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Merge commit 'refs/top-bases/linux-zpios' into linux-zpios

This commit is contained in:
Brian Behlendorf 2010-06-14 16:28:36 -07:00
parent 3877ce40fa 08060ef853
commit a1a41b3235
6 changed files with 463 additions and 240 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

217
cmd/ztest/ztest.c
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@ -57,6 +57,9 @@
* the transaction group number is less than the current, open txg. * the transaction group number is less than the current, open txg.
* If you add a new test, please do this if applicable. * If you add a new test, please do this if applicable.
* *
* (7) Threads are created with a reduced stack size, for sanity checking.
* Therefore, it's important not to allocate huge buffers on the stack.
*
* When run with no arguments, ztest runs for about five minutes and * When run with no arguments, ztest runs for about five minutes and
* produces no output if successful. To get a little bit of information, * produces no output if successful. To get a little bit of information,
* specify -V. To get more information, specify -VV, and so on. * specify -V. To get more information, specify -VV, and so on.
@ -168,8 +171,8 @@ typedef enum {
typedef struct rll { typedef struct rll {
void *rll_writer; void *rll_writer;
int rll_readers; int rll_readers;
mutex_t rll_lock; kmutex_t rll_lock;
cond_t rll_cv; kcondvar_t rll_cv;
} rll_t; } rll_t;
typedef struct rl { typedef struct rl {
@ -206,7 +209,7 @@ typedef struct ztest_ds {
uint64_t zd_seq; uint64_t zd_seq;
ztest_od_t *zd_od; /* debugging aid */ ztest_od_t *zd_od; /* debugging aid */
char zd_name[MAXNAMELEN]; char zd_name[MAXNAMELEN];
mutex_t zd_dirobj_lock; kmutex_t zd_dirobj_lock;
rll_t zd_object_lock[ZTEST_OBJECT_LOCKS]; rll_t zd_object_lock[ZTEST_OBJECT_LOCKS];
rll_t zd_range_lock[ZTEST_RANGE_LOCKS]; rll_t zd_range_lock[ZTEST_RANGE_LOCKS];
} ztest_ds_t; } ztest_ds_t;
@ -299,7 +302,7 @@ ztest_info_t ztest_info[] = {
* The callbacks are ordered by txg number. * The callbacks are ordered by txg number.
*/ */
typedef struct ztest_cb_list { typedef struct ztest_cb_list {
mutex_t zcl_callbacks_lock; kmutex_t zcl_callbacks_lock;
list_t zcl_callbacks; list_t zcl_callbacks;
} ztest_cb_list_t; } ztest_cb_list_t;
@ -319,8 +322,8 @@ typedef struct ztest_shared {
uint64_t zs_vdev_aux; uint64_t zs_vdev_aux;
uint64_t zs_alloc; uint64_t zs_alloc;
uint64_t zs_space; uint64_t zs_space;
mutex_t zs_vdev_lock; kmutex_t zs_vdev_lock;
rwlock_t zs_name_lock; krwlock_t zs_name_lock;
ztest_info_t zs_info[ZTEST_FUNCS]; ztest_info_t zs_info[ZTEST_FUNCS];
uint64_t zs_splits; uint64_t zs_splits;
uint64_t zs_mirrors; uint64_t zs_mirrors;
@ -876,8 +879,8 @@ ztest_rll_init(rll_t *rll)
{ {
rll->rll_writer = NULL; rll->rll_writer = NULL;
rll->rll_readers = 0; rll->rll_readers = 0;
VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0); mutex_init(&rll->rll_lock, NULL, MUTEX_DEFAULT, NULL);
VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0); cv_init(&rll->rll_cv, NULL, CV_DEFAULT, NULL);
} }
static void static void
@ -885,32 +888,32 @@ ztest_rll_destroy(rll_t *rll)
{ {
ASSERT(rll->rll_writer == NULL); ASSERT(rll->rll_writer == NULL);
ASSERT(rll->rll_readers == 0); ASSERT(rll->rll_readers == 0);
VERIFY(_mutex_destroy(&rll->rll_lock) == 0); mutex_destroy(&rll->rll_lock);
VERIFY(cond_destroy(&rll->rll_cv) == 0); cv_destroy(&rll->rll_cv);
} }
static void static void
ztest_rll_lock(rll_t *rll, rl_type_t type) ztest_rll_lock(rll_t *rll, rl_type_t type)
{ {
VERIFY(mutex_lock(&rll->rll_lock) == 0); mutex_enter(&rll->rll_lock);
if (type == RL_READER) { if (type == RL_READER) {
while (rll->rll_writer != NULL) while (rll->rll_writer != NULL)
(void) cond_wait(&rll->rll_cv, &rll->rll_lock); (void) cv_wait(&rll->rll_cv, &rll->rll_lock);
rll->rll_readers++; rll->rll_readers++;
} else { } else {
while (rll->rll_writer != NULL || rll->rll_readers) while (rll->rll_writer != NULL || rll->rll_readers)
(void) cond_wait(&rll->rll_cv, &rll->rll_lock); (void) cv_wait(&rll->rll_cv, &rll->rll_lock);
rll->rll_writer = curthread; rll->rll_writer = curthread;
} }
VERIFY(mutex_unlock(&rll->rll_lock) == 0); mutex_exit(&rll->rll_lock);
} }
static void static void
ztest_rll_unlock(rll_t *rll) ztest_rll_unlock(rll_t *rll)
{ {
VERIFY(mutex_lock(&rll->rll_lock) == 0); mutex_enter(&rll->rll_lock);
if (rll->rll_writer) { if (rll->rll_writer) {
ASSERT(rll->rll_readers == 0); ASSERT(rll->rll_readers == 0);
@ -922,9 +925,9 @@ ztest_rll_unlock(rll_t *rll)
} }
if (rll->rll_writer == NULL && rll->rll_readers == 0) if (rll->rll_writer == NULL && rll->rll_readers == 0)
VERIFY(cond_broadcast(&rll->rll_cv) == 0); cv_broadcast(&rll->rll_cv);
VERIFY(mutex_unlock(&rll->rll_lock) == 0); mutex_exit(&rll->rll_lock);
} }
static void static void
@ -981,7 +984,7 @@ ztest_zd_init(ztest_ds_t *zd, objset_t *os)
dmu_objset_name(os, zd->zd_name); dmu_objset_name(os, zd->zd_name);
int l; int l;
VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0); mutex_init(&zd->zd_dirobj_lock, NULL, MUTEX_DEFAULT, NULL);
for (l = 0; l < ZTEST_OBJECT_LOCKS; l++) for (l = 0; l < ZTEST_OBJECT_LOCKS; l++)
ztest_rll_init(&zd->zd_object_lock[l]); ztest_rll_init(&zd->zd_object_lock[l]);
@ -995,7 +998,7 @@ ztest_zd_fini(ztest_ds_t *zd)
{ {
int l; int l;
VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0); mutex_destroy(&zd->zd_dirobj_lock);
for (l = 0; l < ZTEST_OBJECT_LOCKS; l++) for (l = 0; l < ZTEST_OBJECT_LOCKS; l++)
ztest_rll_destroy(&zd->zd_object_lock[l]); ztest_rll_destroy(&zd->zd_object_lock[l]);
@ -1733,7 +1736,7 @@ ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
int error; int error;
int i; int i;
ASSERT(_mutex_held(&zd->zd_dirobj_lock)); ASSERT(mutex_held(&zd->zd_dirobj_lock));
for (i = 0; i < count; i++, od++) { for (i = 0; i < count; i++, od++) {
od->od_object = 0; od->od_object = 0;
@ -1774,7 +1777,7 @@ ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
int missing = 0; int missing = 0;
int i; int i;
ASSERT(_mutex_held(&zd->zd_dirobj_lock)); ASSERT(mutex_held(&zd->zd_dirobj_lock));
for (i = 0; i < count; i++, od++) { for (i = 0; i < count; i++, od++) {
if (missing) { if (missing) {
@ -1820,7 +1823,7 @@ ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
int error; int error;
int i; int i;
ASSERT(_mutex_held(&zd->zd_dirobj_lock)); ASSERT(mutex_held(&zd->zd_dirobj_lock));
od += count - 1; od += count - 1;
@ -2036,13 +2039,13 @@ ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
int count = size / sizeof (*od); int count = size / sizeof (*od);
int rv = 0; int rv = 0;
VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0); mutex_enter(&zd->zd_dirobj_lock);
if ((ztest_lookup(zd, od, count) != 0 || remove) && if ((ztest_lookup(zd, od, count) != 0 || remove) &&
(ztest_remove(zd, od, count) != 0 || (ztest_remove(zd, od, count) != 0 ||
ztest_create(zd, od, count) != 0)) ztest_create(zd, od, count) != 0))
rv = -1; rv = -1;
zd->zd_od = od; zd->zd_od = od;
VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0); mutex_exit(&zd->zd_dirobj_lock);
return (rv); return (rv);
} }
@ -2098,7 +2101,7 @@ ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
* Attempt to create an existing pool. It shouldn't matter * Attempt to create an existing pool. It shouldn't matter
* what's in the nvroot; we should fail with EEXIST. * what's in the nvroot; we should fail with EEXIST.
