330c1b3180
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
44 lines
912 B
C
44 lines
912 B
C
/* 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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