b0f82b81fe
Drop this argument now that we always want to rewind only to the state of the first caller. It means frame pointers are not necessary anymore to reliably get the source of an event. But this also means we need this helper to be a macro now, as an inline function is not an option since we need to know when to provide a default implentation. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Cc: David Miller <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/*
|
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
|
* Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
|
|
*/
|
|
|
|
#ifndef _ASM_X86_STACKTRACE_H
|
|
#define _ASM_X86_STACKTRACE_H
|
|
|
|
#include <linux/uaccess.h>
|
|
|
|
extern int kstack_depth_to_print;
|
|
|
|
struct thread_info;
|
|
struct stacktrace_ops;
|
|
|
|
typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo,
|
|
unsigned long *stack,
|
|
unsigned long bp,
|
|
const struct stacktrace_ops *ops,
|
|
void *data,
|
|
unsigned long *end,
|
|
int *graph);
|
|
|
|
extern unsigned long
|
|
print_context_stack(struct thread_info *tinfo,
|
|
unsigned long *stack, unsigned long bp,
|
|
const struct stacktrace_ops *ops, void *data,
|
|
unsigned long *end, int *graph);
|
|
|
|
extern unsigned long
|
|
print_context_stack_bp(struct thread_info *tinfo,
|
|
unsigned long *stack, unsigned long bp,
|
|
const struct stacktrace_ops *ops, void *data,
|
|
unsigned long *end, int *graph);
|
|
|
|
/* Generic stack tracer with callbacks */
|
|
|
|
struct stacktrace_ops {
|
|
void (*warning)(void *data, char *msg);
|
|
/* msg must contain %s for the symbol */
|
|
void (*warning_symbol)(void *data, char *msg, unsigned long symbol);
|
|
void (*address)(void *data, unsigned long address, int reliable);
|
|
/* On negative return stop dumping */
|
|
int (*stack)(void *data, char *name);
|
|
walk_stack_t walk_stack;
|
|
};
|
|
|
|
void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
|
|
unsigned long *stack, unsigned long bp,
|
|
const struct stacktrace_ops *ops, void *data);
|
|
|
|
#ifdef CONFIG_X86_32
|
|
#define STACKSLOTS_PER_LINE 8
|
|
#define get_bp(bp) asm("movl %%ebp, %0" : "=r" (bp) :)
|
|
#else
|
|
#define STACKSLOTS_PER_LINE 4
|
|
#define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :)
|
|
#endif
|
|
|
|
extern void
|
|
show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
|
|
unsigned long *stack, unsigned long bp, char *log_lvl);
|
|
|
|
extern void
|
|
show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
|
|
unsigned long *sp, unsigned long bp, char *log_lvl);
|
|
|
|
extern unsigned int code_bytes;
|
|
|
|
/* The form of the top of the frame on the stack */
|
|
struct stack_frame {
|
|
struct stack_frame *next_frame;
|
|
unsigned long return_address;
|
|
};
|
|
|
|
struct stack_frame_ia32 {
|
|
u32 next_frame;
|
|
u32 return_address;
|
|
};
|
|
|
|
static inline unsigned long caller_frame_pointer(void)
|
|
{
|
|
struct stack_frame *frame;
|
|
|
|
get_bp(frame);
|
|
|
|
#ifdef CONFIG_FRAME_POINTER
|
|
frame = frame->next_frame;
|
|
#endif
|
|
|
|
return (unsigned long)frame;
|
|
}
|
|
|
|
#endif /* _ASM_X86_STACKTRACE_H */
|