*/ */
(void) rw_rdlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_READER);
nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 0, 1); nvroot = make_vdev_root("/dev/bogus", NULL, 0, 0, 0, 0, 0, 1);
VERIFY3U(EEXIST, ==, spa_create(zs->zs_pool, nvroot, NULL, NULL, NULL)); VERIFY3U(EEXIST, ==, spa_create(zs->zs_pool, nvroot, NULL, NULL, NULL));
nvlist_free(nvroot); nvlist_free(nvroot);
@ -2106,7 +2109,7 @@ ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
VERIFY3U(EBUSY, ==, spa_destroy(zs->zs_pool)); VERIFY3U(EBUSY, ==, spa_destroy(zs->zs_pool));
spa_close(spa, FTAG); spa_close(spa, FTAG);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
} }
static vdev_t * static vdev_t *
@ -2160,7 +2163,7 @@ ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
nvlist_t *nvroot; nvlist_t *nvroot;
int error; int error;
VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0); mutex_enter(&zs->zs_vdev_lock);
leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * zopt_raidz; leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * zopt_raidz;
spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
@ -2186,9 +2189,9 @@ ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
* dmu_objset_destroy() to fail with EBUSY thus * dmu_objset_destroy() to fail with EBUSY thus
* leaving the dataset in an inconsistent state. * leaving the dataset in an inconsistent state.
*/ */
VERIFY(rw_wrlock(&ztest_shared->zs_name_lock) == 0); rw_enter(&ztest_shared->zs_name_lock, RW_WRITER);
error = spa_vdev_remove(spa, guid, B_FALSE); error = spa_vdev_remove(spa, guid, B_FALSE);
VERIFY(rw_unlock(&ztest_shared->zs_name_lock) == 0); rw_exit(&ztest_shared->zs_name_lock);
if (error && error != EEXIST) if (error && error != EEXIST)
fatal(0, "spa_vdev_remove() = %d", error); fatal(0, "spa_vdev_remove() = %d", error);
@ -2210,7 +2213,7 @@ ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
fatal(0, "spa_vdev_add() = %d", error); fatal(0, "spa_vdev_add() = %d", error);
} }
VERIFY(mutex_unlock(&ztest_shared->zs_vdev_lock) == 0); mutex_exit(&ztest_shared->zs_vdev_lock);
} }
/* /*
@ -2236,7 +2239,7 @@ ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
aux = ZPOOL_CONFIG_L2CACHE; aux = ZPOOL_CONFIG_L2CACHE;
} }
VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0); mutex_enter(&zs->zs_vdev_lock);
spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
@ -2292,7 +2295,7 @@ ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
fatal(0, "spa_vdev_remove(%llu) = %d", guid, error); fatal(0, "spa_vdev_remove(%llu) = %d", guid, error);
} }
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
} }
/* /*
@ -2309,11 +2312,11 @@ ztest_split_pool(ztest_ds_t *zd, uint64_t id)
uint_t c, children, schildren = 0, lastlogid = 0; uint_t c, children, schildren = 0, lastlogid = 0;
int error = 0; int error = 0;
VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0); mutex_enter(&zs->zs_vdev_lock);
/* ensure we have a useable config; mirrors of raidz aren't supported */ /* ensure we have a useable config; mirrors of raidz aren't supported */
if (zs->zs_mirrors < 3 || zopt_raidz > 1) { if (zs->zs_mirrors < 3 || zopt_raidz > 1) {
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
return; return;
} }
@ -2372,9 +2375,9 @@ ztest_split_pool(ztest_ds_t *zd, uint64_t id)
spa_config_exit(spa, SCL_VDEV, FTAG); spa_config_exit(spa, SCL_VDEV, FTAG);
(void) rw_wrlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_WRITER);
error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE); error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
nvlist_free(config); nvlist_free(config);
@ -2387,7 +2390,7 @@ ztest_split_pool(ztest_ds_t *zd, uint64_t id)
++zs->zs_splits; ++zs->zs_splits;
--zs->zs_mirrors; --zs->zs_mirrors;
} }
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
} }
@ -2416,7 +2419,7 @@ ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
int oldvd_is_log; int oldvd_is_log;
int error, expected_error; int error, expected_error;
VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0); mutex_enter(&zs->zs_vdev_lock);
leaves = MAX(zs->zs_mirrors, 1) * zopt_raidz; leaves = MAX(zs->zs_mirrors, 1) * zopt_raidz;
spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER); spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
@ -2477,7 +2480,7 @@ ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
if (error != 0 && error != ENODEV && error != EBUSY && if (error != 0 && error != ENODEV && error != EBUSY &&
error != ENOTSUP) error != ENOTSUP)
fatal(0, "detach (%s) returned %d", oldpath, error); fatal(0, "detach (%s) returned %d", oldpath, error);
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
return; return;
} }
@ -2570,7 +2573,7 @@ ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
(longlong_t)newsize, replacing, error, expected_error); (longlong_t)newsize, replacing, error, expected_error);
} }
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
} }
/* /*
@ -2701,7 +2704,7 @@ ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
uint64_t top; uint64_t top;
uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count; uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0); mutex_enter(&zs->zs_vdev_lock);
spa_config_enter(spa, SCL_STATE, spa, RW_READER); spa_config_enter(spa, SCL_STATE, spa, RW_READER);
top = ztest_random_vdev_top(spa, B_TRUE); top = ztest_random_vdev_top(spa, B_TRUE);
@ -2729,7 +2732,7 @@ ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
if (tvd->vdev_state != VDEV_STATE_HEALTHY || if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
psize == 0 || psize >= 4 * zopt_vdev_size) { psize == 0 || psize >= 4 * zopt_vdev_size) {
spa_config_exit(spa, SCL_STATE, spa); spa_config_exit(spa, SCL_STATE, spa);
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
return; return;
} }
ASSERT(psize > 0); ASSERT(psize > 0);
@ -2754,7 +2757,7 @@ ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
"the vdev configuration changed.\n"); "the vdev configuration changed.\n");
} }
spa_config_exit(spa, SCL_STATE, spa); spa_config_exit(spa, SCL_STATE, spa);
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
return; return;
} }
@ -2788,7 +2791,7 @@ ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
"intervening vdev offline or remove.\n"); "intervening vdev offline or remove.\n");
} }
spa_config_exit(spa, SCL_STATE, spa); spa_config_exit(spa, SCL_STATE, spa);
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
return; return;
} }
@ -2816,7 +2819,7 @@ ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
} }
spa_config_exit(spa, SCL_STATE, spa); spa_config_exit(spa, SCL_STATE, spa);
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
