Hi,
I found this construction in the kernel:
static struct tty_driver *my_ttydriver;
static struct tty_struct *my_tty[PORTS + 1];
static struct termios *my_termios[PORTS + 1];
static struct termios *my_termios_locked[PORTS + 1];
...(alloc+set_op+...)
my_ttydriver->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_DYNAMIC_DEV;
my_ttydriver->ttys = my_tty;
my_ttydriver->termios = my_termios;
my_ttydriver->termios_locked = my_termios_locked;
tty_register_driver(my_ttydriver);
The association is completely useless due to
if (p) {
driver->ttys = (struct tty_struct **)p;
driver->termios = (struct termios **)(p + driver->num);
driver->termios_locked = (struct termios **)(p + driver->num * 2);
} else {
driver->ttys = NULL;
driver->termios = NULL;
driver->termios_locked = NULL;
}
in tty_register_driver, isn't it? Can we save some memory?
thanks,
--
http://www.fi.muni.cz/~xslaby/ Jiri Slaby
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8 22A0 32CC 55C3 39D4 7A7E
-
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/
[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]
