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authorJim Kukunas <james.t.kukunas@linux.intel.com>2012-05-22 13:54:18 +1000
committerNeilBrown <neilb@suse.de>2012-05-22 13:54:18 +1000
commit048a8b8c89dc427dd7a58527c8923224b1e66d83 (patch)
treec8e09964537839f3848d0ad0e25ee40e873c3d09 /include/linux/raid
parentf674ef7b43881b2ac11f98d6ba2dc5d9dd0dd118 (diff)
lib/raid6: Add SSSE3 optimized recovery functions
Add SSSE3 optimized recovery functions, as well as a system for selecting the most appropriate recovery functions to use. Originally-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>
Diffstat (limited to 'include/linux/raid')
-rw-r--r--include/linux/raid/pq.h18
1 files changed, 16 insertions, 2 deletions
diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h
index 53272e9860a7..640c69ceec96 100644
--- a/include/linux/raid/pq.h
+++ b/include/linux/raid/pq.h
@@ -99,8 +99,20 @@ extern const struct raid6_calls raid6_altivec2;
extern const struct raid6_calls raid6_altivec4;
extern const struct raid6_calls raid6_altivec8;
+struct raid6_recov_calls {
+ void (*data2)(int, size_t, int, int, void **);
+ void (*datap)(int, size_t, int, void **);
+ int (*valid)(void);
+ const char *name;
+ int priority;
+};
+
+extern const struct raid6_recov_calls raid6_recov_intx1;
+extern const struct raid6_recov_calls raid6_recov_ssse3;
+
/* Algorithm list */
extern const struct raid6_calls * const raid6_algos[];
+extern const struct raid6_recov_calls *const raid6_recov_algos[];
int raid6_select_algo(void);
/* Return values from chk_syndrome */
@@ -111,14 +123,16 @@ int raid6_select_algo(void);
/* Galois field tables */
extern const u8 raid6_gfmul[256][256] __attribute__((aligned(256)));
+extern const u8 raid6_vgfmul[256][32] __attribute__((aligned(256)));
extern const u8 raid6_gfexp[256] __attribute__((aligned(256)));
extern const u8 raid6_gfinv[256] __attribute__((aligned(256)));
extern const u8 raid6_gfexi[256] __attribute__((aligned(256)));
/* Recovery routines */
-void raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
+extern void (*raid6_2data_recov)(int disks, size_t bytes, int faila, int failb,
void **ptrs);
-void raid6_datap_recov(int disks, size_t bytes, int faila, void **ptrs);
+extern void (*raid6_datap_recov)(int disks, size_t bytes, int faila,
+ void **ptrs);
void raid6_dual_recov(int disks, size_t bytes, int faila, int failb,
void **ptrs);