} }
/* /*
@ -2924,7 +2927,7 @@ ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
zilog_t *zilog; zilog_t *zilog;
int i; int i;
(void) rw_rdlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_READER);
(void) snprintf(name, MAXNAMELEN, "%s/temp_%llu", (void) snprintf(name, MAXNAMELEN, "%s/temp_%llu",
zs->zs_pool, (u_longlong_t)id); zs->zs_pool, (u_longlong_t)id);
@ -2962,7 +2965,7 @@ ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
if (error) { if (error) {
if (error == ENOSPC) { if (error == ENOSPC) {
ztest_record_enospc(FTAG); ztest_record_enospc(FTAG);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
return; return;
} }
fatal(0, "dmu_objset_create(%s) = %d", name, error); fatal(0, "dmu_objset_create(%s) = %d", name, error);
@ -3011,7 +3014,7 @@ ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
dmu_objset_disown(os, FTAG); dmu_objset_disown(os, FTAG);
ztest_zd_fini(&zdtmp); ztest_zd_fini(&zdtmp);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
} }
/* /*
@ -3022,10 +3025,10 @@ ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
{ {
ztest_shared_t *zs = ztest_shared; ztest_shared_t *zs = ztest_shared;
(void) rw_rdlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_READER);
(void) ztest_snapshot_destroy(zd->zd_name, id); (void) ztest_snapshot_destroy(zd->zd_name, id);
(void) ztest_snapshot_create(zd->zd_name, id); (void) ztest_snapshot_create(zd->zd_name, id);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
} }
/* /*
@ -3086,7 +3089,7 @@ ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
char *osname = zd->zd_name; char *osname = zd->zd_name;
int error; int error;
(void) rw_rdlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_READER);
ztest_dsl_dataset_cleanup(osname, id); ztest_dsl_dataset_cleanup(osname, id);
@ -3171,7 +3174,7 @@ ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
out: out:
ztest_dsl_dataset_cleanup(osname, id); ztest_dsl_dataset_cleanup(osname, id);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
} }
/* /*
@ -4094,9 +4097,9 @@ ztest_commit_callback(void *arg, int error)
ASSERT3U(data->zcd_txg, !=, 0); ASSERT3U(data->zcd_txg, !=, 0);
/* Remove our callback from the list */ /* Remove our callback from the list */
(void) mutex_lock(&zcl.zcl_callbacks_lock); (void) mutex_enter(&zcl.zcl_callbacks_lock);
list_remove(&zcl.zcl_callbacks, data); list_remove(&zcl.zcl_callbacks, data);
(void) mutex_unlock(&zcl.zcl_callbacks_lock); (void) mutex_exit(&zcl.zcl_callbacks_lock);
out: out:
umem_free(data, sizeof (ztest_cb_data_t)); umem_free(data, sizeof (ztest_cb_data_t));
@ -4112,6 +4115,7 @@ ztest_create_cb_data(objset_t *os, uint64_t txg)
cb_data->zcd_txg = txg; cb_data->zcd_txg = txg;
cb_data->zcd_spa = dmu_objset_spa(os); cb_data->zcd_spa = dmu_objset_spa(os);
list_link_init(&cb_data->zcd_node);
return (cb_data); return (cb_data);
} }
@ -4198,7 +4202,7 @@ ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx); dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx);
(void) mutex_lock(&zcl.zcl_callbacks_lock); (void) mutex_enter(&zcl.zcl_callbacks_lock);
/* /*
* Since commit callbacks don't have any ordering requirement and since * Since commit callbacks don't have any ordering requirement and since
@ -4245,7 +4249,7 @@ ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
tmp_cb = cb_data[i]; tmp_cb = cb_data[i];
} }
(void) mutex_unlock(&zcl.zcl_callbacks_lock); (void) mutex_exit(&zcl.zcl_callbacks_lock);
dmu_tx_commit(tx); dmu_tx_commit(tx);
} }
@ -4263,13 +4267,13 @@ ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
ztest_shared_t *zs = ztest_shared; ztest_shared_t *zs = ztest_shared;
int p; int p;
(void) rw_rdlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_READER);
for (p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++) for (p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++)
(void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p], (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2)); ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
} }
/* ARGSUSED */ /* ARGSUSED */
@ -4279,7 +4283,7 @@ ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
ztest_shared_t *zs = ztest_shared; ztest_shared_t *zs = ztest_shared;
nvlist_t *props = NULL; nvlist_t *props = NULL;
(void) rw_rdlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_READER);
(void) ztest_spa_prop_set_uint64(zs, ZPOOL_PROP_DEDUPDITTO, (void) ztest_spa_prop_set_uint64(zs, ZPOOL_PROP_DEDUPDITTO,
ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN)); ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN));
@ -4291,7 +4295,7 @@ ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
nvlist_free(props); nvlist_free(props);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
} }
/* /*
@ -4309,14 +4313,14 @@ ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
char tag[100]; char tag[100];
char osname[MAXNAMELEN]; char osname[MAXNAMELEN];
(void) rw_rdlock(&ztest_shared->zs_name_lock); (void) rw_enter(&ztest_shared->zs_name_lock, RW_READER);
dmu_objset_name(os, osname); dmu_objset_name(os, osname);
(void) snprintf(snapname, 100, "sh1_%llu", id); (void) snprintf(snapname, 100, "sh1_%llu", (u_longlong_t)id);
(void) snprintf(fullname, 100, "%s@%s", osname, snapname); (void) snprintf(fullname, 100, "%s@%s", osname, snapname);
(void) snprintf(clonename, 100, "%s/ch1_%llu", osname, id); (void) snprintf(clonename, 100, "%s/ch1_%llu",osname,(u_longlong_t)id);
(void) snprintf(tag, 100, "%tag_%llu", id); (void) snprintf(tag, 100, "tag_%llu", (u_longlong_t)id);
/* /*
* Clean up from any previous run. * Clean up from any previous run.
@ -4403,7 +4407,7 @@ ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
VERIFY(dmu_objset_hold(fullname, FTAG, &origin) == ENOENT); VERIFY(dmu_objset_hold(fullname, FTAG, &origin) == ENOENT);
out: out:
(void) rw_unlock(&ztest_shared->zs_name_lock); (void) rw_exit(&ztest_shared->zs_name_lock);
} }
/* /*
@ -4431,11 +4435,11 @@ ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
uint64_t guid0 = 0; uint64_t guid0 = 0;
boolean_t islog = B_FALSE; boolean_t islog = B_FALSE;
VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0); mutex_enter(&zs->zs_vdev_lock);
maxfaults = MAXFAULTS(); maxfaults = MAXFAULTS();
leaves = MAX(zs->zs_mirrors, 1) * zopt_raidz; leaves = MAX(zs->zs_mirrors, 1) * zopt_raidz;
mirror_save = zs->zs_mirrors; mirror_save = zs->zs_mirrors;
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
ASSERT(leaves >= 1); ASSERT(leaves >= 1);
@ -4529,12 +4533,13 @@ ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
* leaving the dataset in an inconsistent state. * leaving the dataset in an inconsistent state.
