mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-29 04:09:39 +00:00
Code Issues Releases Wiki Activity

arch: tile: include: asm: add cmpxchg64() definition

Browse source 
Need add cmpxchg64(), or will cause compiling issue.

Need define it as cmpxchg() only for 64-bit operation, since cmpxchg()
can support 8 bytes.

The related error (with allmodconfig):

  drivers/block/blockconsole.c: In function ‘bcon_advance_console_bytes’:
  drivers/block/blockconsole.c:164:2: error: implicit declaration of function ‘cmpxchg64’ [-Werror=implicit-function-declaration]

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chen Gang 2013-07-01 10:21:51 +08:00 committed by Chris Metcalf
parent ad81f0545e
commit cf3a13d790
1 changed files with 6 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
arch/tile/include/asm/cmpxchg.h
View file

@ -68,6 +68,12 @@ extern unsigned long __cmpxchg_called_with_bad_pointer(void);
#define tas(ptr) (xchg((ptr), 1))
#define cmpxchg64(ptr, o, n) \
({ \
BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
cmpxchg((ptr), (o), (n)); \
})
#endif /* __ASSEMBLY__ */
#endif /* _ASM_TILE_CMPXCHG_H */