cluster/ec: Add support for hardware acceleration

This patch implements functionalities for fast encoding/decoding
using hardware support. Currently optimized x86_64, SSE and AVX is
added.

Additionally this patch implements a caching mecanism for inverse
matrices to reduce computation time, as well as a new method for
computing the inverse that takes quadratic time instead of cubic.

Finally some unnecessary memory copies have been eliminated to
further increase performance.

Change-Id: I26c75f26fb4201bd22b51335448ea4357235065a
BUG: 1289922
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/12837
Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/xlators/cluster/ec/src/ec-code-avx.h b/xlators/cluster/ec/src/ec-code-avx.h
new file mode 100644
index 00000000000..fdca4ad2c8f
--- /dev/null
+++ b/xlators/cluster/ec/src/ec-code-avx.h
@@ -0,0 +1,18 @@
+/*
+  Copyright (c) 2015 DataLab, s.l. <http://www.datalab.es>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+#ifndef __EC_CODE_AVX_H__
+#define __EC_CODE_AVX_H__
+
+#include "ec-code.h"
+
+extern ec_code_gen_t ec_code_gen_avx;
+
+#endif /* __EC_CODE_AVX_H__ */