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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-08-12 07:33:23 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-08-12 07:33:23 +0200
commit77e38c19f373c077712e60cd190ca9cba13b7177 (patch)
treec7a743735cffdcaee26ca559888196d229c4ec1e /include/asm-generic
parentMerge tag 'fpga-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mdf... (diff)
parentLinux 5.3-rc4 (diff)
downloadlinux-77e38c19f373c077712e60cd190ca9cba13b7177.tar.gz
linux-77e38c19f373c077712e60cd190ca9cba13b7177.zip
Merge 5.3-rc4 into char-misc-next
We need the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/getorder.h50
1 files changed, 20 insertions, 30 deletions
diff --git a/include/asm-generic/getorder.h b/include/asm-generic/getorder.h
index c64bea7a52be..e9f20b813a69 100644
--- a/include/asm-generic/getorder.h
+++ b/include/asm-generic/getorder.h
@@ -7,24 +7,6 @@
#include <linux/compiler.h>
#include <linux/log2.h>
-/*
- * Runtime evaluation of get_order()
- */
-static inline __attribute_const__
-int __get_order(unsigned long size)
-{
- int order;
-
- size--;
- size >>= PAGE_SHIFT;
-#if BITS_PER_LONG == 32
- order = fls(size);
-#else
- order = fls64(size);
-#endif
- return order;
-}
-
/**
* get_order - Determine the allocation order of a memory size
* @size: The size for which to get the order
@@ -43,19 +25,27 @@ int __get_order(unsigned long size)
* to hold an object of the specified size.
*
* The result is undefined if the size is 0.
- *
- * This function may be used to initialise variables with compile time
- * evaluations of constants.
*/
-#define get_order(n) \
-( \
- __builtin_constant_p(n) ? ( \
- ((n) == 0UL) ? BITS_PER_LONG - PAGE_SHIFT : \
- (((n) < (1UL << PAGE_SHIFT)) ? 0 : \
- ilog2((n) - 1) - PAGE_SHIFT + 1) \
- ) : \
- __get_order(n) \
-)
+static inline __attribute_const__ int get_order(unsigned long size)
+{
+ if (__builtin_constant_p(size)) {
+ if (!size)
+ return BITS_PER_LONG - PAGE_SHIFT;
+
+ if (size < (1UL << PAGE_SHIFT))
+ return 0;
+
+ return ilog2((size) - 1) - PAGE_SHIFT + 1;
+ }
+
+ size--;
+ size >>= PAGE_SHIFT;
+#if BITS_PER_LONG == 32
+ return fls(size);
+#else
+ return fls64(size);
+#endif
+}
#endif /* __ASSEMBLY__ */