svn commit: r273601 - head/lib/libc/gen

Andrey Chernov ache at freebsd.org
Sat Oct 25 03:50:04 UTC 2014


On 25.10.2014 6:21, Andrey Chernov wrote:
> On 24.10.2014 23:55, John Baldwin wrote:
>> Author: jhb
>> Date: Fri Oct 24 19:55:49 2014
>> New Revision: 273601
>> URL: https://svnweb.freebsd.org/changeset/base/273601
>>
>> Log:
>>   Don't reference sem(4) from the POSIX semaphore pages.  POSIX semaphores
>>   were reimplemented using umtx in FreeBSD 9 and no longer use sem(4).
> 
> sem kernel module referenced in sem(4) uses the same uipc_sem.c file as
> kernel's P1003_1B_SEMAPHORES option, so they both use the same code and
> better be cross-linked since sem(4) explains how to turn it on.
> 

>From the first glance I can't determine, is libc implementation better
than kernel one or not. BTW, firefox port still recommends sem_load="YES"

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