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Merge 0a9a614d2b into 308f7c2f14

This commit is contained in:
Rob Norris 2024-09-10 12:45:41 -04:00 committed by GitHub
parent 308f7c2f14 0a9a614d2b
commit 0a8f745386
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GPG Key ID: B5690EEEBB952194
5 changed files with 391 additions and 72 deletions
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6
include/os/linux/spl/sys/kstat.h
View File

@ -20,6 +20,10 @@
* You should have received a copy of the GNU General Public License along
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Copyright (c) 2024, Klara, Inc.
* Copyright (c) 2024, Syneto
*/
#ifndef _SPL_KSTAT_H
#define _SPL_KSTAT_H
@ -89,6 +93,8 @@ typedef struct kstat_module {
struct list_head ksm_module_list; /* module linkage */
struct list_head ksm_kstat_list; /* list of kstat entries */
struct proc_dir_entry *ksm_proc; /* proc entry */
struct kstat_module *ksm_parent; /* parent module in hierarchy */
uint_t ksm_nchildren; /* number of child modules */
} kstat_module_t;
typedef struct kstat_raw_ops {

25
include/sys/vdev_impl.h
View File

@ -22,7 +22,8 @@
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2020 by Delphix. All rights reserved.
* Copyright (c) 2017, Intel Corporation.
* Copyright (c) 2023, Klara Inc.
* Copyright (c) 2023, 2024, Klara, Inc.
* Copyright (c) 2024, Syneto
*/
#ifndef _SYS_VDEV_IMPL_H
@ -41,6 +42,7 @@
#include <sys/vdev_rebuild.h>
#include <sys/vdev_removal.h>
#include <sys/zfs_ratelimit.h>
#include <sys/wmsum.h>
#ifdef __cplusplus
extern "C" {
@ -138,6 +140,25 @@ typedef union vdev_queue_class {
avl_tree_t vqc_tree;
} vdev_queue_class_t;
typedef struct vdev_queue_sums {
/* gauges (inc/dec counters, current value) */
wmsum_t vqs_io_queued;
wmsum_t vqs_io_class_queued[ZIO_PRIORITY_NUM_QUEUEABLE];
wmsum_t vqs_io_active;
wmsum_t vqs_io_class_active[ZIO_PRIORITY_NUM_QUEUEABLE];
/* counters (inc only, since queue creation ) */
wmsum_t vqs_io_enqueued_total;
wmsum_t vqs_io_class_enqueued_total[ZIO_PRIORITY_NUM_QUEUEABLE];
wmsum_t vqs_io_dequeued_total;
wmsum_t vqs_io_class_dequeued_total[ZIO_PRIORITY_NUM_QUEUEABLE];
wmsum_t vqs_io_aggregated_total;
wmsum_t vqs_io_aggregated_data_total;
wmsum_t vqs_io_aggregated_read_gap_total;
wmsum_t vqs_io_aggregated_write_gap_total;
wmsum_t vqs_io_aggregated_shrunk_total;
} vdev_queue_sums_t;
struct vdev_queue {
vdev_t *vq_vdev;
vdev_queue_class_t vq_class[ZIO_PRIORITY_NUM_QUEUEABLE];
@ -155,6 +176,8 @@ struct vdev_queue {
hrtime_t vq_io_delta_ts;
zio_t vq_io_search; /* used as local for stack reduction */
kmutex_t vq_lock;
vdev_queue_sums_t vq_sums;
kstat_t *vq_ksp;
};
typedef enum vdev_alloc_bias {

85
module/os/freebsd/spl/spl_kstat.c
View File

@ -27,6 +27,10 @@
* [1] https://illumos.org/man/1M/kstat
* [2] https://illumos.org/man/9f/kstat_create
*/
/*
* Copyright (c) 2024, Klara, Inc.
* Copyright (c) 2024, Syneto
*/
#include <sys/types.h>
#include <sys/param.h>
@ -287,7 +291,7 @@ __kstat_create(const char *module, int instance, const char *name,
char buf[KSTAT_STRLEN];
struct sysctl_oid *root;
kstat_t *ksp;
char *pool;
char *p, *frag;
KASSERT(instance == 0, ("instance=%d", instance));
if ((ks_type == KSTAT_TYPE_INTR) || (ks_type == KSTAT_TYPE_IO))
@ -345,74 +349,54 @@ __kstat_create(const char *module, int instance, const char *name,
else
ksp->ks_data = kmem_zalloc(ksp->ks_data_size, KM_SLEEP);
/*
* Some kstats use a module name like "zfs/poolname" to distinguish a
* set of kstats belonging to a specific pool. Split on '/' to add an
* extra node for the pool name if needed.
