c9cf4dbb4d
arch/x86/include/asm/stacktrace.h and arch/x86/kernel/dumpstack.h declare headers of objects that deal with the same topic. Actually most of the files that include stacktrace.h also include dumpstack.h Although dumpstack.h seems more reserved for internals of stack traces, those are quite often needed to define specialized stack trace operations. And perf event arch headers are going to need access to such low level operations anyway. So don't continue to bother with dumpstack.h as it's not anymore about isolated deep internals. v2: fix struct stack_frame definition conflict in sysprof Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Soeren Sandmann <sandmann@daimi.au.dk>
98 lines
2.5 KiB
C
98 lines
2.5 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 rewind_frame_pointer(int n)
|
|
{
|
|
struct stack_frame *frame;
|
|
|
|
get_bp(frame);
|
|
|
|
#ifdef CONFIG_FRAME_POINTER
|
|
while (n--) {
|
|
if (probe_kernel_address(&frame->next_frame, frame))
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
return (unsigned long)frame;
|
|
}
|
|
|
|
#endif /* _ASM_X86_STACKTRACE_H */
|