On Sat, May 05, 2007 at 09:32:25AM +0200, Jirka Pirko wrote: > > > Greg KH napsal(a): > > On Fri, May 04, 2007 at 09:16:22AM +0200, Jirka Pirko wrote: > > > >> Hi > >> > >> I'm writing pseudo chardev and i need to pass some structure to > >> userspace. It includes strings and pointers to other structures. I need > >> to allocate userspace memory chunks and pass pointers to in into > >> userspace process where it can be used. Is there any chance to do it? > >> > > > > No, have userspace allocate the memory, pass it to the kernel, fill it > > up, and then pass it back. Much easier that way. > > > ok - but it will cause more syscalls which i wanted to prevent :/ syscalls on Linux a fast, very fast, in fact, the fastest of any OS right now. So don't worry about speed issues here. thanks, greg k-h -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
