/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef PREEMPT_H
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#define PREEMPT_H
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#include <stdbool.h>
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#include "bug_on.h"
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/* This flag contains garbage if preempt_disable_count is 0. */
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extern __thread int thread_cpu_id;
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/* Support recursive preemption disabling. */
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extern __thread int preempt_disable_count;
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void preempt_disable(void);
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void preempt_enable(void);
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static inline void preempt_disable_notrace(void)
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{
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preempt_disable();
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}
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static inline void preempt_enable_no_resched(void)
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{
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preempt_enable();
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}
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static inline void preempt_enable_notrace(void)
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{
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preempt_enable();
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}
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static inline int preempt_count(void)
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{
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return preempt_disable_count;
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}
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static inline bool preemptible(void)
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{
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return !preempt_count();
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}
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static inline int get_cpu(void)
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{
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preempt_disable();
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return thread_cpu_id;
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}
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static inline void put_cpu(void)
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{
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preempt_enable();
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}
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static inline void might_sleep(void)
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{
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BUG_ON(preempt_disable_count);
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}
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#endif
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