*/
sysctl_ctx_init(&ksp->ks_sysctl_ctx);
(void) strlcpy(buf, module, KSTAT_STRLEN);
module = buf;
pool = strchr(module, '/');
if (pool != NULL)
*pool++ = '\0';
/*
* Create sysctl tree for those statistics:
*
* kstat.<module>[.<pool>].<class>.<name>
* Walk over the module name, splitting on '/', and create the
* intermediate nodes.
*/
sysctl_ctx_init(&ksp->ks_sysctl_ctx);
root = SYSCTL_ADD_NODE(&ksp->ks_sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_kstat), OID_AUTO, module, CTLFLAG_RW, 0,
"");
root = NULL;
p = buf;
while ((frag = strsep(&p, "/")) != NULL) {
root = SYSCTL_ADD_NODE(&ksp->ks_sysctl_ctx, root ?
SYSCTL_CHILDREN(root) : SYSCTL_STATIC_CHILDREN(_kstat),
OID_AUTO, frag, CTLFLAG_RW, 0, "");
if (root == NULL) {
printf("%s: Cannot create kstat.%s tree!\n", __func__, module);
sysctl_ctx_free(&ksp->ks_sysctl_ctx);
free(ksp, M_KSTAT);
return (NULL);
}
if (pool != NULL) {
root = SYSCTL_ADD_NODE(&ksp->ks_sysctl_ctx,
SYSCTL_CHILDREN(root), OID_AUTO, pool, CTLFLAG_RW, 0, "");
if (root == NULL) {
printf("%s: Cannot create kstat.%s.%s tree!\n",
__func__, module, pool);
printf("%s: Cannot create kstat.%s tree!\n",
__func__, buf);
sysctl_ctx_free(&ksp->ks_sysctl_ctx);
free(ksp, M_KSTAT);
return (NULL);
}
if (p != NULL && p > frag)
p[-1] = '.';
}
root = SYSCTL_ADD_NODE(&ksp->ks_sysctl_ctx, SYSCTL_CHILDREN(root),
OID_AUTO, class, CTLFLAG_RW, 0, "");
if (root == NULL) {
if (pool != NULL)
printf("%s: Cannot create kstat.%s.%s.%s tree!\n",
__func__, module, pool, class);
else
printf("%s: Cannot create kstat.%s.%s tree!\n",
__func__, module, class);
__func__, buf, class);
sysctl_ctx_free(&ksp->ks_sysctl_ctx);
free(ksp, M_KSTAT);
return (NULL);
}
if (ksp->ks_type == KSTAT_TYPE_NAMED) {
root = SYSCTL_ADD_NODE(&ksp->ks_sysctl_ctx,
SYSCTL_CHILDREN(root),
OID_AUTO, name, CTLFLAG_RW, 0, "");
if (root == NULL) {
if (pool != NULL)
printf("%s: Cannot create kstat.%s.%s.%s.%s "
"tree!\n", __func__, module, pool, class,
name);
else
printf("%s: Cannot create kstat.%s.%s.%s "
"tree!\n", __func__, module, class, name);
printf("%s: Cannot create kstat.%s.%s.%s tree!\n",
__func__, buf, class, name);
sysctl_ctx_free(&ksp->ks_sysctl_ctx);
free(ksp, M_KSTAT);
return (NULL);
}
}
ksp->ks_sysctl_root = root;
return (ksp);
@ -436,7 +420,26 @@ kstat_install_named(kstat_t *ksp)
if (ksent->data_type != 0) {
typelast = ksent->data_type;
namelast = ksent->name;
/*
* If a sysctl with this name already exists on this on
* this root, first remove it by deleting it from its
* old context, and then destroying it.
