Re: Alt-arrow console switch sometimes dropped

Rusty Russell
2004-01-08T00:23:44Z

In message <20040103133746.GA516@elf.ucw.cz> you write:
> Hi!
>
> Alt-arrow console switch is routinely dropped under high load. This
> patch fixes it: alt-arrow has to start from console _we want to switch
> to_, if switch is already pending. Please apply,
> Pavel

Sure, but a comment would be nice:

/* Currently switching? Queue this next switch relative to that. */

Thanks,
Trivial Rusty.

> Index: linux.new/drivers/char/keyboard.c
> ===================================================================
> --- linux.new.orig/drivers/char/keyboard.c 2003-12-25 13:28:51.000000000 +0100
> +++ linux.new/drivers/char/keyboard.c 2003-12-25 13:29:08.000000000 +0100
> @@ -507,8 +528,12 @@
> static void fn_inc_console(struct vc_data *vc, struct pt_regs *regs)
> {
> int i;
> + int cur = fg_console;
>
> - for (i = fg_console+1; i != fg_console; i++) {
> + if (want_console != -1)
> + cur = want_console;
> +
> + for (i = cur+1; i != cur; i++) {
> if (i == MAX_NR_CONSOLES)
> i = 0;
> if (vc_cons_allocated(i))
>
--
Anyone who quotes me in their sig is an idiot. -- Rusty Russell.