*/ */
if (islog) if (islog)
(void) rw_wrlock(&ztest_shared->zs_name_lock); (void) rw_enter(&ztest_shared->zs_name_lock,
RW_WRITER);
VERIFY(vdev_offline(spa, guid0, flags) != EBUSY); VERIFY(vdev_offline(spa, guid0, flags) != EBUSY);
if (islog) if (islog)
(void) rw_unlock(&ztest_shared->zs_name_lock); (void) rw_exit(&ztest_shared->zs_name_lock);
} else { } else {
(void) vdev_online(spa, guid0, 0, NULL); (void) vdev_online(spa, guid0, 0, NULL);
} }
@ -4561,9 +4566,9 @@ ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
if (offset >= fsize) if (offset >= fsize)
continue; continue;
VERIFY(mutex_lock(&zs->zs_vdev_lock) == 0); mutex_enter(&zs->zs_vdev_lock);
if (mirror_save != zs->zs_mirrors) { if (mirror_save != zs->zs_mirrors) {
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
(void) close(fd); (void) close(fd);
return; return;
} }
@ -4572,7 +4577,7 @@ ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
fatal(1, "can't inject bad word at 0x%llx in %s", fatal(1, "can't inject bad word at 0x%llx in %s",
offset, pathrand); offset, pathrand);
VERIFY(mutex_unlock(&zs->zs_vdev_lock) == 0); mutex_exit(&zs->zs_vdev_lock);
if (zopt_verbose >= 7) if (zopt_verbose >= 7)
(void) printf("injected bad word into %s," (void) printf("injected bad word into %s,"
@ -4613,13 +4618,13 @@ ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
* Take the name lock as writer to prevent anyone else from changing * Take the name lock as writer to prevent anyone else from changing
* the pool and dataset properies we need to maintain during this test. * the pool and dataset properies we need to maintain during this test.
*/ */
(void) rw_wrlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_WRITER);
if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum, if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum,
B_FALSE) != 0 || B_FALSE) != 0 ||
ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1, ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1,
B_FALSE) != 0) { B_FALSE) != 0) {
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
return; return;
} }
@ -4633,7 +4638,7 @@ ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
dmu_tx_hold_write(tx, object, 0, copies * blocksize); dmu_tx_hold_write(tx, object, 0, copies * blocksize);
txg = ztest_tx_assign(tx, TXG_WAIT, FTAG); txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
if (txg == 0) { if (txg == 0) {
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
return; return;
} }
@ -4677,7 +4682,7 @@ ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
zio_buf_free(buf, psize); zio_buf_free(buf, psize);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
} }
/* /*
@ -4706,7 +4711,7 @@ ztest_spa_rename(ztest_ds_t *zd, uint64_t id)
char *oldname, *newname; char *oldname, *newname;
spa_t *spa; spa_t *spa;
(void) rw_wrlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_WRITER);
oldname = zs->zs_pool; oldname = zs->zs_pool;
newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL); newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL);
@ -4746,7 +4751,7 @@ ztest_spa_rename(ztest_ds_t *zd, uint64_t id)
umem_free(newname, strlen(newname) + 1); umem_free(newname, strlen(newname) + 1);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
} }
/* /*
@ -4919,6 +4924,9 @@ ztest_resume_thread(void *arg)
ztest_resume(spa); ztest_resume(spa);
(void) poll(NULL, 0, 100); (void) poll(NULL, 0, 100);
} }
thread_exit();
return (NULL); return (NULL);
} }
@ -4934,6 +4942,7 @@ ztest_deadman_thread(void *arg)
(void) poll(NULL, 0, (int)(1000 * delta)); (void) poll(NULL, 0, (int)(1000 * delta));
fatal(0, "failed to complete within %d seconds of deadline", grace); fatal(0, "failed to complete within %d seconds of deadline", grace);
thread_exit();
return (NULL); return (NULL);
} }
@ -4996,6 +5005,8 @@ ztest_thread(void *arg)
ztest_execute(zi, id); ztest_execute(zi, id);
} }
thread_exit();
return (NULL); return (NULL);
} }
@ -5061,18 +5072,18 @@ ztest_dataset_open(ztest_shared_t *zs, int d)
ztest_dataset_name(name, zs->zs_pool, d); ztest_dataset_name(name, zs->zs_pool, d);
(void) rw_rdlock(&zs->zs_name_lock); (void) rw_enter(&zs->zs_name_lock, RW_READER);
error = ztest_dataset_create(name); error = ztest_dataset_create(name);
if (error == ENOSPC) { if (error == ENOSPC) {
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
ztest_record_enospc(FTAG); ztest_record_enospc(FTAG);
return (error); return (error);
} }
ASSERT(error == 0 || error == EEXIST); ASSERT(error == 0 || error == EEXIST);
VERIFY3U(dmu_objset_hold(name, zd, &os), ==, 0); VERIFY3U(dmu_objset_hold(name, zd, &os), ==, 0);
(void) rw_unlock(&zs->zs_name_lock); (void) rw_exit(&zs->zs_name_lock);
ztest_zd_init(zd, os); ztest_zd_init(zd, os);
@ -5123,9 +5134,10 @@ ztest_dataset_close(ztest_shared_t *zs, int d)
static void static void
ztest_run(ztest_shared_t *zs) ztest_run(ztest_shared_t *zs)
{ {
thread_t *tid; kthread_t **tid;
spa_t *spa; spa_t *spa;
thread_t resume_tid; kthread_t *resume_thread;
uint64_t object;
int error; int error;
int t, d; int t, d;
@ -5134,8 +5146,8 @@ ztest_run(ztest_shared_t *zs)
/* /*
* Initialize parent/child shared state. * Initialize parent/child shared state.
*/ */
VERIFY(_mutex_init(&zs->zs_vdev_lock, USYNC_THREAD, NULL) == 0); mutex_init(&zs->zs_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
VERIFY(rwlock_init(&zs->zs_name_lock, USYNC_THREAD, NULL) == 0); rw_init(&zs->zs_name_lock, NULL, RW_DEFAULT, NULL);
zs->zs_thread_start = gethrtime(); zs->zs_thread_start = gethrtime();
zs->zs_thread_stop = zs->zs_thread_start + zopt_passtime * NANOSEC; zs->zs_thread_stop = zs->zs_thread_start + zopt_passtime * NANOSEC;
@ -5144,7 +5156,7 @@ ztest_run(ztest_shared_t *zs)
if (ztest_random(100) < zopt_killrate) if (ztest_random(100) < zopt_killrate)
zs->zs_thread_kill -= ztest_random(zopt_passtime * NANOSEC); zs->zs_thread_kill -= ztest_random(zopt_passtime * NANOSEC);
(void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL); mutex_init(&zcl.zcl_callbacks_lock, NULL, MUTEX_DEFAULT, NULL);
list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t), list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
offsetof(ztest_cb_data_t, zcd_node)); offsetof(ztest_cb_data_t, zcd_node));
@ -5171,14 +5183,14 @@ ztest_run(ztest_shared_t *zs)
/* /*
* Create a thread to periodically resume suspended I/O. * Create a thread to periodically resume suspended I/O.
*/ */
VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND, VERIFY3P((resume_thread = thread_create(NULL, 0, ztest_resume_thread,
&resume_tid) == 0); spa, TS_RUN, NULL, 0, 0)), !=, NULL);
/* /*
* Create a deadman thread to abort() if we hang. * Create a deadman thread to abort() if we hang.