*/
struct sysctl_oid *oid = NULL;
SYSCTL_FOREACH(oid,
SYSCTL_CHILDREN(ksp->ks_sysctl_root)) {
if (strcmp(oid->oid_name, namelast) == 0) {
kstat_t *oldksp =
(kstat_t *)oid->oid_arg1;
sysctl_ctx_entry_del(
&oldksp->ks_sysctl_ctx, oid);
sysctl_remove_oid(oid, 1, 0);
break;
}
}
}
switch (typelast) {
case KSTAT_DATA_CHAR:
/* Not Implemented */

101
module/os/linux/spl/spl-kstat.c
View File

@ -26,6 +26,10 @@
* [1] https://illumos.org/man/1M/kstat
* [2] https://illumos.org/man/9f/kstat_create
*/
/*
* Copyright (c) 2024, Klara, Inc.
* Copyright (c) 2024, Syneto
*/
#include <linux/seq_file.h>
#include <sys/kstat.h>
@ -379,33 +383,72 @@ kstat_find_module(char *name)
return (NULL);
}
static kstat_module_t *
kstat_create_module(char *name)
{
kstat_module_t *module;
struct proc_dir_entry *pde;
pde = proc_mkdir(name, proc_spl_kstat);
if (pde == NULL)
return (NULL);
module = kmem_alloc(sizeof (kstat_module_t), KM_SLEEP);
module->ksm_proc = pde;
strlcpy(module->ksm_name, name, KSTAT_STRLEN);
INIT_LIST_HEAD(&module->ksm_kstat_list);
list_add_tail(&module->ksm_module_list, &kstat_module_list);
return (module);
}
static void
kstat_delete_module(kstat_module_t *module)
{
ASSERT(list_empty(&module->ksm_kstat_list));
remove_proc_entry(module->ksm_name, proc_spl_kstat);
ASSERT0(module->ksm_nchildren);
kstat_module_t *parent = module->ksm_parent;
char *p = module->ksm_name, *frag;
while (p != NULL && (frag = strsep(&p, "/"))) {}
remove_proc_entry(frag, parent ? parent->ksm_proc : proc_spl_kstat);
list_del(&module->ksm_module_list);
kmem_free(module, sizeof (kstat_module_t));
if (parent) {
parent->ksm_nchildren--;
if (parent->ksm_nchildren == 0 &&
list_empty(&parent->ksm_kstat_list))
kstat_delete_module(parent);
}
}
static kstat_module_t *
kstat_create_module(char *name)
{
char buf[KSTAT_STRLEN];
kstat_module_t *module, *parent;
(void) strlcpy(buf, name, KSTAT_STRLEN);
parent = NULL;
char *p = buf, *frag;
while ((frag = strsep(&p, "/")) != NULL) {
module = kstat_find_module(buf);
if (module == NULL) {
struct proc_dir_entry *pde = proc_mkdir(frag,
parent ? parent->ksm_proc : proc_spl_kstat);
if (pde == NULL) {
cmn_err(CE_WARN, "kstat_create('%s'): "
"module dir create failed", buf);
if (parent)
kstat_delete_module(parent);
return (NULL);
}
module = kmem_alloc(sizeof (kstat_module_t), KM_SLEEP);
module->ksm_proc = pde;
strlcpy(module->ksm_name, buf, KSTAT_STRLEN);
INIT_LIST_HEAD(&module->ksm_kstat_list);
list_add_tail(&module->ksm_module_list,
&kstat_module_list);
if (parent != NULL) {
module->ksm_parent = parent;
parent->ksm_nchildren++;
}
}
parent = module;
if (p != NULL && p > frag)
p[-1] = '/';
}
return (module);
}
static int
@ -624,12 +667,20 @@ kstat_proc_entry_install(kstat_proc_entry_t *kpep, mode_t mode,
}
/*
* Only one entry by this name per-module, on failure the module
* shouldn't be deleted because we know it has at least one entry.
* We can only have one entry of this name per module. If one already
* exists, replace it by first removing the proc entry, then removing
* it from the list. The kstat itself lives on; it just can't be
* inspected through the filesystem.
*/
list_for_each_entry(tmp, &module->ksm_kstat_list, kpe_list) {
if (strncmp(tmp->kpe_name, kpep->kpe_name, KSTAT_STRLEN) == 0)
goto out;
if (tmp->kpe_proc != NULL &&
strncmp(tmp->kpe_name, kpep->kpe_name, KSTAT_STRLEN) == 0) {
ASSERT3P(tmp->kpe_owner, ==, module);
remove_proc_entry(tmp->kpe_name, module->ksm_proc);
tmp->kpe_proc = NULL;
list_del_init(&tmp->kpe_list);
break;
}
}
list_add_tail(&kpep->kpe_list, &module->ksm_kstat_list);

244
module/zfs/vdev_queue.c
View File

@ -25,6 +25,8 @@
/*
* Copyright (c) 2012, 2018 by Delphix. All rights reserved.
