netdev - Re: [PATCH] tg3: Convert u32 flag,flg2,flg3 uses to bitmap

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: <1303406280.8857.13.camel@HP1>
Date:	Thu, 21 Apr 2011 10:18:00 -0700
From:	"Michael Chan" <mchan@...adcom.com>
To:	"Joe Perches" <joe@...ches.com>
cc:	"Matthew Carlson" <mcarlson@...adcom.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tg3: Convert u32 flag,flg2,flg3 uses to bitmap


On Wed, 2011-04-20 at 23:39 -0700, Joe Perches wrote:
> @@ -4622,7 +4611,7 @@ static void tg3_tx_recover(struct tg3 *tp)
>                     "and include system chipset information.\n");
> 
>         spin_lock(&tp->lock);
> -       tp->tg3_flags |= TG3_FLAG_TX_RECOVERY_PENDING;
> +       tg3_flag_set(tp, TX_RECOVERY_PENDING);
>         spin_unlock(&tp->lock);
>  }
> 

By using set_bit() now, we can eliminate the spin_lock() here.  This
flag is checked much later when tg3_reset_task() is scheduled to run in
workqueue, so no memory barrier is needed either.

Thanks.


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html