lkml.org 
[lkml]   [2005]   [May]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch] improve SMP reschedule and idle routines
Nick Piggin wrote:
>
> void default_idle(void)
> {
> + local_irq_enable();
> +

Stupid question. Why is this sti() needed?

Interrupts are enabled in start_secondary() before cpu_idle()
call, and they can't be disabled after return from schedule().

The same question applies to poll_idle/mwait_idle.

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

\
 
 \ /
  Last update: 2005-05-16 15:48    [W:0.043 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site