*/ */
VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND, VERIFY3P(thread_create(NULL, 0, ztest_deadman_thread, zs,
NULL) == 0); TS_RUN, NULL, 0, 0), !=, NULL);
/* /*
* Verify that we can safely inquire about about any object, * Verify that we can safely inquire about about any object,
@ -5204,7 +5216,7 @@ ztest_run(ztest_shared_t *zs)
} }
zs->zs_enospc_count = 0; zs->zs_enospc_count = 0;
tid = umem_zalloc(zopt_threads * sizeof (thread_t), UMEM_NOFAIL); tid = umem_zalloc(zopt_threads * sizeof (kthread_t *), UMEM_NOFAIL);
if (zopt_verbose >= 4) if (zopt_verbose >= 4)
(void) printf("starting main threads...\n"); (void) printf("starting main threads...\n");
@ -5215,8 +5227,9 @@ ztest_run(ztest_shared_t *zs)
for (t = 0; t < zopt_threads; t++) { for (t = 0; t < zopt_threads; t++) {
if (t < zopt_datasets && ztest_dataset_open(zs, t) != 0) if (t < zopt_datasets && ztest_dataset_open(zs, t) != 0)
return; return;
VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t,
THR_BOUND, &tid[t]) == 0); VERIFY3P(tid[t] = thread_create(NULL, 0, ztest_thread,
(void *)(uintptr_t)t, TS_RUN, NULL, 0, 0), !=, NULL);
} }
/* /*
@ -5224,7 +5237,7 @@ ztest_run(ztest_shared_t *zs)
* so we don't close datasets while threads are still using them. * so we don't close datasets while threads are still using them.
*/ */
for (t = zopt_threads - 1; t >= 0; t--) { for (t = zopt_threads - 1; t >= 0; t--) {
VERIFY(thr_join(tid[t], NULL, NULL) == 0); thread_join(tid[t]->t_tid);
if (t < zopt_datasets) if (t < zopt_datasets)
ztest_dataset_close(zs, t); ztest_dataset_close(zs, t);
} }
@ -5234,18 +5247,18 @@ ztest_run(ztest_shared_t *zs)
zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa)); zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
zs->zs_space = metaslab_class_get_space(spa_normal_class(spa)); zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
umem_free(tid, zopt_threads * sizeof (thread_t)); umem_free(tid, zopt_threads * sizeof (kthread_t *));
/* Kill the resume thread */ /* Kill the resume thread */
ztest_exiting = B_TRUE; ztest_exiting = B_TRUE;
VERIFY(thr_join(resume_tid, NULL, NULL) == 0); thread_join(resume_thread->t_tid);
ztest_resume(spa); ztest_resume(spa);
/* /*
* Right before closing the pool, kick off a bunch of async I/O; * Right before closing the pool, kick off a bunch of async I/O;
* spa_close() should wait for it to complete. * spa_close() should wait for it to complete.
*/ */
for (uint64_t object = 1; object < 50; object++) for (object = 1; object < 50; object++)
dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20); dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20);
spa_close(spa, FTAG); spa_close(spa, FTAG);
@ -5343,10 +5356,10 @@ ztest_freeze(ztest_shared_t *zs)
list_destroy(&zcl.zcl_callbacks); list_destroy(&zcl.zcl_callbacks);
(void) _mutex_destroy(&zcl.zcl_callbacks_lock); (void) mutex_destroy(&zcl.zcl_callbacks_lock);
(void) rwlock_destroy(&zs->zs_name_lock); (void) rw_destroy(&zs->zs_name_lock);
(void) _mutex_destroy(&zs->zs_vdev_lock); (void) mutex_destroy(&zs->zs_vdev_lock);
} }
void void
@ -5401,8 +5414,8 @@ ztest_init(ztest_shared_t *zs)
spa_t *spa; spa_t *spa;
nvlist_t *nvroot, *props; nvlist_t *nvroot, *props;
VERIFY(_mutex_init(&zs->zs_vdev_lock, USYNC_THREAD, NULL) == 0); mutex_init(&zs->zs_vdev_lock, NULL, MUTEX_DEFAULT, NULL);
VERIFY(rwlock_init(&zs->zs_name_lock, USYNC_THREAD, NULL) == 0); rw_init(&zs->zs_name_lock, NULL, RW_DEFAULT, NULL);
kernel_init(FREAD | FWRITE); kernel_init(FREAD | FWRITE);

7
lib/libuutil/uu_misc.c
View File

@ -37,7 +37,6 @@
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <sys/debug.h> #include <sys/debug.h>
#include <thread.h>
#include <unistd.h> #include <unistd.h>
#if !defined(TEXT_DOMAIN) #if !defined(TEXT_DOMAIN)
@ -70,11 +69,12 @@ static va_list uu_panic_args;
static pthread_t uu_panic_thread; static pthread_t uu_panic_thread;
static uint32_t _uu_main_error; static uint32_t _uu_main_error;
static __thread int _uu_main_thread = 0;
void void
uu_set_error(uint_t code) uu_set_error(uint_t code)
{ {
if (thr_main() != 0) { if (_uu_main_thread) {
_uu_main_error = code; _uu_main_error = code;
return; return;
} }
@ -103,7 +103,7 @@ uu_set_error(uint_t code)
uint32_t uint32_t
uu_error(void) uu_error(void)
{ {
if (thr_main() != 0) if (_uu_main_thread)
return (_uu_main_error); return (_uu_main_error);
if (uu_error_key_setup < 0) /* can't happen? */ if (uu_error_key_setup < 0) /* can't happen? */
@ -261,5 +261,6 @@ uu_init(void) __attribute__((constructor));
static void static void
uu_init(void) uu_init(void)
{ {
_uu_main_thread = 1;
(void) pthread_atfork(uu_lockup, uu_release, uu_release_child); (void) pthread_atfork(uu_lockup, uu_release, uu_release_child);
} }

112
lib/libzpool/include/sys/zfs_context.h
View File

@ -50,8 +50,7 @@ extern "C" {
#include <errno.h> #include <errno.h>
#include <string.h> #include <string.h>
#include <strings.h> #include <strings.h>
#include <synch.h> #include <pthread.h>
#include <thread.h>
#include <assert.h> #include <assert.h>
#include <alloca.h> #include <alloca.h>
#include <umem.h> #include <umem.h>
@ -97,6 +96,8 @@ extern "C" {
#define CE_PANIC 3 /* panic */ #define CE_PANIC 3 /* panic */
#define CE_IGNORE 4 /* print nothing */ #define CE_IGNORE 4 /* print nothing */
extern int aok;
/* /*
* ZFS debugging * ZFS debugging
*/ */
@ -202,27 +203,45 @@ _NOTE(CONSTCOND) } while (0)
/* /*
* Threads * Threads
*/ */
#define curthread ((void *)(uintptr_t)thr_self()) #define TS_RUN 0x00000002
#define STACK_SIZE 8192 /* Linux x86 and amd64 */
typedef struct kthread kthread_t;
#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
zk_thread_create(func, arg)
#define thread_exit() thr_exit(NULL)
#define thread_join(t) panic("libzpool cannot join threads")
#define newproc(f, a, cid, pri, ctp, pid) (ENOSYS)
/* in libzpool, p0 exists only to have its address taken */ /* in libzpool, p0 exists only to have its address taken */
struct proc { typedef struct proc {
uintptr_t this_is_never_used_dont_dereference_it; uintptr_t this_is_never_used_dont_dereference_it;
}; } proc_t;
extern struct proc p0; extern struct proc p0;
#define PS_NONE -1 typedef void (*thread_func_t)(void *);
typedef void (*thread_func_arg_t)(void *);
typedef pthread_t kt_did_t;
extern kthread_t *zk_thread_create(void (*func)(), void *arg); typedef struct kthread {
kt_did_t t_tid;
thread_func_t t_func;
void * t_arg;
} kthread_t;
/* XXX tsd_create()/tsd_destroy() missing */
#define tsd_get(key) pthread_getspecific(key)
#define tsd_set(key, val) pthread_setspecific(key, val)
#define curthread zk_thread_current()
#define thread_exit zk_thread_exit
#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \
zk_thread_create(stk, stksize, (thread_func_t)func, arg, \
len, NULL, state, pri)
#define thread_join(t) zk_thread_join(t)
#define newproc(f,a,cid,pri,ctp,pid) (ENOSYS)
extern kthread_t *zk_thread_current(void);
extern void zk_thread_exit(void);
extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize,
thread_func_t func, void *arg, size_t len,
proc_t *pp, int state, pri_t pri);
extern void zk_thread_join(kt_did_t tid);
#define PS_NONE -1
#define issig(why) (FALSE) #define issig(why) (FALSE)
#define ISSIG(thr, why) (FALSE) #define ISSIG(thr, why) (FALSE)
@ -230,53 +249,51 @@ extern kthread_t *zk_thread_create(void (*func)(), void *arg);
/* /*
* Mutexes * Mutexes
*/ */
#define MTX_MAGIC 0x9522f51362a6e326ull
#define MTX_INIT ((void *)NULL)
#define MTX_DEST ((void *)-1UL)
typedef struct kmutex { typedef struct kmutex {
void *m_owner; void *m_owner;
boolean_t initialized; uint64_t m_magic;
mutex_t m_lock; pthread_mutex_t m_lock;
} kmutex_t; } kmutex_t;
#define MUTEX_DEFAULT USYNC_THREAD #define MUTEX_DEFAULT 0
#undef MUTEX_HELD #define MUTEX_HELD(m) ((m)->m_owner == curthread)
#define MUTEX_HELD(m) _mutex_held(&(m)->m_lock)
/* extern void mutex_init(kmutex_t *mp, char *name, int type, void *cookie);
* Argh -- we have to get cheesy here because the kernel and userland extern void mutex_destroy(kmutex_t *mp);
* have different signatures for the same routine.