* Copyright (c) 2024, Klara, Inc.
* Copyright (c) 2024, Syneto
*/
#include <sys/zfs_context.h>
@ -228,6 +230,81 @@ uint_t zfs_vdev_queue_depth_pct = 300;
*/
uint_t zfs_vdev_def_queue_depth = 32;
typedef struct vdev_queue_kstats {
kstat_named_t vqks_io_queued;
kstat_named_t vqks_io_class_queued[ZIO_PRIORITY_NUM_QUEUEABLE];
kstat_named_t vqks_io_active;
kstat_named_t vqks_io_class_active[ZIO_PRIORITY_NUM_QUEUEABLE];
kstat_named_t vqks_io_enqueued_total;
kstat_named_t vqks_io_class_enqueued_total[ZIO_PRIORITY_NUM_QUEUEABLE];
kstat_named_t vqks_io_dequeued_total;
kstat_named_t vqks_io_class_dequeued_total[ZIO_PRIORITY_NUM_QUEUEABLE];
kstat_named_t vqks_io_aggregated_total;
kstat_named_t vqks_io_aggregated_data_total;
kstat_named_t vqks_io_aggregated_read_gap_total;
kstat_named_t vqks_io_aggregated_write_gap_total;
kstat_named_t vqks_io_aggregated_shrunk_total;
} vdev_queue_kstats_t;
static vdev_queue_kstats_t vdev_queue_kstats_template = {
{ "io_queued", KSTAT_DATA_UINT64 },
{
{ "io_syncread_queued", KSTAT_DATA_UINT64 },
{ "io_syncwrite_queued", KSTAT_DATA_UINT64 },
{ "io_asyncread_queued", KSTAT_DATA_UINT64 },
{ "io_asyncwrite_queued", KSTAT_DATA_UINT64 },
{ "io_scrub_queued", KSTAT_DATA_UINT64 },
{ "io_removal_queued", KSTAT_DATA_UINT64 },
{ "io_initializing_queued", KSTAT_DATA_UINT64 },
{ "io_trim_queued", KSTAT_DATA_UINT64 },
{ "io_rebuild_queued", KSTAT_DATA_UINT64 },
},
{ "io_active", KSTAT_DATA_UINT64 },
{
{ "io_syncread_active", KSTAT_DATA_UINT64 },
{ "io_syncwrite_active", KSTAT_DATA_UINT64 },
{ "io_asyncread_active", KSTAT_DATA_UINT64 },
{ "io_asyncwrite_active", KSTAT_DATA_UINT64 },
{ "io_scrub_active", KSTAT_DATA_UINT64 },
{ "io_removal_active", KSTAT_DATA_UINT64 },
{ "io_initializing_active", KSTAT_DATA_UINT64 },
{ "io_trim_active", KSTAT_DATA_UINT64 },
{ "io_rebuild_active", KSTAT_DATA_UINT64 },
},
{ "io_enqueued_total", KSTAT_DATA_UINT64 },
{
{ "io_syncread_enqueued_total", KSTAT_DATA_UINT64 },
{ "io_syncwrite_enqueued_total", KSTAT_DATA_UINT64 },
{ "io_asyncread_enqueued_total", KSTAT_DATA_UINT64 },
{ "io_asyncwrite_enqueued_total", KSTAT_DATA_UINT64 },
{ "io_scrub_enqueued_total", KSTAT_DATA_UINT64 },
{ "io_removal_enqueued_total", KSTAT_DATA_UINT64 },
{ "io_initializing_enqueued_total", KSTAT_DATA_UINT64 },
{ "io_trim_enqueued_total", KSTAT_DATA_UINT64 },
{ "io_rebuild_enqueued_total", KSTAT_DATA_UINT64 },
},
{ "io_dequeued_total", KSTAT_DATA_UINT64 },
{
{ "io_syncread_dequeued_total", KSTAT_DATA_UINT64 },
{ "io_syncwrite_dequeued_total", KSTAT_DATA_UINT64 },
{ "io_asyncread_dequeued_total", KSTAT_DATA_UINT64 },
{ "io_asyncwrite_dequeued_total", KSTAT_DATA_UINT64 },
{ "io_scrub_dequeued_total", KSTAT_DATA_UINT64 },
{ "io_removal_dequeued_total", KSTAT_DATA_UINT64 },
