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| author | Jiri Kosina <jkosina@suse.cz> | 2014-06-04 13:09:01 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2014-06-04 13:09:01 +0200 |
| commit | af5666e0f76023d9c296016024297903a4c83108 (patch) | |
| tree | 9397e7a41dd3eb0c0e14a6407a8e8f12abed4fc5 /lib/clz_ctz.c | |
| parent | 1b15d2e5b8077670b1e6a33250a0d9577efff4a5 (diff) | |
| parent | 368c96640d10a145da5f258f2d2833668d4f3629 (diff) | |
Merge branches 'for-3.15/upstream-fixes' and 'for-3.16/upstream' into for-linus
Conflicts:
drivers/hid/hid-sensor-hub.c
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 a8f8379eb49f..2e11e48446ab 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) |