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SubjectRe: [PATCH 2.6.27-rc3 19/28] mdb: adding notify_die handler for keyboard debugger entry
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jmerkey@wolfmountaingroup.com writes:

> +#if defined(CONFIG_MDB) || defined(CONFIG_MDB_MODULE)
> + if (down && !rep && keycode == KEY_PAUSE)
> + {
> + if (notify_die(DIE_KERNELDEBUG, NULL, get_irq_regs(),
> + 0, -1, SIGINT) == NOTIFY_STOP)
> + return;
> + }
> +#endif
> +
> #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */
> if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) {
> if (!sysrq_down) {

A nicer alternative to adding an hook here would be to use
register_sysrq_key() to register a sysrq key that triggers
the debugger. That function is also already exported.

-Andi


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