83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _ASM_ARM_FTRACE
|
||
|
|
#define _ASM_ARM_FTRACE
|
||
|
|
|
||
|
|
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
|
||
|
|
#define ARCH_SUPPORTS_FTRACE_OPS 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_FUNCTION_TRACER
|
||
|
|
#define MCOUNT_ADDR ((unsigned long)(__gnu_mcount_nc))
|
||
|
|
#define MCOUNT_INSN_SIZE 4 /* sizeof mcount call */
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
extern void mcount(void);
|
||
|
|
extern void __gnu_mcount_nc(void);
|
||
|
|
|
||
|
|
#ifdef CONFIG_DYNAMIC_FTRACE
|
||
|
|
struct dyn_arch_ftrace {
|
||
|
|
#ifdef CONFIG_OLD_MCOUNT
|
||
|
|
bool old_mcount;
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline unsigned long ftrace_call_adjust(unsigned long addr)
|
||
|
|
{
|
||
|
|
/* With Thumb-2, the recorded addresses have the lsb set */
|
||
|
|
return addr & ~1;
|
||
|
|
}
|
||
|
|
|
||
|
|
extern void ftrace_caller_old(void);
|
||
|
|
extern void ftrace_call_old(void);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
|
||
|
|
#if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND)
|
||
|
|
/*
|
||
|
|
* return_address uses walk_stackframe to do it's work. If both
|
||
|
|
* CONFIG_FRAME_POINTER=y and CONFIG_ARM_UNWIND=y walk_stackframe uses unwind
|
||
|
|
* information. For this to work in the function tracer many functions would
|
||
|
|
* have to be marked with __notrace. So for now just depend on
|
||
|
|
* !CONFIG_ARM_UNWIND.
|
||
|
|
*/
|
||
|
|
|
||
|
|
void *return_address(unsigned int);
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
static inline void *return_address(unsigned int level)
|
||
|
|
{
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define ftrace_return_address(n) return_address(n)
|
||
|
|
|
||
|
|
#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
|
||
|
|
|
||
|
|
static inline bool arch_syscall_match_sym_name(const char *sym,
|
||
|
|
const char *name)
|
||
|
|
{
|
||
|
|
if (!strcmp(sym, "sys_mmap2"))
|
||
|
|
sym = "sys_mmap_pgoff";
|
||
|
|
else if (!strcmp(sym, "sys_statfs64_wrapper"))
|
||
|
|
sym = "sys_statfs64";
|
||
|
|
else if (!strcmp(sym, "sys_fstatfs64_wrapper"))
|
||
|
|
sym = "sys_fstatfs64";
|
||
|
|
else if (!strcmp(sym, "sys_arm_fadvise64_64"))
|
||
|
|
sym = "sys_fadvise64_64";
|
||
|
|
|
||
|
|
/* Ignore case since sym may start with "SyS" instead of "sys" */
|
||
|
|
return !strcasecmp(sym, name);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* ifndef __ASSEMBLY__ */
|
||
|
|
|
||
|
|
#endif /* _ASM_ARM_FTRACE */
|