[PATCH 3/3] powerpc/kprobes: Check return value of patch_instruction()

[Naveen N. Rao]

Steven Rostedt wrote:
> On Sat, 25 Apr 2020 10:11:56 +0000
> Christophe Leroy <christophe.leroy at c-s.fr> wrote:
>> 
>> Sure it's be more explicit, but then more lines also. 3 lines for only 
>> one really usefull.
>> 
>> With goto, I would look like:
>> 
>> diff --git a/arch/powerpc/kernel/optprobes.c 
>> b/arch/powerpc/kernel/optprobes.c
>> index 046485bb0a52..938208f824da 100644
>> --- a/arch/powerpc/kernel/optprobes.c
>> +++ b/arch/powerpc/kernel/optprobes.c
>> @@ -139,14 +139,14 @@ void arch_remove_optimized_kprobe(struct 
>> optimized_kprobe *op)
>>   	}
>>   }
>> 
>> -#define PATCH_INSN(addr, instr)						     \
>> +#define PATCH_INSN(addr, instr, label)						     \
> 
> With the explicit label as a parameter, makes it more evident that it
> will do something (like jump) with that label.

I think I will also rename the macro to PATCH_INSN_OR_GOTO() to make it 
super evident :)

> 
> I like this solution the best!

Thanks for the feedback.


- Naveen