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| author | Chris Wilson | 2017-12-16 01:22:06 +0100 |
|---|---|---|
| committer | Chris Wilson | 2017-12-16 10:24:47 +0100 |
| commit | f6ba181ada5572304c29cff44f04c15fa295f547 (patch) | |
| tree | 8a383019224375199a6a2b4e343ac8bbca305805 /drivers/gpu/drm/i915/i915_drv.c | |
| parent | x86/gpu: add CFL to early quirks (diff) | |
| download | kernel-qcow2-linux-f6ba181ada5572304c29cff44f04c15fa295f547.tar.gz kernel-qcow2-linux-f6ba181ada5572304c29cff44f04c15fa295f547.tar.xz kernel-qcow2-linux-f6ba181ada5572304c29cff44f04c15fa295f547.zip | |
drm/i915: Skip an engine reset if it recovered before our preparations
At the beginning of a reset, we disable the submission method and find
the stuck request. We expect to find a stuck request for we have
declared the engine stalled. However, if we find no active request, the
engine must have recovered from its stall before we could issue a reset,
so let the engine continue on without a reset. If the engine is truly
stuck, we will back soon enough with the next reset attempt.
v2: Remove the stale debug message.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171216002206.31737-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index ca9f4b2862eb..6d39fdf2b604 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -2011,19 +2011,19 @@ int i915_reset_engine(struct intel_engine_cs *engine, unsigned int flags) GEM_BUG_ON(!test_bit(I915_RESET_ENGINE + engine->id, &error->flags)); + active_request = i915_gem_reset_prepare_engine(engine); + if (IS_ERR_OR_NULL(active_request)) { + /* Either the previous reset failed, or we pardon the reset. */ + ret = PTR_ERR(active_request); + goto out; + } + if (!(flags & I915_RESET_QUIET)) { dev_notice(engine->i915->drm.dev, "Resetting %s after gpu hang\n", engine->name); } error->reset_engine_count[engine->id]++; - active_request = i915_gem_reset_prepare_engine(engine); - if (IS_ERR(active_request)) { - DRM_DEBUG_DRIVER("Previous reset failed, promote to full reset\n"); - ret = PTR_ERR(active_request); - goto out; - } - if (!engine->i915->guc.execbuf_client) ret = intel_gt_reset_engine(engine->i915, engine); else |