svn commit: r214409 - head/sys/kern

Garrett Cooper gcooper at FreeBSD.org
Thu Oct 28 18:25:58 UTC 2010


On Thu, Oct 28, 2010 at 2:54 AM, David Xu <davidxu at freebsd.org> wrote:
> Garrett Cooper wrote:
>>
>> On Wed, Oct 27, 2010 at 9:22 AM, Andriy Gapon <avg at freebsd.org> wrote:
>>>
>>> [patch attachment was lost]
>>
>> Ugh... Mailman hates me I guess :(...
>>
>>> on 27/10/2010 19:07 Garrett Cooper said the following:
>>>>
>>>>    How about this patch? I implemented this as a readonly tunable and
>>>
>>> I don't think that it's correct to call it a tunable or use
>>> CTLFLAG_RDTUN.
>>> As I understand it is a read-only sysctl.
>>
>> Converted to CTLFLAG_RD.
>>
>>>> sysconf tunable, because (AFAIK) the value that is being tested
>>>> shouldn't change during runtime after the system has been booted up,
>>>> and figuring that the value wasn't going to change it was better to
>>>> lose 4/8 bytes on the kernel stack instead of having to recompute the
>>>> value every time in a function call, with the associated lost heap /
>>>> stack memory in the process, as the assumption is that this libcall
>>>> was going to be called frequently by some programs.
>
> The patch looks fine to me. ;-)

If no one opposes the change, could you please commit the patch for me David?
Thanks!
-Garrett


More information about the svn-src-all mailing list