Hello Masami, Thank you for your review!
My comments are below. On 01/21/2013 06:49 AM, Masami Hiramatsu wrote: > (2013/01/10 8:09), Sasha Levin wrote: >> @@ -278,7 +278,7 @@ static int __kprobes can_optimize(unsigned long paddr) >> } >> >> /* Check optimized_kprobe can actually be optimized. */ >> -int __kprobes arch_check_optimized_kprobe(struct optimized_kprobe *op) >> +int __kprobes arch_check_optimized_kprobe(const struct optimized_kprobe *op) >> { >> int i; >> struct kprobe *p; > > This can be change optimized_kprobe inside, e.g. change flags. > IMHO, I don't like to change this interface. [snip] >> -static __kprobes int check_kprobe_address_safe(struct kprobe *p, >> +static __kprobes int check_kprobe_address_safe(const struct kprobe *p, >> struct module **probed_mod) >> { >> int ret = 0; >> > > No, p is NOT constant in this function. This changes p->flags. > > --- > #ifdef KPROBES_CAN_USE_FTRACE > /* Given address is not on the instruction boundary */ > if ((unsigned long)p->addr != ftrace_addr) > return -EILSEQ; > p->flags |= KPROBE_FLAG_FTRACE; > #else /* !KPROBES_CAN_USE_FTRACE */ As to arch_check_optimized_kprobe() and check_kprobe_address_safe(), this is simply way too confusing. It doesn't make sense that a function named check_[...]() would modify any of it's parameters. For example, that entire block within KPROBES_CAN_USE_FTRACE should be split out and go into update_kprobe_for_ftrace() or something similar. If that makes sense, I can send a patch to split out all the parts that modify anything in those two functions out of them. Thanks, Sasha -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/