Messages in this thread | | | Subject | Re: [PATCH 1/2] kernel.h: Add DIV_ROUND_UP_ULL usage | From | Joe Perches <> | Date | Tue, 26 Jul 2011 00:53:41 -0700 |
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On Tue, 2011-07-26 at 07:10 +0000, Nicholas A. Bellinger wrote: > Add new DIV_ROUND_UP_ULL macro usage for 32-bit architectures requiring > unsigned long long division of sectors * dev_max_sectors. [] > diff --git a/include/linux/kernel.h b/include/linux/kernel.h [] > +#define DIV_ROUND_UP_ULL(ll,d) \ > + ({ unsigned long long _tmp = (ll)+(d)-1; do_div(_tmp, d); _tmp; })
Maybe use uint64_t and a temporary for d?
#define DIV_ROUND_UP_ULL(ll, d) \ ({ \ typeof(d) _d = d; \ uint64_t _tmp = (uint64_t)(ll) + _d - 1; \ do_div(_tmp, _d); \ _tmp; \ })
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