{ "io_initializing_dequeued_total", KSTAT_DATA_UINT64 },
{ "io_trim_dequeued_total", KSTAT_DATA_UINT64 },
{ "io_rebuild_dequeued_total", KSTAT_DATA_UINT64 },
},
{ "io_aggregated_total", KSTAT_DATA_UINT64 },
{ "io_aggregated_data_total", KSTAT_DATA_UINT64 },
{ "io_aggregated_read_gap_total", KSTAT_DATA_UINT64 },
{ "io_aggregated_write_gap_total", KSTAT_DATA_UINT64 },
{ "io_aggregated_shrunk_total", KSTAT_DATA_UINT64 },
};
#define VQSTAT_INC(vq, stat) wmsum_add(&vq->vq_sums.vqs_##stat, 1)
#define VQSTAT_DEC(vq, stat) wmsum_add(&vq->vq_sums.vqs_##stat, -1)
static int
vdev_queue_offset_compare(const void *x1, const void *x2)
{
@ -279,6 +356,10 @@ vdev_queue_class_add(vdev_queue_t *vq, zio_t *zio)
}
else
avl_add(&vq->vq_class[p].vqc_tree, zio);
VQSTAT_INC(vq, io_queued);
VQSTAT_INC(vq, io_class_queued[p]);
VQSTAT_INC(vq, io_enqueued_total);
VQSTAT_INC(vq, io_class_enqueued_total[p]);
}
static void
@ -297,6 +378,10 @@ vdev_queue_class_remove(vdev_queue_t *vq, zio_t *zio)
empty = avl_is_empty(tree);
}
vq->vq_cqueued &= ~(empty << p);
VQSTAT_DEC(vq, io_queued);
VQSTAT_DEC(vq, io_class_queued[p]);
VQSTAT_INC(vq, io_dequeued_total);
VQSTAT_INC(vq, io_class_dequeued_total[p]);
}
static uint_t
@ -472,6 +557,129 @@ found:
return (p);
}
static void
vdev_queue_sums_init(vdev_queue_t *vq)
{
vdev_queue_sums_t *vqs = &vq->vq_sums;
wmsum_init(&vqs->vqs_io_queued, 0);
wmsum_init(&vqs->vqs_io_active, 0);
wmsum_init(&vqs->vqs_io_enqueued_total, 0);
wmsum_init(&vqs->vqs_io_dequeued_total, 0);
wmsum_init(&vqs->vqs_io_aggregated_total, 0);
wmsum_init(&vqs->vqs_io_aggregated_data_total, 0);
wmsum_init(&vqs->vqs_io_aggregated_read_gap_total, 0);
wmsum_init(&vqs->vqs_io_aggregated_write_gap_total, 0);
wmsum_init(&vqs->vqs_io_aggregated_shrunk_total, 0);
for (int i = 0; i < ZIO_PRIORITY_NUM_QUEUEABLE; i++) {
wmsum_init(&vqs->vqs_io_class_queued[i], 0);
wmsum_init(&vqs->vqs_io_class_active[i], 0);
wmsum_init(&vqs->vqs_io_class_enqueued_total[i], 0);
wmsum_init(&vqs->vqs_io_class_dequeued_total[i], 0);
}
}
static void
vdev_queue_sums_fini(vdev_queue_t *vq)
{
vdev_queue_sums_t *vqs = &vq->vq_sums;
wmsum_fini(&vqs->vqs_io_queued);
wmsum_fini(&vqs->vqs_io_active);
wmsum_fini(&vqs->vqs_io_enqueued_total);
wmsum_fini(&vqs->vqs_io_dequeued_total);
wmsum_fini(&vqs->vqs_io_aggregated_total);
wmsum_fini(&vqs->vqs_io_aggregated_data_total);
wmsum_fini(&vqs->vqs_io_aggregated_read_gap_total);
wmsum_fini(&vqs->vqs_io_aggregated_write_gap_total);
wmsum_fini(&vqs->vqs_io_aggregated_shrunk_total);
for (int i = 0; i < ZIO_PRIORITY_NUM_QUEUEABLE; i++) {
wmsum_fini(&vqs->vqs_io_class_queued[i]);
wmsum_fini(&vqs->vqs_io_class_active[i]);
wmsum_fini(&vqs->vqs_io_class_enqueued_total[i]);
wmsum_fini(&vqs->vqs_io_class_dequeued_total[i]);
