Add kstat entries for ZFS compression statistics.

sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio_compress.h:
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio_compress.c:
	Add module lifetime functions to allocate and teardown
	state data.

	Report:
		- Compression attempts.
		- Buffers found to be empty.
		- Compression calls that are skipped because
		  the data length is already less than or
		  equal to the minimum block length.
		- Compression attempts that fail to yield a 12.5%
		  compression ratio.

sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c:
	Add calls to the zio_compress.c module's init and fini
	functions.

Sponosred by:	Spectra Logic Corporation
MFC after:	2 weeks

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
index fd0464e..f344f6a 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c
@@ -1832,6 +1832,7 @@ dmu_init(void)
 	dnode_init();
 	dbuf_init();
 	zfetch_init();
+	zio_compress_init();
 	l2arc_init();
 	arc_init();
 }
@@ -1842,6 +1843,7 @@ dmu_fini(void)
 	arc_fini(); /* arc depends on l2arc, so arc must go first */
 	l2arc_fini();
 	zfetch_fini();
+	zio_compress_fini();
 	dbuf_fini();
 	dnode_fini();
 	dmu_objset_fini();