From: Dan Carpenter <dan.carpenter@oracle.com>
To: Christoph Jaeger <email@christophjaeger.info>
Cc: shigekatsu.tateno@atmel.com, gregkh@linuxfoundation.org,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 07/10] staging: ozwpan: Use slab cache for oz_urb_link allocation
Date: Tue, 5 Aug 2014 14:18:29 +0300 [thread overview]
Message-ID: <20140805111829.GU4856@mwanda> (raw)
In-Reply-To: <1407156896-3246-8-git-send-email-email@christophjaeger.info>
On Mon, Aug 04, 2014 at 02:54:53PM +0200, Christoph Jaeger wrote:
> @@ -2341,6 +2289,11 @@ int oz_hcd_init(void)
>
> if (usb_disabled())
> return -ENODEV;
> +
> + oz_urb_link_cache = KMEM_CACHE(oz_urb_link, 0);
> + if (unlikely(!oz_urb_link_cache))
> + return -ENOMEM;
Don't put unlikely() calls in driver code. It just makes it messy for
no reason. "Oooo! I can modprobe/rmmod this driver 1000000 times in a
row and it speeds it up .0003 seconds because I added an unlikely tag!"
regards,
dan carpenter
next prev parent reply other threads:[~2014-08-05 11:18 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-04 12:54 [PATCH 00/10] staging: Clean up ozwpan driver Christoph Jaeger
2014-08-04 12:54 ` [PATCH 01/10] staging: ozwpan: Add module parameter description Christoph Jaeger
2014-08-04 12:54 ` [PATCH 02/10] staging: ozwpan: Fix typo in typedef Christoph Jaeger
2014-08-10 4:42 ` Greg KH
2014-08-04 12:54 ` [PATCH 03/10] staging: ozwpan: Remove unused OZ_MAX_TIMER_POOL_SIZE Christoph Jaeger
2014-08-04 12:54 ` [PATCH 04/10] staging: ozwpan: Remove redundant initialization Christoph Jaeger
2014-08-04 12:54 ` [PATCH 05/10] staging: ozwpan: Remove dead code Christoph Jaeger
2014-08-04 12:54 ` [PATCH 06/10] staging: ozwpan: Simplify app interface Christoph Jaeger
2014-08-05 11:13 ` Dan Carpenter
2014-08-04 12:54 ` [PATCH 07/10] staging: ozwpan: Use slab cache for oz_urb_link allocation Christoph Jaeger
2014-08-05 11:18 ` Dan Carpenter [this message]
2014-08-08 5:59 ` [PATCH 07/10 v2] " Christoph Jaeger
2014-08-04 12:54 ` [PATCH 08/10] staging: ozwpan: Use slab cache for oz_elt_info allocation Christoph Jaeger
2014-08-08 6:00 ` [PATCH 08/10 v2] " Christoph Jaeger
2014-08-04 12:54 ` [PATCH 09/10] staging: ozwpan: Use slab cache for oz_tx_frame allocation Christoph Jaeger
2014-08-08 6:01 ` [PATCH 09/10 v2] " Christoph Jaeger
2014-08-04 12:54 ` [PATCH 10/10] staging: ozwpan: Use list helpers Christoph Jaeger
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