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drm/i915/tasklet: separate local hacks around struct tasklet_struct
Add a dedicated file for the local functions around struct tasklet_struct. Far from ideal, but better placed in a dedicated file than i915_gem.h. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220607094207.536699-1-jani.nikula@intel.com
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1d74269457
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330c1b3180
4 changed files with 45 additions and 34 deletions
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@ -37,5 +37,5 @@ Smaller things:
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https://lore.kernel.org/linux-mm/20210301083320.943079-1-hch@lst.de/
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- tasklet helpers in i915_gem.h also look a bit misplaced and should
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- tasklet helpers in i915_tasklet.h also look a bit misplaced and should
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probably be moved to tasklet headers.
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@ -26,7 +26,6 @@
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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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#include <drm/drm_drv.h>
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@ -85,36 +84,4 @@ struct drm_i915_private;
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#define I915_GEM_IDLE_TIMEOUT (HZ / 5)
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static inline void tasklet_lock(struct tasklet_struct *t)
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{
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while (!tasklet_trylock(t))
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cpu_relax();
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}
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static inline bool tasklet_is_locked(const struct tasklet_struct *t)
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{
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return test_bit(TASKLET_STATE_RUN, &t->state);
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}
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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_fetch_inc(&t->count))
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tasklet_unlock_spin_wait(t);
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}
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static inline bool __tasklet_is_enabled(const struct tasklet_struct *t)
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{
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return !atomic_read(&t->count);
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}
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static inline bool __tasklet_enable(struct tasklet_struct *t)
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{
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return atomic_dec_and_test(&t->count);
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}
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static inline bool __tasklet_is_scheduled(struct tasklet_struct *t)
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{
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return test_bit(TASKLET_STATE_SCHED, &t->state);
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}
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#endif /* __I915_GEM_H__ */
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@ -12,6 +12,7 @@
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#include <linux/kernel.h>
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#include "i915_scheduler_types.h"
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#include "i915_tasklet.h"
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struct drm_printer;
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43
drivers/gpu/drm/i915/i915_tasklet.h
Normal file
43
drivers/gpu/drm/i915/i915_tasklet.h
Normal file
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@ -0,0 +1,43 @@
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/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2022 Intel Corporation
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*/
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#ifndef __I915_TASKLET_H__
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#define __I915_TASKLET_H__
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#include <linux/interrupt.h>
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static inline void tasklet_lock(struct tasklet_struct *t)
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{
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while (!tasklet_trylock(t))
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cpu_relax();
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}
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static inline bool tasklet_is_locked(const struct tasklet_struct *t)
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{
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return test_bit(TASKLET_STATE_RUN, &t->state);
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}
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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_fetch_inc(&t->count))
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tasklet_unlock_spin_wait(t);
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}
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static inline bool __tasklet_is_enabled(const struct tasklet_struct *t)
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{
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return !atomic_read(&t->count);
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}
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static inline bool __tasklet_enable(struct tasklet_struct *t)
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{
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return atomic_dec_and_test(&t->count);
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}
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static inline bool __tasklet_is_scheduled(struct tasklet_struct *t)
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{
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return test_bit(TASKLET_STATE_SCHED, &t->state);
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}
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#endif /* __I915_TASKLET_H__ */
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