md: Factor out RAID6 algorithms into lib/
We'll want to use these in btrfs too.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 2158377..891f7c8 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -121,7 +121,7 @@
config MD_RAID456
tristate "RAID-4/RAID-5/RAID-6 mode"
depends on BLK_DEV_MD
- select MD_RAID6_PQ
+ select RAID6_PQ
select ASYNC_MEMCPY
select ASYNC_XOR
select ASYNC_PQ
@@ -165,12 +165,9 @@
If unsure, say N.
-config MD_RAID6_PQ
- tristate
-
config ASYNC_RAID6_TEST
tristate "Self test for hardware accelerated raid6 recovery"
- depends on MD_RAID6_PQ
+ depends on RAID6_PQ
select ASYNC_RAID6_RECOV
---help---
This is a one-shot self test that permutes through the
diff --git a/drivers/md/Makefile b/drivers/md/Makefile
index 1dc4185..c9b3a78 100644
--- a/drivers/md/Makefile
+++ b/drivers/md/Makefile
@@ -12,13 +12,6 @@
+= dm-log-userspace-base.o dm-log-userspace-transfer.o
md-mod-y += md.o bitmap.o
raid456-y += raid5.o
-raid6_pq-y += raid6algos.o raid6recov.o raid6tables.o \
- raid6int1.o raid6int2.o raid6int4.o \
- raid6int8.o raid6int16.o raid6int32.o \
- raid6altivec1.o raid6altivec2.o raid6altivec4.o \
- raid6altivec8.o \
- raid6mmx.o raid6sse1.o raid6sse2.o
-hostprogs-y += mktables
# Note: link order is important. All raid personalities
# and must come before md.o, as they each initialise
@@ -29,7 +22,6 @@
obj-$(CONFIG_MD_RAID0) += raid0.o
obj-$(CONFIG_MD_RAID1) += raid1.o
obj-$(CONFIG_MD_RAID10) += raid10.o
-obj-$(CONFIG_MD_RAID6_PQ) += raid6_pq.o
obj-$(CONFIG_MD_RAID456) += raid456.o
obj-$(CONFIG_MD_MULTIPATH) += multipath.o
obj-$(CONFIG_MD_FAULTY) += faulty.o
@@ -45,75 +37,7 @@
obj-$(CONFIG_DM_LOG_USERSPACE) += dm-log-userspace.o
obj-$(CONFIG_DM_ZERO) += dm-zero.o
-quiet_cmd_unroll = UNROLL $@
- cmd_unroll = $(PERL) $(srctree)/$(src)/unroll.pl $(UNROLL) \
- < $< > $@ || ( rm -f $@ && exit 1 )
-
-ifeq ($(CONFIG_ALTIVEC),y)
-altivec_flags := -maltivec -mabi=altivec
-endif
-
ifeq ($(CONFIG_DM_UEVENT),y)
dm-mod-objs += dm-uevent.o
endif
-targets += raid6int1.c
-$(obj)/raid6int1.c: UNROLL := 1
-$(obj)/raid6int1.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-targets += raid6int2.c
-$(obj)/raid6int2.c: UNROLL := 2
-$(obj)/raid6int2.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-targets += raid6int4.c
-$(obj)/raid6int4.c: UNROLL := 4
-$(obj)/raid6int4.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-targets += raid6int8.c
-$(obj)/raid6int8.c: UNROLL := 8
-$(obj)/raid6int8.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-targets += raid6int16.c
-$(obj)/raid6int16.c: UNROLL := 16
-$(obj)/raid6int16.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-targets += raid6int32.c
-$(obj)/raid6int32.c: UNROLL := 32
-$(obj)/raid6int32.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-CFLAGS_raid6altivec1.o += $(altivec_flags)
-targets += raid6altivec1.c
-$(obj)/raid6altivec1.c: UNROLL := 1
-$(obj)/raid6altivec1.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-CFLAGS_raid6altivec2.o += $(altivec_flags)
-targets += raid6altivec2.c
-$(obj)/raid6altivec2.c: UNROLL := 2
-$(obj)/raid6altivec2.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-CFLAGS_raid6altivec4.o += $(altivec_flags)
-targets += raid6altivec4.c
-$(obj)/raid6altivec4.c: UNROLL := 4
-$(obj)/raid6altivec4.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-CFLAGS_raid6altivec8.o += $(altivec_flags)
-targets += raid6altivec8.c
-$(obj)/raid6altivec8.c: UNROLL := 8
-$(obj)/raid6altivec8.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
- $(call if_changed,unroll)
-
-quiet_cmd_mktable = TABLE $@
- cmd_mktable = $(obj)/mktables > $@ || ( rm -f $@ && exit 1 )
-
-targets += raid6tables.c
-$(obj)/raid6tables.c: $(obj)/mktables FORCE
- $(call if_changed,mktable)
diff --git a/lib/Kconfig b/lib/Kconfig
index bb1326d..1cc756c 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -7,6 +7,9 @@
menu "Library routines"
+config RAID6_PQ
+ tristate
+
config BITREVERSE
tristate
diff --git a/lib/Makefile b/lib/Makefile
index 2e78277..b25faf0 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -65,6 +65,7 @@
obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
obj-$(CONFIG_LZO_COMPRESS) += lzo/
obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
+obj-$(CONFIG_RAID6_PQ) += raid6/
lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