*/
extern int _mutex_init(mutex_t *mp, int type, void *arg);
extern int _mutex_destroy(mutex_t *mp);
#define mutex_init(mp, b, c, d) zmutex_init((kmutex_t *)(mp))
#define mutex_destroy(mp) zmutex_destroy((kmutex_t *)(mp))
extern void zmutex_init(kmutex_t *mp);
extern void zmutex_destroy(kmutex_t *mp);
extern void mutex_enter(kmutex_t *mp); extern void mutex_enter(kmutex_t *mp);
extern void mutex_exit(kmutex_t *mp); extern void mutex_exit(kmutex_t *mp);
extern int mutex_tryenter(kmutex_t *mp); extern int mutex_tryenter(kmutex_t *mp);
extern void *mutex_owner(kmutex_t *mp); extern void *mutex_owner(kmutex_t *mp);
extern int mutex_held(kmutex_t *mp);
/* /*
* RW locks * RW locks
*/ */
#define RW_MAGIC 0x4d31fb123648e78aull
#define RW_INIT ((void *)NULL)
#define RW_DEST ((void *)-1UL)
typedef struct krwlock { typedef struct krwlock {
void *rw_owner; void *rw_owner;
boolean_t initialized; void *rw_wr_owner;
rwlock_t rw_lock; uint64_t rw_magic;
pthread_rwlock_t rw_lock;
uint_t rw_readers;
} krwlock_t; } krwlock_t;
typedef int krw_t; typedef int krw_t;
#define RW_READER 0 #define RW_READER 0
#define RW_WRITER 1 #define RW_WRITER 1
#define RW_DEFAULT USYNC_THREAD #define RW_DEFAULT RW_READER
#undef RW_READ_HELD #define RW_READ_HELD(x) ((x)->rw_readers > 0)
#define RW_READ_HELD(x) _rw_read_held(&(x)->rw_lock) #define RW_WRITE_HELD(x) ((x)->rw_wr_owner == curthread)
#define RW_LOCK_HELD(x) (RW_READ_HELD(x) || RW_WRITE_HELD(x))
#undef RW_WRITE_HELD
#define RW_WRITE_HELD(x) _rw_write_held(&(x)->rw_lock)
extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg); extern void rw_init(krwlock_t *rwlp, char *name, int type, void *arg);
extern void rw_destroy(krwlock_t *rwlp); extern void rw_destroy(krwlock_t *rwlp);
@ -294,9 +311,14 @@ extern gid_t *crgetgroups(cred_t *cr);
/* /*
* Condition variables * Condition variables
*/ */
typedef cond_t kcondvar_t; #define CV_MAGIC 0xd31ea9a83b1b30c4ull
#define CV_DEFAULT USYNC_THREAD typedef struct kcondvar {
uint64_t cv_magic;
pthread_cond_t cv;
} kcondvar_t;
#define CV_DEFAULT 0
extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg); extern void cv_init(kcondvar_t *cv, char *name, int type, void *arg);
extern void cv_destroy(kcondvar_t *cv); extern void cv_destroy(kcondvar_t *cv);
@ -361,7 +383,7 @@ extern taskq_t *taskq_create(const char *, int, pri_t, int, int, uint_t);
extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t); extern taskqid_t taskq_dispatch(taskq_t *, task_func_t, void *, uint_t);
extern void taskq_destroy(taskq_t *); extern void taskq_destroy(taskq_t *);
extern void taskq_wait(taskq_t *); extern void taskq_wait(taskq_t *);
extern int taskq_member(taskq_t *, void *); extern int taskq_member(taskq_t *, kthread_t *);
extern void system_taskq_init(void); extern void system_taskq_init(void);
extern void system_taskq_fini(void); extern void system_taskq_fini(void);
@ -488,7 +510,7 @@ extern void delay(clock_t ticks);
#define minclsyspri 60 #define minclsyspri 60
#define maxclsyspri 99 #define maxclsyspri 99
#define CPU_SEQID (thr_self() & (max_ncpus - 1)) #define CPU_SEQID (pthread_self() & (max_ncpus - 1))
#define kcred NULL #define kcred NULL
#define CRED() NULL #define CRED() NULL

336
lib/libzpool/kernel.c
View File

@ -30,6 +30,7 @@
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <zlib.h> #include <zlib.h>
#include <sys/signal.h>
#include <sys/spa.h> #include <sys/spa.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/processor.h> #include <sys/processor.h>
@ -58,16 +59,150 @@ struct proc p0;
* threads * threads
* ========================================================================= * =========================================================================
*/ */
/*ARGSUSED*/
kthread_t * pthread_cond_t kthread_cond = PTHREAD_COND_INITIALIZER;
zk_thread_create(void (*func)(), void *arg) pthread_mutex_t kthread_lock = PTHREAD_MUTEX_INITIALIZER;
pthread_key_t kthread_key;
int kthread_nr = 0;
static void
thread_init(void)
{ {
thread_t tid; kthread_t *kt;
VERIFY(thr_create(0, 0, (void *(*)(void *))func, arg, THR_DETACHED, VERIFY3S(pthread_key_create(&kthread_key, NULL), ==, 0);
&tid) == 0);
return ((void *)(uintptr_t)tid); /* Create entry for primary kthread */
kt = umem_zalloc(sizeof(kthread_t), UMEM_NOFAIL);
kt->t_tid = pthread_self();
kt->t_func = NULL;
VERIFY3S(pthread_setspecific(kthread_key, kt), ==, 0);
/* Only the main thread should be running at the moment */
ASSERT3S(kthread_nr, ==, 0);
kthread_nr = 1;
}
static void
thread_fini(void)
{
kthread_t *kt = curthread;
ASSERT(pthread_equal(kt->t_tid, pthread_self()));
ASSERT3P(kt->t_func, ==, NULL);
umem_free(kt, sizeof(kthread_t));
/* Wait for all threads to exit via thread_exit() */
VERIFY3S(pthread_mutex_lock(&kthread_lock), ==, 0);
kthread_nr--; /* Main thread is exiting */
while (kthread_nr > 0)
VERIFY3S(pthread_cond_wait(&kthread_cond, &kthread_lock), ==,
0);
ASSERT3S(kthread_nr, ==, 0);
VERIFY3S(pthread_mutex_unlock(&kthread_lock), ==, 0);
VERIFY3S(pthread_key_delete(kthread_key), ==, 0);
}
kthread_t *
zk_thread_current(void)
{
kthread_t *kt = pthread_getspecific(kthread_key);
ASSERT3P(kt, !=, NULL);
return kt;
}
void *
zk_thread_helper(void *arg)
{
kthread_t *kt = (kthread_t *) arg;
VERIFY3S(pthread_setspecific(kthread_key, kt), ==, 0);
VERIFY3S(pthread_mutex_lock(&kthread_lock), ==, 0);
kthread_nr++;
VERIFY3S(pthread_mutex_unlock(&kthread_lock), ==, 0);
kt->t_tid = pthread_self();
((thread_func_arg_t) kt->t_func)(kt->t_arg);
/* Unreachable, thread must exit with thread_exit() */
abort();
return NULL;
}
kthread_t *
zk_thread_create(caddr_t stk, size_t stksize, thread_func_t func, void *arg,
size_t len, proc_t *pp, int state, pri_t pri)
{
kthread_t *kt;
pthread_t tid;
pthread_attr_t attr;
size_t stack;
/*
* Due to a race when getting/setting the thread ID, currently only
* detached threads are supported.
