Release 4.14 arch/x86/include/asm/stacktrace.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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>
#include <linux/ptrace.h>
#include <asm/switch_to.h>
enum stack_type {
STACK_TYPE_UNKNOWN,
STACK_TYPE_TASK,
STACK_TYPE_IRQ,
STACK_TYPE_SOFTIRQ,
STACK_TYPE_EXCEPTION,
STACK_TYPE_EXCEPTION_LAST = STACK_TYPE_EXCEPTION + N_EXCEPTION_STACKS-1,
};
struct stack_info {
enum stack_type type;
unsigned long *begin, *end, *next_sp;
};
bool in_task_stack(unsigned long *stack, struct task_struct *task,
struct stack_info *info);
int get_stack_info(unsigned long *stack, struct task_struct *task,
struct stack_info *info, unsigned long *visit_mask);
const char *stack_type_name(enum stack_type type);
static inline bool on_stack(struct stack_info *info, void *addr, size_t len)
{
void *begin = info->begin;
void *end = info->end;
return (info->type != STACK_TYPE_UNKNOWN &&
addr >= begin && addr < end &&
addr + len > begin && addr + len <= end);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Poimboeuf | 64 | 100.00% | 1 | 100.00% |
| Total | 64 | 100.00% | 1 | 100.00% |
#ifdef CONFIG_X86_32
#define STACKSLOTS_PER_LINE 8
#else
#define STACKSLOTS_PER_LINE 4
#endif
#ifdef CONFIG_FRAME_POINTER
static inline unsigned long *
get_frame_pointer(struct task_struct *task, struct pt_regs *regs)
{
if (regs)
return (unsigned long *)regs->bp;
if (task == current)
return __builtin_frame_address(0);
return &((struct inactive_task_frame *)task->thread.sp)->bp;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Soeren Sandmann Pedersen | 43 | 69.35% | 1 | 25.00% |
| Josh Poimboeuf | 13 | 20.97% | 2 | 50.00% |
| Brian Gerst | 6 | 9.68% | 1 | 25.00% |
| Total | 62 | 100.00% | 4 | 100.00% |
#else
static inline unsigned long *
get_frame_pointer(struct task_struct *task, struct pt_regs *regs)
{
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Soeren Sandmann Pedersen | 19 | 86.36% | 1 | 50.00% |
| Josh Poimboeuf | 3 | 13.64% | 1 | 50.00% |
| Total | 22 | 100.00% | 2 | 100.00% |
#endif /* CONFIG_FRAME_POINTER */
static inline unsigned long *
get_stack_pointer(struct task_struct *task, struct pt_regs *regs)
{
if (regs)
return (unsigned long *)kernel_stack_pointer(regs);
if (task == current)
return __builtin_frame_address(0);
return (unsigned long *)task->thread.sp;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Poimboeuf | 58 | 100.00% | 1 | 100.00% |
| Total | 58 | 100.00% | 1 | 100.00% |
void show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs,
unsigned long *stack, 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;
frame = __builtin_frame_address(0);
#ifdef CONFIG_FRAME_POINTER
frame = frame->next_frame;
#endif
return (unsigned long)frame;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Frédéric Weisbecker | 36 | 90.00% | 2 | 66.67% |
| Josh Poimboeuf | 4 | 10.00% | 1 | 33.33% |
| Total | 40 | 100.00% | 3 | 100.00% |
#endif /* _ASM_X86_STACKTRACE_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Josh Poimboeuf | 238 | 54.34% | 4 | 36.36% |
| Frédéric Weisbecker | 109 | 24.89% | 2 | 18.18% |
| Soeren Sandmann Pedersen | 72 | 16.44% | 1 | 9.09% |
| Brian Gerst | 9 | 2.05% | 1 | 9.09% |
| Andi Kleen | 6 | 1.37% | 1 | 9.09% |
| H. Peter Anvin | 3 | 0.68% | 1 | 9.09% |
| Greg Kroah-Hartman | 1 | 0.23% | 1 | 9.09% |
| Total | 438 | 100.00% | 11 | 100.00% |
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