}
}
static int
vdev_queue_kstats_update(kstat_t *ksp, int rw)
{
if (rw == KSTAT_WRITE)
return (EACCES);
vdev_queue_t *vq = ksp->ks_private;
vdev_queue_kstats_t *vqks = ksp->ks_data;
vdev_queue_sums_t *vqs = &vq->vq_sums;
vqks->vqks_io_queued.value.ui64 =
wmsum_value(&vqs->vqs_io_queued);
vqks->vqks_io_active.value.ui64 =
wmsum_value(&vqs->vqs_io_active);
vqks->vqks_io_enqueued_total.value.ui64 =
wmsum_value(&vqs->vqs_io_enqueued_total);
vqks->vqks_io_dequeued_total.value.ui64 =
wmsum_value(&vqs->vqs_io_dequeued_total);
vqks->vqks_io_aggregated_total.value.ui64 =
wmsum_value(&vqs->vqs_io_aggregated_total);
vqks->vqks_io_aggregated_data_total.value.ui64 =
wmsum_value(&vqs->vqs_io_aggregated_data_total);
vqks->vqks_io_aggregated_read_gap_total.value.ui64 =
wmsum_value(&vqs->vqs_io_aggregated_read_gap_total);
vqks->vqks_io_aggregated_write_gap_total.value.ui64 =
wmsum_value(&vqs->vqs_io_aggregated_write_gap_total);
vqks->vqks_io_aggregated_shrunk_total.value.ui64 =
wmsum_value(&vqs->vqs_io_aggregated_shrunk_total);
for (int i = 0; i < ZIO_PRIORITY_NUM_QUEUEABLE; i++) {
vqks->vqks_io_class_queued[i].value.ui64 =
wmsum_value(&vqs->vqs_io_class_queued[i]);
vqks->vqks_io_class_active[i].value.ui64 =
wmsum_value(&vqs->vqs_io_class_active[i]);
vqks->vqks_io_class_enqueued_total[i].value.ui64 =
wmsum_value(&vqs->vqs_io_class_enqueued_total[i]);
vqks->vqks_io_class_dequeued_total[i].value.ui64 =
wmsum_value(&vqs->vqs_io_class_dequeued_total[i]);
}
return (0);
}
static void
vdev_queue_kstats_init(vdev_queue_t *vq)
{
char *module =
kmem_asprintf("zfs/%s/vdev/%llu", spa_name(vq->vq_vdev->vdev_spa),
(u_longlong_t)vq->vq_vdev->vdev_guid);
kstat_t *ksp = kstat_create(module, 0, "queue", "misc",
KSTAT_TYPE_NAMED,
sizeof (vdev_queue_kstats_t) / sizeof (kstat_named_t),
KSTAT_FLAG_VIRTUAL);
kmem_strfree(module);
if (ksp == NULL)
return;
ksp->ks_private = vq;
ksp->ks_update = vdev_queue_kstats_update;
ksp->ks_data = kmem_alloc(sizeof (vdev_queue_kstats_t), KM_SLEEP);
memcpy(ksp->ks_data, &vdev_queue_kstats_template,
sizeof (vdev_queue_kstats_t));
kstat_install(ksp);
vq->vq_ksp = ksp;
}
static void
vdev_queue_kstats_fini(vdev_queue_t *vq)
{
if (vq->vq_ksp == NULL)
return;
kmem_free(vq->vq_ksp->ks_data, sizeof (vdev_queue_kstats_t));
kstat_delete(vq->vq_ksp);
vq->vq_ksp = NULL;
}
void
vdev_queue_init(vdev_t *vd)
{
@ -502,6 +710,19 @@ vdev_queue_init(vdev_t *vd)
list_create(&vq->vq_active_list, sizeof (struct zio),
offsetof(struct zio, io_queue_node.l));
mutex_init(&vq->vq_lock, NULL, MUTEX_DEFAULT, NULL);
vdev_queue_sums_init(vq);
/*
* IO for interior vdevs and distributed spares never go through the
* queue, so do not create kstat nodes for them.
* See zio_vdev_io_start().
