lkml.org 
[lkml]   [2014]   [Oct]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] um: Remove unused bp stack-frame pointer
On 2014-10-18 17:40, Richard Weinberger wrote:
> Am 18.10.2014 um 17:24 schrieb Manfred Schlaegl:
>> On 2014-10-18 17:19, Richard Weinberger wrote:
>>> Am 18.10.2014 um 17:12 schrieb Manfred Schlaegl:
>>>> On 2014-10-18 16:42, Richard Weinberger wrote:
>>>>> Am 18.10.2014 um 16:23 schrieb Manfred Schlaegl:
>>>>>> The pointer to bp stack-frame is no longer used. Removed it.
>>>>>
>>>>> Good catch!
>>>> Thank you.
>>>>
>>>>>
>>>>>> This also removes a corresponding compiler-warning.
>>>>>
>>>>> Which warning exactly?
>>>>
>>>> On "normal" (defconfig) builds the warning does not show up because CONFIG_FRAME_POINTER is set.
>>>> I've found the unused bp because CONFIG_FRAME_POINTER was not set in my configuration.
>>>>
>>>> CC arch/um/kernel/sysrq.o
>>>> arch/um/kernel/sysrq.c: In function ‘show_stack’:
>>>> arch/um/kernel/sysrq.c:32:29: warning: unused variable ‘bp’ [-Wunused-variable]
>>>
>>> Looks like my gcc need's an upgrade. :D
>>>
>>> Thanks,
>>> //richard
>>>
>>
>> I'm using gcc version 4.7.2 (Debian 4.7.2-5). -> not THAT new ;-)
>
> With a cup of coffee applied I managed it to read your mail correctly.
> The warning triggers only with CONFIG_FRAME_POINTER=n. Now it makes sense.

Misunderstanding solved! Miracle cure caffeine ;-)

greetings
manfred

--
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/

\
 
 \ /
  Last update: 2014-10-19 20:01    [W:0.041 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site