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 <[email protected]> Cc: Michel Thierry <[email protected]> Cc: Mika Kuoppala <[email protected]> --- drivers/gpu/drm/i915/i915_drv.c | 14 +++++++------- 1 file 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 -- 2.15.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
