diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-10-01 07:30:38 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-01 08:42:24 +0200 |
| commit | 04edbdef02ec4386a2ae38cab7ae7d166e17a756 (patch) | |
| tree | 4814b5f91000bcd730b0c21e072835b10b1ab641 /arch/x86/kernel | |
| parent | d1716a60a8ea90788d24aa22d7eec83fbdd2d88a (diff) | |
x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y
Conditionaly compile cmpxchg8b_emu.o and EXPORT_SYMBOL(cmpxchg8b_emu).
This reduces the kernel size a bit.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <4AC43E7E.1000600@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/i386_ksyms_32.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c index 1736c5a725a..9c3bd4a2050 100644 --- a/arch/x86/kernel/i386_ksyms_32.c +++ b/arch/x86/kernel/i386_ksyms_32.c @@ -15,8 +15,10 @@ EXPORT_SYMBOL(mcount); * the export, but dont use it from C code, it is used * by assembly code and is not using C calling convention! */ +#ifndef CONFIG_X86_CMPXCHG64 extern void cmpxchg8b_emu(void); EXPORT_SYMBOL(cmpxchg8b_emu); +#endif /* Networking helper routines. */ EXPORT_SYMBOL(csum_partial_copy_generic); |