diff --git a/lib/raid6/Makefile b/lib/raid6/Makefile
new file mode 100644
index 0000000..b2fe4ba
--- /dev/null
+++ b/lib/raid6/Makefile
@@ -0,0 +1,78 @@
+obj-$(CONFIG_RAID6_PQ) += raid6_pq.o
+
+raid6_pq-y += raid6algos.o raid6recov.o raid6tables.o \
+ raid6int1.o raid6int2.o raid6int4.o \
+ raid6int8.o raid6int16.o raid6int32.o \
+ raid6altivec1.o raid6altivec2.o raid6altivec4.o \
+ raid6altivec8.o \
+ raid6mmx.o raid6sse1.o raid6sse2.o
+hostprogs-y += mktables
+
+quiet_cmd_unroll = UNROLL $@
+ cmd_unroll = $(PERL) $(srctree)/$(src)/unroll.pl $(UNROLL) \
+ < $< > $@ || ( rm -f $@ && exit 1 )
+
+ifeq ($(CONFIG_ALTIVEC),y)
+altivec_flags := -maltivec -mabi=altivec
+endif
+
+targets += raid6int1.c
+$(obj)/raid6int1.c: UNROLL := 1
+$(obj)/raid6int1.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+targets += raid6int2.c
+$(obj)/raid6int2.c: UNROLL := 2
+$(obj)/raid6int2.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+targets += raid6int4.c
+$(obj)/raid6int4.c: UNROLL := 4
+$(obj)/raid6int4.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+targets += raid6int8.c
+$(obj)/raid6int8.c: UNROLL := 8
+$(obj)/raid6int8.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+targets += raid6int16.c
+$(obj)/raid6int16.c: UNROLL := 16
+$(obj)/raid6int16.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+targets += raid6int32.c
+$(obj)/raid6int32.c: UNROLL := 32
+$(obj)/raid6int32.c: $(src)/raid6int.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+CFLAGS_raid6altivec1.o += $(altivec_flags)
+targets += raid6altivec1.c
+$(obj)/raid6altivec1.c: UNROLL := 1
+$(obj)/raid6altivec1.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+CFLAGS_raid6altivec2.o += $(altivec_flags)
+targets += raid6altivec2.c
+$(obj)/raid6altivec2.c: UNROLL := 2
+$(obj)/raid6altivec2.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+CFLAGS_raid6altivec4.o += $(altivec_flags)
+targets += raid6altivec4.c
+$(obj)/raid6altivec4.c: UNROLL := 4
+$(obj)/raid6altivec4.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+CFLAGS_raid6altivec8.o += $(altivec_flags)
+targets += raid6altivec8.c
+$(obj)/raid6altivec8.c: UNROLL := 8
+$(obj)/raid6altivec8.c: $(src)/raid6altivec.uc $(src)/unroll.pl FORCE
+ $(call if_changed,unroll)
+
+quiet_cmd_mktable = TABLE $@
+ cmd_mktable = $(obj)/mktables > $@ || ( rm -f $@ && exit 1 )
+
+targets += raid6tables.c
+$(obj)/raid6tables.c: $(obj)/mktables FORCE
+ $(call if_changed,mktable)
diff --git a/drivers/md/mktables.c b/lib/raid6/mktables.c
similarity index 100%
rename from drivers/md/mktables.c
rename to lib/raid6/mktables.c
diff --git a/drivers/md/raid6algos.c b/lib/raid6/raid6algos.c
similarity index 100%
rename from drivers/md/raid6algos.c
rename to lib/raid6/raid6algos.c
diff --git a/drivers/md/raid6altivec.uc b/lib/raid6/raid6altivec.uc
similarity index 100%
rename from drivers/md/raid6altivec.uc
rename to lib/raid6/raid6altivec.uc
diff --git a/drivers/md/raid6int.uc b/lib/raid6/raid6int.uc
similarity index 100%
rename from drivers/md/raid6int.uc
rename to lib/raid6/raid6int.uc
diff --git a/drivers/md/raid6mmx.c b/lib/raid6/raid6mmx.c
similarity index 100%
rename from drivers/md/raid6mmx.c
rename to lib/raid6/raid6mmx.c
diff --git a/drivers/md/raid6recov.c b/lib/raid6/raid6recov.c
similarity index 100%
rename from drivers/md/raid6recov.c
rename to lib/raid6/raid6recov.c
diff --git a/drivers/md/raid6sse1.c b/lib/raid6/raid6sse1.c
similarity index 100%
rename from drivers/md/raid6sse1.c
rename to lib/raid6/raid6sse1.c
diff --git a/drivers/md/raid6sse2.c b/lib/raid6/raid6sse2.c
similarity index 100%
rename from drivers/md/raid6sse2.c
rename to lib/raid6/raid6sse2.c
diff --git a/drivers/md/raid6test/Makefile b/lib/raid6/raid6test/Makefile
similarity index 100%
rename from drivers/md/raid6test/Makefile
rename to lib/raid6/raid6test/Makefile
diff --git a/drivers/md/raid6test/test.c b/lib/raid6/raid6test/test.c
similarity index 100%
rename from drivers/md/raid6test/test.c
rename to lib/raid6/raid6test/test.c
diff --git a/drivers/md/raid6x86.h b/lib/raid6/raid6x86.h
similarity index 100%
rename from drivers/md/raid6x86.h
rename to lib/raid6/raid6x86.h
diff --git a/drivers/md/unroll.pl b/lib/raid6/unroll.pl
similarity index 100%
rename from drivers/md/unroll.pl
rename to lib/raid6/unroll.pl