[Bug 106373] [CI] igt at drv_module_reload@basic-reload - dmesg-fail - Failed assertion: __gem_execbuf(fd, execbuf) == 0 && Failed to idle engines, declaring wedged!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106373

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
Should be improved by

commit dd0cf235d81f24c1ba80c4a000bafc9f2dce3840
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Sun May 6 18:13:28 2018 +0100

    drm/i915: Speed up idle detection by kicking the tasklets

    We rely on ksoftirqd to run in a timely fashion in order to drain the
    execlists queue. Quite frequently, it does not. In some cases we may see
    latencies of over 200ms triggering our idle timeouts and forcing us to
    declare the driver wedged!

    Thus we can speed up idle detection by bypassing ksoftirqd in these
    cases and flush our tasklet to confirm if we are indeed still waiting
    for the ELSP to drain.

    v2: Put the execlists.first check back; it is required for handling
    reset!

    References: https://bugs.freedesktop.org/show_bug.cgi?id=106373
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
    Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20180506171328.30034-1-chris@chris-wilson.co.uk

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