diff options
Diffstat (limited to 'arch/s390/include/asm/ftrace.h')
| -rw-r--r-- | arch/s390/include/asm/ftrace.h | 31 |
1 files changed, 10 insertions, 21 deletions
diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h index 68d362f8d6c1..695c61989f97 100644 --- a/arch/s390/include/asm/ftrace.h +++ b/arch/s390/include/asm/ftrace.h @@ -2,16 +2,9 @@ #ifndef _ASM_S390_FTRACE_H #define _ASM_S390_FTRACE_H +#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR #define ARCH_SUPPORTS_FTRACE_OPS 1 - -#if defined(CC_USING_HOTPATCH) || defined(CC_USING_NOP_MCOUNT) #define MCOUNT_INSN_SIZE 6 -#else -#define MCOUNT_INSN_SIZE 24 -#define MCOUNT_RETURN_FIXUP 18 -#endif - -#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR #ifndef __ASSEMBLY__ @@ -22,7 +15,6 @@ #define ftrace_return_address(n) __builtin_return_address(n) #endif -void _mcount(void); void ftrace_caller(void); extern char ftrace_graph_caller_end; @@ -30,12 +22,20 @@ extern unsigned long ftrace_plt; struct dyn_arch_ftrace { }; -#define MCOUNT_ADDR ((unsigned long)_mcount) +#define MCOUNT_ADDR 0 #define FTRACE_ADDR ((unsigned long)ftrace_caller) #define KPROBE_ON_FTRACE_NOP 0 #define KPROBE_ON_FTRACE_CALL 1 +struct module; +struct dyn_ftrace; +/* + * Either -mhotpatch or -mnop-mcount is used - no explicit init is required + */ +static inline int ftrace_init_nop(struct module *mod, struct dyn_ftrace *rec) { return 0; } +#define ftrace_init_nop ftrace_init_nop + static inline unsigned long ftrace_call_adjust(unsigned long addr) { return addr; @@ -49,28 +49,17 @@ struct ftrace_insn { static inline void ftrace_generate_nop_insn(struct ftrace_insn *insn) { #ifdef CONFIG_FUNCTION_TRACER -#if defined(CC_USING_HOTPATCH) || defined(CC_USING_NOP_MCOUNT) /* brcl 0,0 */ insn->opc = 0xc004; insn->disp = 0; -#else - /* jg .+24 */ - insn->opc = 0xc0f4; - insn->disp = MCOUNT_INSN_SIZE / 2; -#endif #endif } static inline int is_ftrace_nop(struct ftrace_insn *insn) { #ifdef CONFIG_FUNCTION_TRACER -#if defined(CC_USING_HOTPATCH) || defined(CC_USING_NOP_MCOUNT) if (insn->disp == 0) return 1; -#else - if (insn->disp == MCOUNT_INSN_SIZE / 2) - return 1; -#endif #endif return 0; } |