LCOV - code coverage report
Current view: top level - include/asm-generic - irq_regs.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2014-02-18 Functions: 0 0 -
Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /* Fallback per-CPU frame pointer holder
       2                 :            :  *
       3                 :            :  * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
       4                 :            :  * Written by David Howells (dhowells@redhat.com)
       5                 :            :  *
       6                 :            :  * This program is free software; you can redistribute it and/or
       7                 :            :  * modify it under the terms of the GNU General Public License
       8                 :            :  * as published by the Free Software Foundation; either version
       9                 :            :  * 2 of the License, or (at your option) any later version.
      10                 :            :  */
      11                 :            : 
      12                 :            : #ifndef _ASM_GENERIC_IRQ_REGS_H
      13                 :            : #define _ASM_GENERIC_IRQ_REGS_H
      14                 :            : 
      15                 :            : #include <linux/percpu.h>
      16                 :            : 
      17                 :            : /*
      18                 :            :  * Per-cpu current frame pointer - the location of the last exception frame on
      19                 :            :  * the stack
      20                 :            :  */
      21                 :            : DECLARE_PER_CPU(struct pt_regs *, __irq_regs);
      22                 :            : 
      23                 :            : static inline struct pt_regs *get_irq_regs(void)
      24                 :            : {
      25                 :   37575868 :         return __this_cpu_read(__irq_regs);
      26                 :            : }
      27                 :            : 
      28                 :            : static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
      29                 :            : {
      30                 :            :         struct pt_regs *old_regs;
      31                 :            : 
      32                 :            :         old_regs = __this_cpu_read(__irq_regs);
      33                 :            :         __this_cpu_write(__irq_regs, new_regs);
      34                 :            :         return old_regs;
      35                 :            : }
      36                 :            : 
      37                 :            : #endif /* _ASM_GENERIC_IRQ_REGS_H */

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