diff options
Diffstat (limited to 'sys/contrib/opensolaris/uts/common/fs/zfs/sys/zio_impl.h')
| -rw-r--r-- | sys/contrib/opensolaris/uts/common/fs/zfs/sys/zio_impl.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/sys/contrib/opensolaris/uts/common/fs/zfs/sys/zio_impl.h b/sys/contrib/opensolaris/uts/common/fs/zfs/sys/zio_impl.h new file mode 100644 index 000000000000..d2ddbc34e922 --- /dev/null +++ b/sys/contrib/opensolaris/uts/common/fs/zfs/sys/zio_impl.h @@ -0,0 +1,205 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2006 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#ifndef _ZIO_IMPL_H +#define _ZIO_IMPL_H + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <sys/zfs_context.h> +#include <sys/zio.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * I/O Groups: pipeline stage definitions. + */ + +typedef enum zio_stage { + ZIO_STAGE_OPEN = 0, /* RWFCI */ + ZIO_STAGE_WAIT_CHILDREN_READY, /* RWFCI */ + + ZIO_STAGE_WRITE_COMPRESS, /* -W--- */ + ZIO_STAGE_CHECKSUM_GENERATE, /* -W--- */ + + ZIO_STAGE_GANG_PIPELINE, /* -WFC- */ + + ZIO_STAGE_GET_GANG_HEADER, /* -WFC- */ + ZIO_STAGE_REWRITE_GANG_MEMBERS, /* -W--- */ + ZIO_STAGE_FREE_GANG_MEMBERS, /* --F-- */ + ZIO_STAGE_CLAIM_GANG_MEMBERS, /* ---C- */ + + ZIO_STAGE_DVA_ALLOCATE, /* -W--- */ + ZIO_STAGE_DVA_FREE, /* --F-- */ + ZIO_STAGE_DVA_CLAIM, /* ---C- */ + + ZIO_STAGE_GANG_CHECKSUM_GENERATE, /* -W--- */ + + ZIO_STAGE_READY, /* RWFCI */ + + ZIO_STAGE_VDEV_IO_START, /* RW--I */ + ZIO_STAGE_VDEV_IO_DONE, /* RW--I */ + ZIO_STAGE_VDEV_IO_ASSESS, /* RW--I */ + + ZIO_STAGE_WAIT_CHILDREN_DONE, /* RWFCI */ + + ZIO_STAGE_CHECKSUM_VERIFY, /* R---- */ + ZIO_STAGE_READ_GANG_MEMBERS, /* R---- */ + ZIO_STAGE_READ_DECOMPRESS, /* R---- */ + + ZIO_STAGE_DONE /* RWFCI */ +} zio_stage_t; + +/* + * The stages for which there's some performance value in going async. + * When compression is enabled, ZIO_STAGE_WRITE_COMPRESS is ORed in as well. + */ +#define ZIO_ASYNC_PIPELINE_STAGES \ + ((1U << ZIO_STAGE_CHECKSUM_GENERATE) | \ + (1U << ZIO_STAGE_VDEV_IO_DONE) | \ + (1U << ZIO_STAGE_CHECKSUM_VERIFY) | \ + (1U << ZIO_STAGE_READ_DECOMPRESS)) + +#define ZIO_VDEV_IO_PIPELINE \ + ((1U << ZIO_STAGE_VDEV_IO_START) | \ + (1U << ZIO_STAGE_VDEV_IO_DONE) | \ + (1U << ZIO_STAGE_VDEV_IO_ASSESS)) + +#define ZIO_READ_PHYS_PIPELINE \ + ((1U << ZIO_STAGE_OPEN) | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_READY) | \ + (1U << ZIO_STAGE_READY) | \ + ZIO_VDEV_IO_PIPELINE | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_DONE) | \ + (1U << ZIO_STAGE_CHECKSUM_VERIFY) | \ + (1U << ZIO_STAGE_DONE)) + +#define ZIO_READ_PIPELINE \ + ZIO_READ_PHYS_PIPELINE + +#define ZIO_WRITE_PHYS_PIPELINE \ + ((1U << ZIO_STAGE_OPEN) | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_READY) | \ + (1U << ZIO_STAGE_CHECKSUM_GENERATE) | \ + (1U << ZIO_STAGE_READY) | \ + ZIO_VDEV_IO_PIPELINE | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_DONE) | \ + (1U << ZIO_STAGE_DONE)) + +#define ZIO_WRITE_COMMON_PIPELINE \ + ZIO_WRITE_PHYS_PIPELINE + +#define ZIO_WRITE_PIPELINE \ + ((1U << ZIO_STAGE_WRITE_COMPRESS) | \ + ZIO_WRITE_COMMON_PIPELINE) + +#define ZIO_GANG_STAGES \ + ((1U << ZIO_STAGE_GET_GANG_HEADER) | \ + (1U << ZIO_STAGE_REWRITE_GANG_MEMBERS) | \ + (1U << ZIO_STAGE_FREE_GANG_MEMBERS) | \ + (1U << ZIO_STAGE_CLAIM_GANG_MEMBERS) | \ + (1U << ZIO_STAGE_GANG_CHECKSUM_GENERATE) | \ + (1U << ZIO_STAGE_READ_GANG_MEMBERS)) + +#define ZIO_REWRITE_PIPELINE \ + ((1U << ZIO_STAGE_GANG_PIPELINE) | \ + (1U << ZIO_STAGE_GET_GANG_HEADER) | \ + (1U << ZIO_STAGE_REWRITE_GANG_MEMBERS) | \ + (1U << ZIO_STAGE_GANG_CHECKSUM_GENERATE) | \ + ZIO_WRITE_COMMON_PIPELINE) + +#define ZIO_WRITE_ALLOCATE_PIPELINE \ + ((1U << ZIO_STAGE_DVA_ALLOCATE) | \ + ZIO_WRITE_COMMON_PIPELINE) + +#define ZIO_GANG_FREE_STAGES \ + ((1U << ZIO_STAGE_GET_GANG_HEADER) | \ + (1U << ZIO_STAGE_FREE_GANG_MEMBERS)) + +#define ZIO_FREE_PIPELINE \ + ((1U << ZIO_STAGE_OPEN) | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_READY) | \ + (1U << ZIO_STAGE_GANG_PIPELINE) | \ + (1U << ZIO_STAGE_GET_GANG_HEADER) | \ + (1U << ZIO_STAGE_FREE_GANG_MEMBERS) | \ + (1U << ZIO_STAGE_DVA_FREE) | \ + (1U << ZIO_STAGE_READY) | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_DONE) | \ + (1U << ZIO_STAGE_DONE)) + +#define ZIO_CLAIM_PIPELINE \ + ((1U << ZIO_STAGE_OPEN) | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_READY) | \ + (1U << ZIO_STAGE_GANG_PIPELINE) | \ + (1U << ZIO_STAGE_GET_GANG_HEADER) | \ + (1U << ZIO_STAGE_CLAIM_GANG_MEMBERS) | \ + (1U << ZIO_STAGE_DVA_CLAIM) | \ + (1U << ZIO_STAGE_READY) | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_DONE) | \ + (1U << ZIO_STAGE_DONE)) + +#define ZIO_IOCTL_PIPELINE \ + ((1U << ZIO_STAGE_OPEN) | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_READY) | \ + (1U << ZIO_STAGE_READY) | \ + ZIO_VDEV_IO_PIPELINE | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_DONE) | \ + (1U << ZIO_STAGE_DONE)) + +#define ZIO_WAIT_FOR_CHILDREN_PIPELINE \ + ((1U << ZIO_STAGE_WAIT_CHILDREN_READY) | \ + (1U << ZIO_STAGE_READY) | \ + (1U << ZIO_STAGE_WAIT_CHILDREN_DONE) | \ + (1U << ZIO_STAGE_DONE)) + +#define ZIO_WAIT_FOR_CHILDREN_DONE_PIPELINE \ + ((1U << ZIO_STAGE_WAIT_CHILDREN_DONE) | \ + (1U << ZIO_STAGE_DONE)) + +#define ZIO_VDEV_CHILD_PIPELINE \ + (ZIO_WAIT_FOR_CHILDREN_DONE_PIPELINE | \ + ZIO_VDEV_IO_PIPELINE) + +#define ZIO_ERROR_PIPELINE_MASK \ + ZIO_WAIT_FOR_CHILDREN_PIPELINE + +typedef struct zio_transform zio_transform_t; +struct zio_transform { + void *zt_data; + uint64_t zt_size; + uint64_t zt_bufsize; + zio_transform_t *zt_next; +}; + +extern void zio_inject_init(void); +extern void zio_inject_fini(void); + +#ifdef __cplusplus +} +#endif + +#endif /* _ZIO_IMPL_H */ |