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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f351d087d8
When setting up reset, we may need to recursively prepare an engine. In which case we should only synchronously flush the tasklets on the outer most call, the inner calls will then be inside an atomic section where the tasklet will never be run (and so the sync will never complete). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180516183355.10553-2-chris@chris-wilson.co.uk
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef __I915_GEM_H__
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#define __I915_GEM_H__
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#include <linux/bug.h>
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#include <linux/interrupt.h>
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struct drm_i915_private;
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#ifdef CONFIG_DRM_I915_DEBUG_GEM
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#define GEM_SHOW_DEBUG() (drm_debug & DRM_UT_DRIVER)
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#define GEM_BUG_ON(condition) do { if (unlikely((condition))) { \
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pr_err("%s:%d GEM_BUG_ON(%s)\n", \
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__func__, __LINE__, __stringify(condition)); \
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GEM_TRACE("%s:%d GEM_BUG_ON(%s)\n", \
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__func__, __LINE__, __stringify(condition)); \
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BUG(); \
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} \
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} while(0)
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#define GEM_WARN_ON(expr) WARN_ON(expr)
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#define GEM_DEBUG_DECL(var) var
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#define GEM_DEBUG_EXEC(expr) expr
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#define GEM_DEBUG_BUG_ON(expr) GEM_BUG_ON(expr)
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#else
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#define GEM_SHOW_DEBUG() (0)
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#define GEM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr)
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#define GEM_WARN_ON(expr) (BUILD_BUG_ON_INVALID(expr), 0)
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#define GEM_DEBUG_DECL(var)
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#define GEM_DEBUG_EXEC(expr) do { } while (0)
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#define GEM_DEBUG_BUG_ON(expr)
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#endif
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#if IS_ENABLED(CONFIG_DRM_I915_TRACE_GEM)
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#define GEM_TRACE(...) trace_printk(__VA_ARGS__)
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#define GEM_TRACE_DUMP() ftrace_dump(DUMP_ALL)
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#else
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#define GEM_TRACE(...) do { } while (0)
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#define GEM_TRACE_DUMP() do { } while (0)
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#endif
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#define I915_NUM_ENGINES 8
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void i915_gem_park(struct drm_i915_private *i915);
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void i915_gem_unpark(struct drm_i915_private *i915);
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static inline void __tasklet_disable_sync_once(struct tasklet_struct *t)
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{
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if (atomic_inc_return(&t->count) == 1)
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tasklet_unlock_wait(t);
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}
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#endif /* __I915_GEM_H__ */
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