lib/raid6: build proper files on corresponding arch

sse and avx2 stuff only exist on x86 arch, and we don't need to build
altivec on x86. And we can do that at lib/raid6/Makefile.

Proposed-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Jim Kukunas <james.t.kukunas@linux.intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>

8 files changed, 28 insertions, 27 deletions

diff --git a/lib/raid6/Makefile b/lib/raid6/Makefile
index 3430711..9f7c184 100644
--- a/lib/raid6/Makefile
+++ b/lib/raid6/Makefile
@@ -1,8 +1,11 @@
 obj-$(CONFIG_RAID6_PQ)	+= raid6_pq.o
 
-raid6_pq-y	+= algos.o recov.o recov_ssse3.o recov_avx2.o tables.o int1.o int2.o int4.o \
-		   int8.o int16.o int32.o altivec1.o altivec2.o altivec4.o \
-		   altivec8.o mmx.o sse1.o sse2.o avx2.o
+raid6_pq-y	+= algos.o recov.o tables.o int1.o int2.o int4.o \
+		   int8.o int16.o int32.o
+
+raid6_pq-$(CONFIG_X86) += recov_ssse3.o recov_avx2.o mmx.o sse1.o sse2.o avx2.o
+raid6_pq-$(CONFIG_ALTIVEC) += altivec1.o altivec2.o altivec4.o altivec8.o
+
 hostprogs-y	+= mktables
 
 quiet_cmd_unroll = UNROLL  $@
diff --git a/lib/raid6/altivec.uc b/lib/raid6/altivec.uc
index b71012b..7cc12b5 100644
--- a/lib/raid6/altivec.uc
+++ b/lib/raid6/altivec.uc
@@ -24,13 +24,10 @@
 
 #include <linux/raid/pq.h>
 
-#ifdef CONFIG_ALTIVEC
-
 #include <altivec.h>
 #ifdef __KERNEL__
 # include <asm/cputable.h>
 # include <asm/switch_to.h>
-#endif
 
 /*
  * This is the C data type to use.  We use a vector of
diff --git a/lib/raid6/mmx.c b/lib/raid6/mmx.c
index 279347f..590c71c 100644
--- a/lib/raid6/mmx.c
+++ b/lib/raid6/mmx.c
@@ -16,7 +16,7 @@
  * MMX implementation of RAID-6 syndrome functions
  */
 
-#if defined(__i386__) && !defined(__arch_um__)
+#ifdef CONFIG_X86_32
 
 #include <linux/raid/pq.h>
 #include "x86.h"
diff --git a/lib/raid6/recov_avx2.c b/lib/raid6/recov_avx2.c
index 43a9bab..e1eea43 100644
--- a/lib/raid6/recov_avx2.c
+++ b/lib/raid6/recov_avx2.c
@@ -8,8 +8,6 @@
  * of the License.
  */
 
-#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)
-
 #if CONFIG_AS_AVX2
 
 #include <linux/raid/pq.h>
@@ -323,5 +321,3 @@ const struct raid6_recov_calls raid6_recov_avx2 = {
 #else
 #warning "your version of binutils lacks AVX2 support"
 #endif
-
-#endif
diff --git a/lib/raid6/recov_ssse3.c b/lib/raid6/recov_ssse3.c
index ecb710c..a916832 100644
--- a/lib/raid6/recov_ssse3.c
+++ b/lib/raid6/recov_ssse3.c
@@ -7,8 +7,6 @@
  * of the License.
  */
 
-#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)
-
 #include <linux/raid/pq.h>
 #include "x86.h"
 
@@ -332,5 +330,3 @@ const struct raid6_recov_calls raid6_recov_ssse3 = {
 #endif
 	.priority = 1,
 };
-
-#endif
diff --git a/lib/raid6/sse1.c b/lib/raid6/sse1.c
index 10dd9194..f762971 100644
--- a/lib/raid6/sse1.c
+++ b/lib/raid6/sse1.c
@@ -21,7 +21,7 @@
  * worthwhile as a separate implementation.
  */
 
