Line data    Source code

       1           0 : /*
       2             :  * Copyright (c) 2024 Meta Platforms.
       3             :  *
       4             :  * SPDX-License-Identifier: Apache-2.0
       5             :  */
       6             : 
       7             : #ifndef ZEPHYR_INCLUDE_ZEPHYR_ARCH_COMMON_ARCH_INLINES_H_
       8             : #define ZEPHYR_INCLUDE_ZEPHYR_ARCH_COMMON_ARCH_INLINES_H_
       9             : 
      10             : #ifndef ZEPHYR_INCLUDE_ARCH_INLINES_H_
      11             : #error "This header shouldn't be included directly"
      12             : #endif /* ZEPHYR_INCLUDE_ARCH_INLINES_H_ */
      13             : 
      14             : #ifndef _ASMLANGUAGE
      15             : 
      16             : #include <zephyr/kernel_structs.h>
      17             : 
      18             : #ifndef CONFIG_ARCH_HAS_CUSTOM_CURRENT_IMPL
      19           0 : static ALWAYS_INLINE struct k_thread *arch_current_thread(void)
      20             : {
      21             : #ifdef CONFIG_SMP
      22             :         /* In SMP, arch_current_thread() is a field read from _current_cpu, which
      23             :          * can race with preemption before it is read.  We must lock
      24             :          * local interrupts when reading it.
      25             :          */
      26             :         unsigned int k = arch_irq_lock();
      27             : 
      28             :         struct k_thread *ret = _current_cpu->current;
      29             : 
      30             :         arch_irq_unlock(k);
      31             : #else
      32             :         struct k_thread *ret = _kernel.cpus[0].current;
      33             : #endif /* CONFIG_SMP */
      34             :         return ret;
      35             : }
      36             : 
      37           0 : static ALWAYS_INLINE void arch_current_thread_set(struct k_thread *thread)
      38             : {
      39             :         _current_cpu->current = thread;
      40             : }
      41             : #endif /* CONFIG_ARCH_HAS_CUSTOM_CURRENT_IMPL */
      42             : 
      43             : #endif /* _ASMLANGUAGE */
      44             : 
      45             : #endif /* ZEPHYR_INCLUDE_ZEPHYR_ARCH_COMMON_ARCH_INLINES_H_ */