On Wed, 13 Feb 2008 10:23:42 -0600
Corey Minyard <minyard@acm.org> wrote:

quoted text
> From: Corey Minyard <cminyard@mvista.com>
> 
> The "run_to_completion" mode was somewhat broken.  Locks need to be
> avoided in run_to_completion mode, and it shouldn't be used by normal
> users, just internally for panic situations.
> 
> This patch removes locks in run_to_completion mode and removes the
> user call for setting the mode.  The only user was the poweroff
> code, but it was easily converted to use the polling interface.
> 
> +	/*
> +	 * Spin until our message is done.
> +	 */
> +	while (atomic_read(&dummy_count) > 0) {
> +		ipmi_poll_interface(user);
> +		barrier();
> +	}

we'd normally use cpu_relax() here.


--
unsubscribe notice
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/