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author | avg <avg@FreeBSD.org> | 2014-01-16 14:34:53 +0000 |
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committer | avg <avg@FreeBSD.org> | 2014-01-16 14:34:53 +0000 |
commit | a4ee4e9fb09b34a005aa5d3419f6f11315b33b22 (patch) | |
tree | 2d91d8fef744bd0b49b0838ae98faf63886f692a /sys/cddl/contrib | |
parent | 16f4d5cb308e45e3fe74758e164b70dfc0f56d64 (diff) | |
download | FreeBSD-src-a4ee4e9fb09b34a005aa5d3419f6f11315b33b22.zip FreeBSD-src-a4ee4e9fb09b34a005aa5d3419f6f11315b33b22.tar.gz |
MFC r258630: 734 taskq_dispatch_prealloc() desired
Diffstat (limited to 'sys/cddl/contrib')
4 files changed, 33 insertions, 19 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c index 31bc32d..a5c6b16 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c @@ -825,7 +825,7 @@ static taskq_t * spa_taskq_create(spa_t *spa, const char *name, enum zti_modes mode, uint_t value) { - uint_t flags = TASKQ_PREPOPULATE; + uint_t flags = 0; boolean_t batch = B_FALSE; switch (mode) { diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h index b001e11..70a8a7e 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h @@ -24,6 +24,7 @@ * Copyright (c) 2012 by Delphix. All rights reserved. * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. * Copyright (c) 2013, Joyent, Inc. All rights reserved. + * Copyright 2011 Nexenta Systems, Inc. All rights reserved. */ #ifndef _ZIO_H @@ -474,10 +475,9 @@ struct zio { zio_cksum_report_t *io_cksum_report; uint64_t io_ena; -#ifdef _KERNEL - /* FreeBSD only. */ - struct ostask io_task; -#endif + /* Taskq dispatching state */ + taskq_ent_t io_tqent; + avl_node_t io_trim_node; list_node_t io_trim_link; }; diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c index 425a8ff..c5bcc8e 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c @@ -21,6 +21,7 @@ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2013 by Delphix. All rights reserved. + * Copyright (c) 2011 Nexenta Systems, Inc. All rights reserved. */ #include <sys/zfs_context.h> @@ -1224,7 +1225,7 @@ zio_taskq_dispatch(zio_t *zio, enum zio_taskq_type q, boolean_t cutinline) { spa_t *spa = zio->io_spa; zio_type_t t = zio->io_type; - int flags = TQ_SLEEP | (cutinline ? TQ_FRONT : 0); + int flags = (cutinline ? TQ_FRONT : 0); ASSERT(q == ZIO_TASKQ_ISSUE || q == ZIO_TASKQ_INTERRUPT); @@ -1250,13 +1251,19 @@ zio_taskq_dispatch(zio_t *zio, enum zio_taskq_type q, boolean_t cutinline) q++; ASSERT3U(q, <, ZIO_TASKQ_TYPES); -#ifdef _KERNEL - (void) taskq_dispatch_safe(spa->spa_zio_taskq[t][q], - (task_func_t *)zio_execute, zio, flags, &zio->io_task); + + /* + * NB: We are assuming that the zio can only be dispatched + * to a single taskq at a time. It would be a grievous error + * to dispatch the zio to another taskq at the same time. + */ +#if defined(illumos) || !defined(_KERNEL) + ASSERT(zio->io_tqent.tqent_next == NULL); #else - (void) taskq_dispatch(spa->spa_zio_taskq[t][q], - (task_func_t *)zio_execute, zio, flags); + ASSERT(zio->io_tqent.tqent_task.ta_pending == 0); #endif + taskq_dispatch_ent(spa->spa_zio_taskq[t][q], + (task_func_t *)zio_execute, zio, flags, &zio->io_tqent); } static boolean_t @@ -3174,16 +3181,15 @@ zio_done(zio_t *zio) * Reexecution is potentially a huge amount of work. * Hand it off to the otherwise-unused claim taskq. */ -#ifdef _KERNEL - (void) taskq_dispatch_safe( - spa->spa_zio_taskq[ZIO_TYPE_CLAIM][ZIO_TASKQ_ISSUE], - (task_func_t *)zio_reexecute, zio, TQ_SLEEP, - &zio->io_task); +#if defined(illumos) || !defined(_KERNEL) + ASSERT(zio->io_tqent.tqent_next == NULL); #else - (void) taskq_dispatch( - spa->spa_zio_taskq[ZIO_TYPE_CLAIM][ZIO_TASKQ_ISSUE], - (task_func_t *)zio_reexecute, zio, TQ_SLEEP); + ASSERT(zio->io_tqent.tqent_task.ta_pending == 0); #endif + (void) taskq_dispatch_ent( + spa->spa_zio_taskq[ZIO_TYPE_CLAIM][ZIO_TASKQ_ISSUE], + (task_func_t *)zio_reexecute, zio, 0, + &zio->io_tqent); } return (ZIO_PIPELINE_STOP); } diff --git a/sys/cddl/contrib/opensolaris/uts/common/sys/taskq.h b/sys/cddl/contrib/opensolaris/uts/common/sys/taskq.h index 246e470..1d8bfd6 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/sys/taskq.h +++ b/sys/cddl/contrib/opensolaris/uts/common/sys/taskq.h @@ -45,6 +45,12 @@ typedef struct taskq taskq_t; typedef uintptr_t taskqid_t; typedef void (task_func_t)(void *); +typedef struct taskq_ent { + struct task tqent_task; + task_func_t *tqent_func; + void *tqent_arg; +} taskq_ent_t; + struct proc; /* @@ -80,6 +86,8 @@ taskq_t *taskq_create_proc(const char *, int, pri_t, int, int, taskq_t *taskq_create_sysdc(const char *, int, int, int, struct proc *, uint_t, uint_t); taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); +void taskq_dispatch_ent(taskq_t *, task_func_t, void *, uint_t, + taskq_ent_t *); void nulltask(void *); void taskq_destroy(taskq_t *); void taskq_wait(taskq_t *); |