Acked-by: Markus F.X.J. Oberhumer <[email protected]>
On 2018-11-30 15:26, Dave Rodgman wrote: > From: Matt Sealey <[email protected]> > > LZO leaves some performance on the table by not realising that arm64 can > optimize count-trailing-zeros bit operations. > > Add CONFIG_ARM64 to the checked definitions alongside CONFIG_X86_64 to > enable the use of rbit/clz instructions on full 64-bit quantities. > > Link: http://lkml.kernel.org/r/[email protected] > Signed-off-by: Matt Sealey <[email protected]> > Signed-off-by: Dave Rodgman <[email protected]> > Cc: David S. Miller <[email protected]> > Cc: Greg Kroah-Hartman <[email protected]> > Cc: Herbert Xu <[email protected]> > Cc: Markus F.X.J. Oberhumer <[email protected]> > Cc: Minchan Kim <[email protected]> > Cc: Nitin Gupta <[email protected]> > Cc: Richard Purdie <[email protected]> > Cc: Sergey Senozhatsky <[email protected]> > Cc: Sonny Rao <[email protected]> > Signed-off-by: Andrew Morton <[email protected]> > Signed-off-by: Stephen Rothwell <[email protected]> > --- > lib/lzo/lzodefs.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/lzo/lzodefs.h b/lib/lzo/lzodefs.h > index c0193f726db0..c8965dc181df 100644 > --- a/lib/lzo/lzodefs.h > +++ b/lib/lzo/lzodefs.h > @@ -28,7 +28,7 @@ > > #if defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN) > #error "conflicting endian definitions" > -#elif defined(CONFIG_X86_64) > +#elif defined(CONFIG_X86_64) || defined(CONFIG_ARM64) > #define LZO_USE_CTZ64 1 > #define LZO_USE_CTZ32 1 > #elif defined(CONFIG_X86) || defined(CONFIG_PPC) > -- Markus Oberhumer, <[email protected]>, http://www.oberhumer.com/
