Hello Maintainers: Please help check this patch whether OK or not, when you have time.
Thanks. On 09/22/2013 12:40 PM, Chen Gang wrote: > Some of sub-systems may need cmpxchg64() or another cmpxchg*local() > functions, need implement them, or can not pass compiling. > > The related error (allmodconfig for arc): > > CC drivers/block/blockconsole.o > drivers/block/blockconsole.c: In function ‘bcon_advance_console_bytes’: > drivers/block/blockconsole.c:164: error: implicit declaration of function > ‘cmpxchg64’ > > > Signed-off-by: Chen Gang <[email protected]> > --- > arch/arc/include/asm/cmpxchg.h | 13 +++++++++++++ > 1 files changed, 13 insertions(+), 0 deletions(-) > > diff --git a/arch/arc/include/asm/cmpxchg.h b/arch/arc/include/asm/cmpxchg.h > index 03cd689..db251f3 100644 > --- a/arch/arc/include/asm/cmpxchg.h > +++ b/arch/arc/include/asm/cmpxchg.h > @@ -140,4 +140,17 @@ static inline unsigned long __xchg(unsigned long val, > volatile void *ptr, > */ > #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) > > +#include <asm-generic/cmpxchg-local.h> > + > +/* > + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make > + * them available. > + */ > +#define cmpxchg_local(ptr, o, n) > \ > + ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ > + (unsigned long)(n), sizeof(*(ptr)))) > +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) > +#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n)) > + > + > #endif > -- Chen Gang -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
