diff options
Diffstat (limited to 'arch/s390/kernel/jump_label.c')
| -rw-r--r-- | arch/s390/kernel/jump_label.c | 51 | 
1 files changed, 31 insertions, 20 deletions
diff --git a/arch/s390/kernel/jump_label.c b/arch/s390/kernel/jump_label.c index 44cc06bedf7..b987ab2c154 100644 --- a/arch/s390/kernel/jump_label.c +++ b/arch/s390/kernel/jump_label.c @@ -18,26 +18,15 @@ struct insn {  } __packed;  struct insn_args { -	unsigned long *target; -	struct insn *insn; -	ssize_t size; +	struct jump_entry *entry; +	enum jump_label_type type;  }; -static int __arch_jump_label_transform(void *data) +static void __jump_label_transform(struct jump_entry *entry, +				   enum jump_label_type type)  { -	struct insn_args *args = data; -	int rc; - -	rc = probe_kernel_write(args->target, args->insn, args->size); -	WARN_ON_ONCE(rc < 0); -	return 0; -} - -void arch_jump_label_transform(struct jump_entry *entry, -			       enum jump_label_type type) -{ -	struct insn_args args;  	struct insn insn; +	int rc;  	if (type == JUMP_LABEL_ENABLE) {  		/* brcl 15,offset */ @@ -49,11 +38,33 @@ void arch_jump_label_transform(struct jump_entry *entry,  		insn.offset = 0;  	} -	args.target = (void *) entry->code; -	args.insn = &insn; -	args.size = JUMP_LABEL_NOP_SIZE; +	rc = probe_kernel_write((void *)entry->code, &insn, JUMP_LABEL_NOP_SIZE); +	WARN_ON_ONCE(rc < 0); +} -	stop_machine(__arch_jump_label_transform, &args, NULL); +static int __sm_arch_jump_label_transform(void *data) +{ +	struct insn_args *args = data; + +	__jump_label_transform(args->entry, args->type); +	return 0; +} + +void arch_jump_label_transform(struct jump_entry *entry, +			       enum jump_label_type type) +{ +	struct insn_args args; + +	args.entry = entry; +	args.type = type; + +	stop_machine(__sm_arch_jump_label_transform, &args, NULL); +} + +void arch_jump_label_transform_static(struct jump_entry *entry, +				      enum jump_label_type type) +{ +	__jump_label_transform(entry, type);  }  #endif  |