*/
ASSERT3S(state & ~TS_RUN, ==, 0);
kt = umem_zalloc(sizeof(kthread_t), UMEM_NOFAIL);
kt->t_func = func;
kt->t_arg = arg;
/*
* The Solaris kernel stack size in x86/x64 is 8K, so we reduce the
* default stack size in userspace, for sanity checking.
*
* PTHREAD_STACK_MIN is the stack required for a NULL procedure in
* userspace.
*
* XXX: Stack size for other architectures is not being taken into
* account.
*/
stack = PTHREAD_STACK_MIN + MAX(stksize, STACK_SIZE);
VERIFY3S(pthread_attr_init(&attr), ==, 0);
VERIFY3S(pthread_attr_setstacksize(&attr, stack), ==, 0);
VERIFY3S(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED),
==, 0);
VERIFY3S(pthread_create(&tid, &attr, &zk_thread_helper, kt), ==, 0);
VERIFY3S(pthread_attr_destroy(&attr), ==, 0);
return kt;
}
void
zk_thread_exit(void)
{
kthread_t *kt = curthread;
ASSERT(pthread_equal(kt->t_tid, pthread_self()));
umem_free(kt, sizeof(kthread_t));
pthread_mutex_lock(&kthread_lock);
kthread_nr--;
pthread_mutex_unlock(&kthread_lock);
pthread_cond_broadcast(&kthread_cond);
pthread_exit(NULL);
}
void
zk_thread_join(kt_did_t tid)
{
pthread_join((pthread_t)tid, NULL);
} }
/* /*
@ -98,42 +233,45 @@ kstat_delete(kstat_t *ksp)
* mutexes * mutexes
* ========================================================================= * =========================================================================
*/ */
void void
zmutex_init(kmutex_t *mp) mutex_init(kmutex_t *mp, char *name, int type, void *cookie)
{ {
mp->m_owner = NULL; ASSERT3S(type, ==, MUTEX_DEFAULT);
mp->initialized = B_TRUE; ASSERT3P(cookie, ==, NULL);
(void) _mutex_init(&mp->m_lock, USYNC_THREAD, NULL); mp->m_owner = MTX_INIT;
mp->m_magic = MTX_MAGIC;
VERIFY3S(pthread_mutex_init(&mp->m_lock, NULL), ==, 0);
} }
void void
zmutex_destroy(kmutex_t *mp) mutex_destroy(kmutex_t *mp)
{ {
ASSERT(mp->initialized == B_TRUE); ASSERT3U(mp->m_magic, ==, MTX_MAGIC);
ASSERT(mp->m_owner == NULL); ASSERT3P(mp->m_owner, ==, MTX_INIT);
(void) _mutex_destroy(&(mp)->m_lock); VERIFY3S(pthread_mutex_destroy(&(mp)->m_lock), ==, 0);
mp->m_owner = (void *)-1UL; mp->m_owner = MTX_DEST;
mp->initialized = B_FALSE; mp->m_magic = 0;
} }
void void
mutex_enter(kmutex_t *mp) mutex_enter(kmutex_t *mp)
{ {
ASSERT(mp->initialized == B_TRUE); ASSERT3U(mp->m_magic, ==, MTX_MAGIC);
ASSERT(mp->m_owner != (void *)-1UL); ASSERT3P(mp->m_owner, !=, MTX_DEST);
ASSERT(mp->m_owner != curthread); ASSERT3P(mp->m_owner, !=, curthread);
VERIFY(mutex_lock(&mp->m_lock) == 0); VERIFY3S(pthread_mutex_lock(&mp->m_lock), ==, 0);
ASSERT(mp->m_owner == NULL); ASSERT3P(mp->m_owner, ==, MTX_INIT);
mp->m_owner = curthread; mp->m_owner = curthread;
} }
int int
mutex_tryenter(kmutex_t *mp) mutex_tryenter(kmutex_t *mp)
{ {
ASSERT(mp->initialized == B_TRUE); ASSERT3U(mp->m_magic, ==, MTX_MAGIC);
ASSERT(mp->m_owner != (void *)-1UL); ASSERT3P(mp->m_owner, !=, MTX_DEST);
if (0 == mutex_trylock(&mp->m_lock)) { if (0 == pthread_mutex_trylock(&mp->m_lock)) {
ASSERT(mp->m_owner == NULL); ASSERT3P(mp->m_owner, ==, MTX_INIT);
mp->m_owner = curthread; mp->m_owner = curthread;
return (1); return (1);
} else { } else {
@ -144,53 +282,71 @@ mutex_tryenter(kmutex_t *mp)
void void
mutex_exit(kmutex_t *mp) mutex_exit(kmutex_t *mp)
{ {
ASSERT(mp->initialized == B_TRUE); ASSERT3U(mp->m_magic, ==, MTX_MAGIC);
ASSERT(mutex_owner(mp) == curthread); ASSERT3P(mutex_owner(mp), ==, curthread);
mp->m_owner = NULL; mp->m_owner = MTX_INIT;
VERIFY(mutex_unlock(&mp->m_lock) == 0); VERIFY3S(pthread_mutex_unlock(&mp->m_lock), ==, 0);
} }
void * void *
mutex_owner(kmutex_t *mp) mutex_owner(kmutex_t *mp)
{ {
ASSERT(mp->initialized == B_TRUE); ASSERT3U(mp->m_magic, ==, MTX_MAGIC);
return (mp->m_owner); return (mp->m_owner);
} }
int
mutex_held(kmutex_t *mp)
{
return (mp->m_owner == curthread);
}
/* /*
* ========================================================================= * =========================================================================
* rwlocks * rwlocks
* ========================================================================= * =========================================================================
*/ */
/*ARGSUSED*/
void void
rw_init(krwlock_t *rwlp, char *name, int type, void *arg) rw_init(krwlock_t *rwlp, char *name, int type, void *arg)
{ {
rwlock_init(&rwlp->rw_lock, USYNC_THREAD, NULL); ASSERT3S(type, ==, RW_DEFAULT);
rwlp->rw_owner = NULL; ASSERT3P(arg, ==, NULL);
rwlp->initialized = B_TRUE; VERIFY3S(pthread_rwlock_init(&rwlp->rw_lock, NULL), ==, 0);
rwlp->rw_owner = RW_INIT;
rwlp->rw_wr_owner = RW_INIT;
rwlp->rw_readers = 0;
rwlp->rw_magic = RW_MAGIC;
} }
void void
rw_destroy(krwlock_t *rwlp) rw_destroy(krwlock_t *rwlp)
{ {
rwlock_destroy(&rwlp->rw_lock); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
rwlp->rw_owner = (void *)-1UL;
rwlp->initialized = B_FALSE; VERIFY3S(pthread_rwlock_destroy(&rwlp->rw_lock), ==, 0);
rwlp->rw_magic = 0;
} }
void void
rw_enter(krwlock_t *rwlp, krw_t rw) rw_enter(krwlock_t *rwlp, krw_t rw)
{ {
ASSERT(!RW_LOCK_HELD(rwlp)); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
ASSERT(rwlp->initialized == B_TRUE); ASSERT3P(rwlp->rw_owner, !=, curthread);
