On Mon, 4 Nov 2013 17:09:14 +0100, Oleg Nesterov wrote: > See my replies to 0/13. Lets assume that you agree that get_user_vaddr() > doesn't need tu->inode.
Okay. > > On 10/29, Namhyung Kim wrote: >> >> This argument is for passing private data structure to each fetch >> function and will be used by uprobes. > > In this case, why do we need this "void *priv"? It actually becomes > "bool need_addr_translation". Right. I added it because the deref method is used for both of kprobes and uprobes and it only needed for uprobes. And I thought if we need something for kprobes later, it can be reused so make it general. > > Can't we avoid it? Can't we just add FETCH_MTD_memory_notranslate ? > kprobes should use the same methods for FETCH_MTD_memory*, uprobes > should obviously adjust the addr in FETCH_MTD_memory. > > Then (afaics) we need a single change in parse_probe_arg(), > > - dprm->fetch = t->fetch[FETCH_MTD_memory]; > + dprm->fetch = t->fetch[FETCH_MTD_memory_notranslate]; > > Yes, this will blow *probes_fetch_type_table[], but looks simpler. Looks good to me too, thanks! :) > > And. This way it would be simple to teach parse_probe_arg('@') to use > _notranslate, say, "@=addr" or whatever. Yeah, it'll be useful at least for fetching data in anon pages. Thanks, Namhyung -- 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/