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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-07-09 13:20:43 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-07-09 13:56:42 +0100 |
| commit | 2621cefaa42b3a7455d30e78831c6b55290d40c8 (patch) | |
| tree | d5d7b69cd7441d061af741c0f0a8a265d531a9ba /drivers/gpu/drm/i915/i915_gem.c | |
| parent | ec625fb932bb057e2d3c2ed28eee56a827385ab8 (diff) | |
| download | linux-2621cefaa42b3a7455d30e78831c6b55290d40c8.tar.bz2 | |
drm/i915: Provide a timeout to i915_gem_wait_for_idle() on setup
With a broken GPU we expect it to fail during the initial
GPU setup where do a couple of context switches to record the defaults.
This is a task that takes a few milliseconds even on the slowest of
devices, but we may have to wait 60s for hangcheck to give in and
declare the machine inoperable. In this a case where any gpu hang is
unacceptable, both from a timeliness and practical standpoint.
We can therefore set a timeout on our wait-for-idle that is shorter than
the hangcheck (which may be up to 60s for a declaring a wedged driver)
and so detect the broken GPU much more quickly during driver load (and
so prevent stalling userspace for ages).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180709122044.7028-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 91d705a67d38..b35cbfd16c9c 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -5362,11 +5362,11 @@ static int __intel_engines_record_defaults(struct drm_i915_private *i915) if (err) goto err_active; - err = i915_gem_wait_for_idle(i915, - I915_WAIT_LOCKED, - MAX_SCHEDULE_TIMEOUT); - if (err) + if (i915_gem_wait_for_idle(i915, I915_WAIT_LOCKED, HZ / 5)) { + i915_gem_set_wedged(i915); + err = -EIO; /* Caller will declare us wedged */ goto err_active; + } assert_kernel_context_is_current(i915); |