-callgraph.cfg` (devicelist: amdgpu, maxdepth: 12)

Created attachment 140810 [details]
HTML output of `sudo ./sleepgraph.py -config config/suspend-callgraph.cfg` (devicelist: amdgpu, maxdepth: 12)

Profiling the suspend and resume time [1] on a MSI B350M MORTAR (MS-7A37) with AMD Ryzen 3 2200G with Radeon Vega Graphics with Linux 4.18-rc6+ and amd-staging-drm-next [2], `pci_pm_suspend()` takes over one second, which is too long [3], cf. bug 107278 [3].

This is spent in `amdgpu_device_ip_resume_phase2()`, where 505 ms are spent in `flush_delayed_work()`.

•   flush_delayed_work (505.026 ms @ 98.640854)
    […]
    •   flush_work (505.017 ms @ 98.640863)
        […]
        •   wait_for_completion (504.985 ms @ 98.640894)
            […]
            •    schedule_timeout (504.963 ms @ 98.640914)
                 […]
                 •   schedule (504.963 ms @ 98.640914)

[1]: https://01.org/suspendresume
[2]: https://cgit.freedesktop.org/~agd5f/linux/log/?h=amd-staging-drm-next
[3]: https://bugs.freedesktop.org/show_bug.cgi?id=107278
Comment 1 Martin Peres 2019-11-20 07:49:23 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/464.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.