tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: a897436e0e233e84b664bb7f33c4e0d4d3e3bdad
commit: 8b0c0ea86849b55091281d146d62bbd9cda87556 [9613/10050] mm-cma-add-functions-to-get-region-pages-counters-fix-2
mm/cma_debug.c:45 cma_used_get() warn: should 'used << cma->order_per_bit' be a 64 bit type?
mm/cma_debug.c:67 cma_maxchunk_get() warn: should 'maxchunk << cma->order_per_bit' be a 64 bit type?
git remote add next git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git remote update next
git checkout 8b0c0ea86849b55091281d146d62bbd9cda87556
vim +45 mm/cma_debug.c
8b0c0ea8 Stefan Strogin 2015-04-08 39 unsigned long used;
c8e6dfcb Dmitry Safonov 2015-04-08 40
8b0c0ea8 Stefan Strogin 2015-04-08 41 mutex_lock(&cma->lock);
8b0c0ea8 Stefan Strogin 2015-04-08 42 /* pages counter is smaller than sizeof(int) */
8b0c0ea8 Stefan Strogin 2015-04-08 43 used = bitmap_weight(cma->bitmap, (int)cma->count);
8b0c0ea8 Stefan Strogin 2015-04-08 44 mutex_unlock(&cma->lock);
8b0c0ea8 Stefan Strogin 2015-04-08 @45 *val = used << cma->order_per_bit;
c8e6dfcb Dmitry Safonov 2015-04-08 46
c8e6dfcb Dmitry Safonov 2015-04-08 47 return 0;
c8e6dfcb Dmitry Safonov 2015-04-08 48 }
c8e6dfcb Dmitry Safonov 2015-04-08 49
c8e6dfcb Dmitry Safonov 2015-04-08 50 DEFINE_SIMPLE_ATTRIBUTE(cma_used_fops, cma_used_get, NULL, "%llu\n");
c8e6dfcb Dmitry Safonov 2015-04-08 51
c8e6dfcb Dmitry Safonov 2015-04-08 52 static int cma_maxchunk_get(void *data, u64 *val)
c8e6dfcb Dmitry Safonov 2015-04-08 53 {
c8e6dfcb Dmitry Safonov 2015-04-08 54 struct cma *cma = data;
8b0c0ea8 Stefan Strogin 2015-04-08 55 unsigned long maxchunk = 0;
8b0c0ea8 Stefan Strogin 2015-04-08 56 unsigned long start, end = 0;
c8e6dfcb Dmitry Safonov 2015-04-08 57
8b0c0ea8 Stefan Strogin 2015-04-08 58 mutex_lock(&cma->lock);
8b0c0ea8 Stefan Strogin 2015-04-08 59 for (;;) {
8b0c0ea8 Stefan Strogin 2015-04-08 60 start = find_next_zero_bit(cma->bitmap, cma->count, end);
8b0c0ea8 Stefan Strogin 2015-04-08 61 if (start >= cma->count)
8b0c0ea8 Stefan Strogin 2015-04-08 62 break;
8b0c0ea8 Stefan Strogin 2015-04-08 63 end = find_next_bit(cma->bitmap, cma->count, start);
8b0c0ea8 Stefan Strogin 2015-04-08 64 maxchunk = max(end - start, maxchunk);
8b0c0ea8 Stefan Strogin 2015-04-08 65 }
8b0c0ea8 Stefan Strogin 2015-04-08 66 mutex_unlock(&cma->lock);
8b0c0ea8 Stefan Strogin 2015-04-08 @67 *val = maxchunk << cma->order_per_bit;
c8e6dfcb Dmitry Safonov 2015-04-08 68
c8e6dfcb Dmitry Safonov 2015-04-08 69 return 0;
c8e6dfcb Dmitry Safonov 2015-04-08 70 }
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