LXR linux/tools/include/linux/stacktrace.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _LIBLOCKDEP_LINUX_STACKTRACE_H_
   3#define _LIBLOCKDEP_LINUX_STACKTRACE_H_
   4
   5#include <execinfo.h>
   6
   7struct stack_trace {
   8        unsigned int nr_entries, max_entries;
   9        unsigned long *entries;
  10        int skip;
  11};
  12
  13static inline void print_stack_trace(struct stack_trace *trace, int spaces)
  14{
  15        backtrace_symbols_fd((void **)trace->entries, trace->nr_entries, 1);
  16}
  17
  18#define save_stack_trace(trace) \
  19        ((trace)->nr_entries =  \
  20                backtrace((void **)(trace)->entries, (trace)->max_entries))
  21
  22static inline int dump_stack(void)
  23{
  24        void *array[64];
  25        size_t size;
  26
  27        size = backtrace(array, 64);
  28        backtrace_symbols_fd(array, size, 1);
  29
  30        return 0;
  31}
  32
  33#endif
  34