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c6eeb4797e
Currently we assume that we know the order in which requests run and so can determine if we need to reissue a switch-to-kernel-context prior to idling. That assumption does not hold for the future, so instead of tracking which barriers have been used, simply determine if we have ever switched away from the kernel context by using the engine and before idling ensure that all engines that have been used since the last idle are synchronously switched back to the kernel context for safety (and else of shrinking memory while idle). v2: Use intel_engine_mask_t and ALL_ENGINES Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190308093657.8640-3-chris@chris-wilson.co.uk
33 lines
788 B
C
33 lines
788 B
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright © 2018 Intel Corporation
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*/
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#include "../i915_drv.h"
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#include "../i915_selftest.h"
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#include "igt_flush_test.h"
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int igt_flush_test(struct drm_i915_private *i915, unsigned int flags)
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{
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cond_resched();
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if (flags & I915_WAIT_LOCKED &&
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i915_gem_switch_to_kernel_context(i915, i915->gt.active_engines)) {
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pr_err("Failed to switch back to kernel context; declaring wedged\n");
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i915_gem_set_wedged(i915);
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}
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if (i915_gem_wait_for_idle(i915, flags, HZ / 5) == -ETIME) {
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pr_err("%pS timed out, cancelling all further testing.\n",
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__builtin_return_address(0));
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GEM_TRACE("%pS timed out.\n", __builtin_return_address(0));
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GEM_TRACE_DUMP();
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i915_gem_set_wedged(i915);
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}
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return i915_terminally_wedged(i915);
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}
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