[ovs-dev] [PATCH 2/3] datapath: Mega flow implementation
Rajahalme, Jarno (NSN - FI/Espoo)
jarno.rajahalme at nsn.com
Fri Jun 7 20:28:20 UTC 2013
It is in lib/util.h:
lib/util.h:#define DIV_ROUND_UP(X, Y) (((X) + ((Y) - 1)) / (Y))
lib/util.h:#define ROUND_UP(X, Y) (DIV_ROUND_UP(X, Y) * (Y))
On Jun 7, 2013, at 17:39 , ext Andy Zhou 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.
/* 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.rajahalme at nsn.com<mailto:jarno.rajahalme at 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.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the dev