Re: [PATCH -next 11/27] tty: Don't release tty locks for wait queue sanity check

From: One Thousand Gnomes
Date: Thu Oct 23 2014 - 07:31:28 EST


> (and -- don't laugh -- explore why printk disables interrupts and prevents
> cpu migration while calling the console drivers. Seems ok to me...)

It disables interrupts so that the chance of the oops getting out is
maximised, it locks down some of the other bits to try and stop
interleaved oopses producing garbage when say a 16 way server goes pop and
all the cpus oops at once.

Not sure about the migration 8)

Alan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/