It looks to me like it is available all the way back to 2.6.18, which
is the oldest kernel we care about.
On Fri, Jun 7, 2013 at 7:39 AM, Andy Zhou <az...@nicira.com> wrote:
> Thanks for the suggestion.
>
> The kernel source I am looking at: 3.9.0-rc8, does not a accessible
> definition of ROUND_UP, but roundup(x,y) is, and fits the bill. I am
> thinking of using it instead, unless it breaks on some older kernel version
> that we care about.
>
> From kernel.h:
>
> /* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */
> #define roundup(x, y) ( \
> { \
> const typeof(y) __y = y; \
> (((x) + (__y - 1)) / __y) * __y; \
> }
>
>
> On Fri, Jun 7, 2013 at 7:19 AM, Rajahalme, Jarno (NSN - FI/Espoo)
> <jarno.rajaha...@nsn.com> wrote:
>>
>>
>> On Jun 7, 2013, at 13:35 , ext Andy Zhou wrote:
>>
>>> Is this the same as DIV_ROUND_UP?
>>
>> I did not use it because DIV_ROUND_UP gives the roundup of u32, I needed
>> the roundup in bytes. However, I could rewrite this function using
>> DIV_ROUND_UP.
>>
>>
>> There is ROUND_UP doing that already.
>
>
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