*/
if (spa_load_state(vd->vdev_spa) != SPA_LOAD_TRYIMPORT &&
vd->vdev_ops->vdev_op_leaf &&
vd->vdev_ops != &vdev_draid_spare_ops) {
vdev_queue_kstats_init(vq);
}
}
void
@ -509,6 +730,9 @@ vdev_queue_fini(vdev_t *vd)
{
vdev_queue_t *vq = &vd->vdev_queue;
vdev_queue_kstats_fini(vq);
vdev_queue_sums_fini(vq);
for (zio_priority_t p = 0; p < ZIO_PRIORITY_NUM_QUEUEABLE; p++) {
if (vdev_queue_class_fifo(p))
list_destroy(&vq->vq_class[p].vqc_list);
@ -563,9 +787,12 @@ vdev_queue_pending_add(vdev_queue_t *vq, zio_t *zio)
{
ASSERT(MUTEX_HELD(&vq->vq_lock));
ASSERT3U(zio->io_priority, <, ZIO_PRIORITY_NUM_QUEUEABLE);
vq->vq_cactive[zio->io_priority]++;
zio_priority_t p = zio->io_priority;
vq->vq_cactive[p]++;
vq->vq_active++;
if (vdev_queue_is_interactive(zio->io_priority)) {
VQSTAT_INC(vq, io_active);
VQSTAT_INC(vq, io_class_active[p]);
if (vdev_queue_is_interactive(p)) {
if (++vq->vq_ia_active == 1)
vq->vq_nia_credit = 1;
} else if (vq->vq_ia_active > 0) {
@ -580,9 +807,12 @@ vdev_queue_pending_remove(vdev_queue_t *vq, zio_t *zio)
{
ASSERT(MUTEX_HELD(&vq->vq_lock));
ASSERT3U(zio->io_priority, <, ZIO_PRIORITY_NUM_QUEUEABLE);
vq->vq_cactive[zio->io_priority]--;
zio_priority_t p = zio->io_priority;
vq->vq_cactive[p]--;
vq->vq_active--;
if (vdev_queue_is_interactive(zio->io_priority)) {
VQSTAT_DEC(vq, io_active);
VQSTAT_DEC(vq, io_class_active[p]);
if (vdev_queue_is_interactive(p)) {
if (--vq->vq_ia_active == 0)
vq->vq_nia_credit = 0;
else
@ -777,6 +1007,8 @@ vdev_queue_aggregate(vdev_queue_t *vq, zio_t *zio)
flags | ZIO_FLAG_DONT_QUEUE, vdev_queue_agg_io_done, NULL);
aio->io_timestamp = first->io_timestamp;
VQSTAT_INC(vq, io_aggregated_total);
nio = first;
next_offset = first->io_offset;
do {
@ -785,6 +1017,7 @@ vdev_queue_aggregate(vdev_queue_t *vq, zio_t *zio)
ASSERT3P(dio, !=, NULL);
zio_add_child(dio, aio);
vdev_queue_io_remove(vq, dio);
VQSTAT_INC(vq, io_aggregated_data_total);
if (dio->io_offset != next_offset) {
/* allocate a buffer for a read gap */
@ -793,6 +1026,7 @@ vdev_queue_aggregate(vdev_queue_t *vq, zio_t *zio)
abd = abd_alloc_for_io(
dio->io_offset - next_offset, B_TRUE);
abd_gang_add(aio->io_abd, abd, B_TRUE);
VQSTAT_INC(vq, io_aggregated_read_gap_total);
}
if (dio->io_abd &&
(dio->io_size != abd_get_size(dio->io_abd))) {
@ -800,6 +1034,7 @@ vdev_queue_aggregate(vdev_queue_t *vq, zio_t *zio)
ASSERT3U(abd_get_size(dio->io_abd), >, dio->io_size);
abd = abd_get_offset_size(dio->io_abd, 0, dio->io_size);
abd_gang_add(aio->io_abd, abd, B_TRUE);
VQSTAT_INC(vq, io_aggregated_shrunk_total);
} else {
if (dio->io_flags & ZIO_FLAG_NODATA) {
/* allocate a buffer for a write gap */
@ -807,6 +1042,7 @@ vdev_queue_aggregate(vdev_queue_t *vq, zio_t *zio)
ASSERT3P(dio->io_abd, ==, NULL);
abd_gang_add(aio->io_abd,
abd_get_zeros(dio->io_size), B_TRUE);
VQSTAT_INC(vq, io_aggregated_write_gap_total);
} else {
/*
* We pass B_FALSE to abd_gang_add()