mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 01:04:19 +08:00
ef769e3208
Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
|
|
* arch/arm64/include/asm/ftrace.h
|
|
*
|
|
* Copyright (C) 2013 Linaro Limited
|
|
* Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#ifndef __ASM_FTRACE_H
|
|
#define __ASM_FTRACE_H
|
|
|
|
#include <asm/insn.h>
|
|
|
|
#define MCOUNT_ADDR ((unsigned long)_mcount)
|
|
#define MCOUNT_INSN_SIZE AARCH64_INSN_SIZE
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/compat.h>
|
|
|
|
extern void _mcount(unsigned long);
|
|
extern void *return_address(unsigned int);
|
|
|
|
struct dyn_arch_ftrace {
|
|
/* No extra data needed for arm64 */
|
|
};
|
|
|
|
extern unsigned long ftrace_graph_call;
|
|
|
|
extern void return_to_handler(void);
|
|
|
|
static inline unsigned long ftrace_call_adjust(unsigned long addr)
|
|
{
|
|
/*
|
|
* addr is the address of the mcount call instruction.
|
|
* recordmcount does the necessary offset calculation.
|
|
*/
|
|
return addr;
|
|
}
|
|
|
|
#define ftrace_return_address(n) return_address(n)
|
|
|
|
/*
|
|
* Because AArch32 mode does not share the same syscall table with AArch64,
|
|
* tracing compat syscalls may result in reporting bogus syscalls or even
|
|
* hang-up, so just do not trace them.
|
|
* See kernel/trace/trace_syscalls.c
|
|
*
|
|
* x86 code says:
|
|
* If the user really wants these, then they should use the
|
|
* raw syscall tracepoints with filtering.
|
|
*/
|
|
#define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS
|
|
static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs)
|
|
{
|
|
return is_compat_task();
|
|
}
|
|
#endif /* ifndef __ASSEMBLY__ */
|
|
|
|
#endif /* __ASM_FTRACE_H */
|