From: Murali Karicheri <m-karicheri2@ti.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: <akpm@linux-foundation.org>, <linaro-kernel@lists.linaro.org>,
<linux-kernel@vger.kernel.org>,
open list: TI NETCP ETHERNET DRIVER <netdev@vger.kernel.org>,
Wingman Kwok <w-kwok2@ti.com>, ;
Subject: Re: [PATCH 08/15] drivers: net: Drop unlikely before IS_ERR(_OR_NULL)
Date: Mon, 3 Aug 2015 11:52:59 -0400 [thread overview]
Message-ID: <55BF8E5B.5050408@ti.com> (raw)
In-Reply-To: <20150731162018.GD899@linux>
On 07/31/2015 12:20 PM, Viresh Kumar wrote:
> On 31-07-15, 11:04, Murali Karicheri wrote:
>> On 07/31/2015 04:38 AM, Viresh Kumar wrote:
>>> IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there
>>> is no need to do that again from its callers. Drop it.
>>>
>>
>> IS_ERR_OR_NULL() is defined as
>>
>> static inline bool __must_check IS_ERR_OR_NULL(__force const void *ptr)
>> {
>> return !ptr || IS_ERR_VALUE((unsigned long)ptr);
>> }
>>
>> So the unlikely() applies only to second part. Wouldn't that be a
>> problem for optimization?
>
> This is what the first patch of the series does:
>
> http://permalink.gmane.org/gmane.linux.kernel/2009151
>
Assuming the above change is merged, this patch looks good.
Acked-by: Murali Karicheri <m-karicheri2@ti.com>
--
Murali Karicheri
Linux Kernel, Keystone
next prev parent reply other threads:[~2015-08-03 15:53 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-31 8:38 [PATCH 00/15] trivial: " Viresh Kumar
2015-07-31 8:38 ` [PATCH 01/15] err.h: add (missing) unlikely() to IS_ERR_OR_NULL() Viresh Kumar
2015-07-31 8:38 ` [PATCH 02/15] PM / OPP: Drop unlikely before IS_ERR(_OR_NULL) Viresh Kumar
2015-07-31 8:38 ` [PATCH 03/15] drivers: devfreq: " Viresh Kumar
2015-07-31 8:38 ` [PATCH 04/15] drivers: gpu: " Viresh Kumar
2015-07-31 15:53 ` Sinclair Yeh
2015-08-03 8:01 ` Daniel Vetter
2015-07-31 8:38 ` [PATCH 05/15] drivers: input: " Viresh Kumar
2015-07-31 16:58 ` Dmitry Torokhov
2015-08-01 11:22 ` Viresh Kumar
2015-08-01 11:44 ` Pali Rohár
2015-08-02 15:43 ` Pavel Machek
2015-08-02 15:59 ` Pali Rohár
2015-07-31 8:38 ` [PATCH 06/15] drivers: md: " Viresh Kumar
2015-07-31 8:38 ` [PATCH 07/15] drivers: misc: " Viresh Kumar
2015-07-31 8:38 ` [PATCH 08/15] drivers: net: " Viresh Kumar
2015-07-31 15:04 ` Murali Karicheri
2015-07-31 15:39 ` David Laight
2015-07-31 16:20 ` Viresh Kumar
2015-08-03 15:52 ` Murali Karicheri [this message]
2015-07-31 8:38 ` [PATCH 09/15] drivers: rtc: " Viresh Kumar
2015-07-31 9:31 ` [PATCH] drivers: rtc: fix ptr_ret.cocci warnings Viresh Kumar
2015-08-11 15:54 ` Alexandre Belloni
2015-07-31 10:53 ` [PATCH 9/15 V2] drivers: rtc: Drop (un)likely before IS_ERR(_OR_NULL) Viresh Kumar
2015-08-03 4:32 ` Hans Ulli Kroll
2015-08-11 15:54 ` Alexandre Belloni
2015-07-31 8:38 ` [PATCH 10/15] drivers: staging: Drop unlikely " Viresh Kumar
2015-07-31 8:38 ` [PATCH 11/15] drivers: target: " Viresh Kumar
2015-08-03 5:45 ` Nicholas A. Bellinger
2015-07-31 8:38 ` [PATCH 12/15] fs: " Viresh Kumar
2015-07-31 8:38 ` [PATCH 13/15] blk-cgroup: " Viresh Kumar
2015-07-31 11:59 ` Tejun Heo
2015-07-31 8:38 ` [PATCH 14/15] mm: " Viresh Kumar
2015-07-31 8:56 ` Kirill A. Shutemov
2015-07-31 9:32 ` yalin wang
2015-07-31 9:34 ` Viresh Kumar
2015-07-31 10:28 ` Joe Perches
2015-07-31 11:06 ` Viresh Kumar
2015-07-31 18:00 ` Joe Perches
2015-08-01 11:18 ` Viresh Kumar
2015-07-31 8:38 ` [PATCH 15/15] net: " Viresh Kumar
2015-07-31 9:20 ` [PATCH 12/15] fs: " David Howells
2015-07-31 9:41 ` [PATCH 00/15] trivial: " Vlastimil Babka
2015-07-31 9:49 ` Viresh Kumar
2015-07-31 10:23 ` Kirill A. Shutemov
2015-07-31 11:02 ` [PATCH] staging: lustre: drop redundant check Viresh Kumar
2015-07-31 11:04 ` [PATCH 00/15] trivial: Drop unlikely before IS_ERR(_OR_NULL) Viresh Kumar
2015-08-03 21:38 ` Steven Rostedt
2015-08-04 2:19 ` Viresh Kumar
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