-#if defined(__i386__) && !defined(__arch_um__)
+#ifdef CONFIG_X86_32
 
 #include <linux/raid/pq.h>
 #include "x86.h"
diff --git a/lib/raid6/sse2.c b/lib/raid6/sse2.c
index bc2d57d..85b82c8 100644
--- a/lib/raid6/sse2.c
+++ b/lib/raid6/sse2.c
@@ -17,8 +17,6 @@
  *
  */
 
-#if (defined(__i386__) || defined(__x86_64__)) && !defined(__arch_um__)
-
 #include <linux/raid/pq.h>
 #include "x86.h"
 
@@ -159,9 +157,7 @@ const struct raid6_calls raid6_sse2x2 = {
 	1			/* Has cache hints */
 };
 
-#endif
-
-#if defined(__x86_64__) && !defined(__arch_um__)
+#ifdef CONFIG_X86_64
 
 /*
  * Unrolled-by-4 SSE2 implementation
@@ -259,4 +255,4 @@ const struct raid6_calls raid6_sse2x4 = {
 	1			/* Has cache hints */
 };
 
-#endif
+#endif /* CONFIG_X86_64 */
diff --git a/lib/raid6/test/Makefile b/lib/raid6/test/Makefile
index 754cbac..087332d 100644
--- a/lib/raid6/test/Makefile
+++ b/lib/raid6/test/Makefile
@@ -10,16 +10,31 @@ LD	 = ld
 AWK	 = awk -f
 AR	 = ar
 RANLIB	 = ranlib
+OBJS	 = int1.o int2.o int4.o int8.o int16.o int32.o recov.o algos.o tables.o
 
 ARCH := $(shell uname -m 2>/dev/null | sed -e /s/i.86/i386/)
 ifeq ($(ARCH),i386)
         CFLAGS += -DCONFIG_X86_32
+        IS_X86 = yes
 endif
 ifeq ($(ARCH),x86_64)
         CFLAGS += -DCONFIG_X86_64
+        IS_X86 = yes
+endif
+
+ifeq ($(IS_X86),yes)
+        OBJS   += mmx.o sse1.o sse2.o avx2.o recov_ssse3.o recov_avx2.o
+        CFLAGS += $(shell echo "vpbroadcastb %xmm0, %ymm1" |	\
+                    gcc -c -x assembler - >&/dev/null &&	\
+                    rm ./-.o && echo -DCONFIG_AS_AVX2=1)
+else
+        HAS_ALTIVEC := $(shell echo -e '\#include <altivec.h>\nvector int a;' |\
+                         gcc -c -x c - >&/dev/null && \
+                         rm ./-.o && echo yes)
+        ifeq ($(HAS_ALTIVEC),yes)
+                OBJS += altivec1.o altivec2.o altivec4.o altivec8.o
+        endif
 endif
-CFLAGS += $(shell echo "vpbroadcastb %xmm0, %ymm1"| gcc -c -x assembler - &&\
-	     rm ./-.o && echo -DCONFIG_AS_AVX2=1)
 
 .c.o:
 	$(CC) $(CFLAGS) -c -o $@ $<
@@ -32,9 +47,7 @@ CFLAGS += $(shell echo "vpbroadcastb %xmm0, %ymm1"| gcc -c -x assembler - &&\
 
 all:	raid6.a raid6test
 
-raid6.a: int1.o int2.o int4.o int8.o int16.o int32.o mmx.o sse1.o sse2.o avx2.o \
-	 altivec1.o altivec2.o altivec4.o altivec8.o recov.o recov_ssse3.o recov_avx2.o algos.o \
-	 tables.o
+raid6.a: $(OBJS)
 	 rm -f $@
 	 $(AR) cq $@ $^
 	 $(RANLIB) $@