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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-06-07 23:24:07 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-06-07 23:24:07 -0700 |
| commit | a292241cccb7e20e8b997a9a44177e7c98141859 (patch) | |
| tree | a0b0bb95e7dce3233a2d8b203f9e326cdec7a00e /lib/clz_ctz.c | |
| parent | d49cb7aeebb974713f9f7ab2991352d3050b095b (diff) | |
| parent | 68807a0c2015cb40df4869e16651f0ce5cc14d52 (diff) | |
Merge branch 'next' into for-linus
Prepare input updates for 3.16.
Diffstat (limited to 'lib/clz_ctz.c')
| -rw-r--r-- | lib/clz_ctz.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/clz_ctz.c b/lib/clz_ctz.c index a8f8379eb49..2e11e48446a 100644 --- a/lib/clz_ctz.c +++ b/lib/clz_ctz.c @@ -6,6 +6,9 @@ * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. + * The functions in this file aren't called directly, but are required by + * GCC builtins such as __builtin_ctz, and therefore they can't be removed + * despite appearing unreferenced in kernel source. * * __c[lt]z[sd]i2 can be overridden by linking arch-specific versions. */ @@ -13,18 +16,22 @@ #include <linux/export.h> #include <linux/kernel.h> +int __weak __ctzsi2(int val); int __weak __ctzsi2(int val) { return __ffs(val); } EXPORT_SYMBOL(__ctzsi2); +int __weak __clzsi2(int val); int __weak __clzsi2(int val) { return 32 - fls(val); } EXPORT_SYMBOL(__clzsi2); +int __weak __clzdi2(long val); +int __weak __ctzdi2(long val); #if BITS_PER_LONG == 32 int __weak __clzdi2(long val) |