On Mon, Jan 30, 2006 at 12:23:14PM +0100, Aritz Bastida wrote:
> Thank you Antonio and Greg
> But I still have one question pending:
>
> > >
> > > 3.- Actually the most difficult config I must do is to pass three
> > > values from userspace to my module. Specifically two integers and a
> > > long (it's an offset to a memory zone I've previously defined)
> > >
> > > struct meminfo {
> > > unsigned int id; /* segment identifier */
> > > unsigned int size; /* size of the memory area */
> > > unsigned long offset; /* offset to the information */
> > > };
> > >
> > > How would you pass this information in sysfs? Three values in the same
> > > file? Note that using three different files wouldn't be atomic, and I
> > > need atomicity.
> > >
>
> I guess I could pass three values on the same file, like this:
> $ echo "5 1000 500" > meminfo
>
> I know that breaks the sysfs golden-rule, but how can I pass those
> values _atomically_ then? Having three different files wouldn't be
> atomic...
That's what configfs was created for. I suggest using that for things
like this, as sysfs is not intended for it.
thanks,
greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
- References:
- Right way to configure a driver? (sysfs, ioctl, proc, configfs,....)
- Re: Right way to configure a driver? (sysfs, ioctl, proc, configfs,....)
- Re: Right way to configure a driver? (sysfs, ioctl, proc, configfs,....)
- Re: Right way to configure a driver? (sysfs, ioctl, proc, configfs,....)
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
