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yaml
---
r: 8999
b: refs/heads/master
c: d7e70ba
h: refs/heads/master
i:
  8997: 798d2db
  8995: 847bf1f
  8991: 74ebcdb
v: v3
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H. Peter Anvin authored and Linus Torvalds committed Sep 17, 2005
1 parent 0042f7c commit a33645c
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Showing 5 changed files with 41 additions and 11 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 0d0fc3a2d6901bdedd8497acdb3358e2da9abefc
refs/heads/master: d7e70ba45fd9850296ebb78ff5827f6a375f650c
4 changes: 4 additions & 0 deletions trunk/drivers/md/raid6.h
Original file line number Diff line number Diff line change
Expand Up @@ -69,9 +69,13 @@ extern const char raid6_empty_zero_page[PAGE_SIZE];
#define __init
#define __exit
#define __attribute_const__ __attribute__((const))
#define noinline __attribute__((noinline))

#define preempt_enable()
#define preempt_disable()
#define cpu_has_feature(x) 1
#define enable_kernel_altivec()
#define disable_kernel_altivec()

#endif /* __KERNEL__ */

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1 change: 1 addition & 0 deletions trunk/drivers/md/raid6algos.c
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
#include "raid6.h"
#ifndef __KERNEL__
#include <sys/mman.h>
#include <stdio.h>
#endif

struct raid6_calls raid6_call;
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18 changes: 13 additions & 5 deletions trunk/drivers/md/raid6altivec.uc
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Expand Up @@ -27,16 +27,20 @@
#ifdef CONFIG_ALTIVEC

#include <altivec.h>
#include <asm/system.h>
#include <asm/cputable.h>
#ifdef __KERNEL__
# include <asm/system.h>
# include <asm/cputable.h>
#endif

/*
* This is the C data type to use
* This is the C data type to use. We use a vector of
* signed char so vec_cmpgt() will generate the right
* instruction.
*/

typedef vector unsigned char unative_t;
typedef vector signed char unative_t;

#define NBYTES(x) ((vector unsigned char) {x,x,x,x, x,x,x,x, x,x,x,x, x,x,x,x})
#define NBYTES(x) ((vector signed char) {x,x,x,x, x,x,x,x, x,x,x,x, x,x,x,x})
#define NSIZE sizeof(unative_t)

/*
Expand Down Expand Up @@ -108,7 +112,11 @@ int raid6_have_altivec(void);
int raid6_have_altivec(void)
{
/* This assumes either all CPUs have Altivec or none does */
# ifdef __KERNEL__
return cpu_has_feature(CPU_FTR_ALTIVEC);
# else
return 1;
# endif
}
#endif

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27 changes: 22 additions & 5 deletions trunk/drivers/md/raid6test/Makefile
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Expand Up @@ -8,6 +8,8 @@ OPTFLAGS = -O2 # Adjust as desired
CFLAGS = -I.. -g $(OPTFLAGS)
LD = ld
PERL = perl
AR = ar
RANLIB = ranlib

.c.o:
$(CC) $(CFLAGS) -c -o $@ $<
Expand All @@ -18,18 +20,33 @@ PERL = perl
%.uc: ../%.uc
cp -f $< $@

all: raid6.o raid6test
all: raid6.a raid6test

raid6.o: raid6int1.o raid6int2.o raid6int4.o raid6int8.o raid6int16.o \
raid6.a: raid6int1.o raid6int2.o raid6int4.o raid6int8.o raid6int16.o \
raid6int32.o \
raid6mmx.o raid6sse1.o raid6sse2.o \
raid6altivec1.o raid6altivec2.o raid6altivec4.o raid6altivec8.o \
raid6recov.o raid6algos.o \
raid6tables.o
$(LD) -r -o $@ $^
rm -f $@
$(AR) cq $@ $^
$(RANLIB) $@

raid6test: raid6.o test.c
raid6test: test.c raid6.a
$(CC) $(CFLAGS) -o raid6test $^

raid6altivec1.c: raid6altivec.uc ../unroll.pl
$(PERL) ../unroll.pl 1 < raid6altivec.uc > $@

raid6altivec2.c: raid6altivec.uc ../unroll.pl
$(PERL) ../unroll.pl 2 < raid6altivec.uc > $@

raid6altivec4.c: raid6altivec.uc ../unroll.pl
$(PERL) ../unroll.pl 4 < raid6altivec.uc > $@

raid6altivec8.c: raid6altivec.uc ../unroll.pl
$(PERL) ../unroll.pl 8 < raid6altivec.uc > $@

raid6int1.c: raid6int.uc ../unroll.pl
$(PERL) ../unroll.pl 1 < raid6int.uc > $@

Expand All @@ -52,7 +69,7 @@ raid6tables.c: mktables
./mktables > raid6tables.c

clean:
rm -f *.o mktables mktables.c raid6int.uc raid6*.c raid6test
rm -f *.o *.a mktables mktables.c raid6int.uc raid6*.c raid6test

spotless: clean
rm -f *~

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