LCOV - code coverage report
Current view: top level - include/asm-generic - irq_regs.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 3 3 100.0 %
Date: 2023-08-24 13:40:31 Functions: 0 0 -

          Line data    Source code
       1             : /* SPDX-License-Identifier: GPL-2.0-or-later */
       2             : /* Fallback per-CPU frame pointer holder
       3             :  *
       4             :  * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
       5             :  * Written by David Howells (dhowells@redhat.com)
       6             :  */
       7             : 
       8             : #ifndef _ASM_GENERIC_IRQ_REGS_H
       9             : #define _ASM_GENERIC_IRQ_REGS_H
      10             : 
      11             : #include <linux/percpu.h>
      12             : 
      13             : /*
      14             :  * Per-cpu current frame pointer - the location of the last exception frame on
      15             :  * the stack
      16             :  */
      17             : DECLARE_PER_CPU(struct pt_regs *, __irq_regs);
      18             : 
      19             : static inline struct pt_regs *get_irq_regs(void)
      20             : {
      21          10 :         return __this_cpu_read(__irq_regs);
      22             : }
      23             : 
      24             : static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
      25             : {
      26             :         struct pt_regs *old_regs;
      27             : 
      28          10 :         old_regs = __this_cpu_read(__irq_regs);
      29          10 :         __this_cpu_write(__irq_regs, new_regs);
      30             :         return old_regs;
      31             : }
      32             : 
      33             : #endif /* _ASM_GENERIC_IRQ_REGS_H */

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