linux-kernel - Re: [PATCH v2 -mm 8/9] netconsole: Support multiple logging targets

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <e9e943910707100323o35cb0316i5d3f21584ad8e4ae@mail.gmail.com>
Date:	Tue, 10 Jul 2007 11:23:15 +0100
From:	"Duane Griffin" <duaneg@...da.com>
To:	"Satyam Sharma" <ssatyam@....iitk.ac.in>
Cc:	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Matt Mackall" <mpm@...enic.com>,
	"Keiichi Kii" <k-keiichi@...jp.nec.com>,
	Netdev <netdev@...r.kernel.org>,
	"Joel Becker" <joel.becker@...cle.com>,
	"Stephen Hemminger" <shemminger@...ux-foundation.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"David Miller" <davem@...emloft.net>
Subject: Re: [PATCH v2 -mm 8/9] netconsole: Support multiple logging targets

On 10/07/07, Satyam Sharma <ssatyam@....iitk.ac.in> wrote:
> +       /* Avoid taking lock and disabling interrupts unnecessarily */
> +       if (unlikely(list_empty(&target_list)))
> +               return;

Is the unlikely a good idea here? Not having any targets may be
unusual but it isn't ridiculous. It might even be a sensible default
for distros. My (very limited) understanding of unlikely is that it
could impose a very large penalty in that case and would make a very
marginal difference at best in the common case.

Cheers,
Duane.

-- 
"I never could learn to drink that blood and call it wine" - Bob Dylan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/