ASSERT(rwlp->rw_owner != (void *)-1UL); ASSERT3P(rwlp->rw_wr_owner, !=, curthread);
ASSERT(rwlp->rw_owner != curthread);
if (rw == RW_READER) if (rw == RW_READER) {
VERIFY(rw_rdlock(&rwlp->rw_lock) == 0); VERIFY3S(pthread_rwlock_rdlock(&rwlp->rw_lock), ==, 0);
else ASSERT3P(rwlp->rw_wr_owner, ==, RW_INIT);
VERIFY(rw_wrlock(&rwlp->rw_lock) == 0);
atomic_inc_uint(&rwlp->rw_readers);
} else {
VERIFY3S(pthread_rwlock_wrlock(&rwlp->rw_lock), ==, 0);
ASSERT3P(rwlp->rw_wr_owner, ==, RW_INIT);
ASSERT3U(rwlp->rw_readers, ==, 0);
rwlp->rw_wr_owner = curthread;
}
rwlp->rw_owner = curthread; rwlp->rw_owner = curthread;
} }
@ -198,11 +354,16 @@ rw_enter(krwlock_t *rwlp, krw_t rw)
void void
rw_exit(krwlock_t *rwlp) rw_exit(krwlock_t *rwlp)
{ {
ASSERT(rwlp->initialized == B_TRUE); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
ASSERT(rwlp->rw_owner != (void *)-1UL); ASSERT(RW_LOCK_HELD(rwlp));
rwlp->rw_owner = NULL; if (RW_READ_HELD(rwlp))
VERIFY(rw_unlock(&rwlp->rw_lock) == 0); atomic_dec_uint(&rwlp->rw_readers);
else
rwlp->rw_wr_owner = RW_INIT;
rwlp->rw_owner = RW_INIT;
VERIFY3S(pthread_rwlock_unlock(&rwlp->rw_lock), ==, 0);
} }
int int
@ -210,28 +371,36 @@ rw_tryenter(krwlock_t *rwlp, krw_t rw)
{ {
int rv; int rv;
ASSERT(rwlp->initialized == B_TRUE); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
ASSERT(rwlp->rw_owner != (void *)-1UL);
if (rw == RW_READER) if (rw == RW_READER)
rv = rw_tryrdlock(&rwlp->rw_lock); rv = pthread_rwlock_tryrdlock(&rwlp->rw_lock);
else else
rv = rw_trywrlock(&rwlp->rw_lock); rv = pthread_rwlock_trywrlock(&rwlp->rw_lock);
if (rv == 0) { if (rv == 0) {
ASSERT3P(rwlp->rw_wr_owner, ==, RW_INIT);
if (rw == RW_READER)
atomic_inc_uint(&rwlp->rw_readers);
else {
ASSERT3U(rwlp->rw_readers, ==, 0);
rwlp->rw_wr_owner = curthread;
}
rwlp->rw_owner = curthread; rwlp->rw_owner = curthread;
return (1); return (1);
} }
VERIFY3S(rv, ==, EBUSY);
return (0); return (0);
} }
/*ARGSUSED*/
int int
rw_tryupgrade(krwlock_t *rwlp) rw_tryupgrade(krwlock_t *rwlp)
{ {
ASSERT(rwlp->initialized == B_TRUE); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
ASSERT(rwlp->rw_owner != (void *)-1UL);
return (0); return (0);
} }
@ -241,26 +410,32 @@ rw_tryupgrade(krwlock_t *rwlp)
* condition variables * condition variables
* ========================================================================= * =========================================================================
*/ */
/*ARGSUSED*/
void void
cv_init(kcondvar_t *cv, char *name, int type, void *arg) cv_init(kcondvar_t *cv, char *name, int type, void *arg)
{ {
VERIFY(cond_init(cv, type, NULL) == 0); ASSERT3S(type, ==, CV_DEFAULT);
cv->cv_magic = CV_MAGIC;
VERIFY3S(pthread_cond_init(&cv->cv, NULL), ==, 0);
} }
void void
cv_destroy(kcondvar_t *cv) cv_destroy(kcondvar_t *cv)
{ {
VERIFY(cond_destroy(cv) == 0); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
VERIFY3S(pthread_cond_destroy(&cv->cv), ==, 0);
cv->cv_magic = 0;
} }
void void
cv_wait(kcondvar_t *cv, kmutex_t *mp) cv_wait(kcondvar_t *cv, kmutex_t *mp)
{ {
ASSERT(mutex_owner(mp) == curthread); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
mp->m_owner = NULL; ASSERT3P(mutex_owner(mp), ==, curthread);
int ret = cond_wait(cv, &mp->m_lock); mp->m_owner = MTX_INIT;
VERIFY(ret == 0 || ret == EINTR); int ret = pthread_cond_wait(&cv->cv, &mp->m_lock);
if (ret != 0)
VERIFY3S(ret, ==, EINTR);
mp->m_owner = curthread; mp->m_owner = curthread;
} }
@ -268,29 +443,38 @@ clock_t
cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime) cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime)
{ {
int error; int error;
struct timeval tv;
timestruc_t ts; timestruc_t ts;
clock_t delta; clock_t delta;
ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
top: top:
delta = abstime - ddi_get_lbolt(); delta = abstime - ddi_get_lbolt();
if (delta <= 0) if (delta <= 0)
return (-1); return (-1);
ts.tv_sec = delta / hz; VERIFY(gettimeofday(&tv, NULL) == 0);
ts.tv_nsec = (delta % hz) * (NANOSEC / hz);
ASSERT(mutex_owner(mp) == curthread); ts.tv_sec = tv.tv_sec + delta / hz;
mp->m_owner = NULL; ts.tv_nsec = tv.tv_usec * 1000 + (delta % hz) * (NANOSEC / hz);
error = cond_reltimedwait(cv, &mp->m_lock, &ts); if (ts.tv_nsec >= NANOSEC) {
ts.tv_sec++;
ts.tv_nsec -= NANOSEC;
}
ASSERT3P(mutex_owner(mp), ==, curthread);
mp->m_owner = MTX_INIT;
error = pthread_cond_timedwait(&cv->cv, &mp->m_lock, &ts);
mp->m_owner = curthread; mp->m_owner = curthread;
if (error == ETIME) if (error == ETIMEDOUT)
return (-1); return (-1);
if (error == EINTR) if (error == EINTR)
goto top; goto top;
ASSERT(error == 0); VERIFY3S(error, ==, 0);
return (1); return (1);
} }
@ -298,13 +482,15 @@ top:
void void
cv_signal(kcondvar_t *cv) cv_signal(kcondvar_t *cv)
{ {
VERIFY(cond_signal(cv) == 0); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
VERIFY3S(pthread_cond_signal(&cv->cv), ==, 0);
} }
void void
cv_broadcast(kcondvar_t *cv) cv_broadcast(kcondvar_t *cv)
{ {
VERIFY(cond_broadcast(cv) == 0); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
VERIFY3S(pthread_cond_broadcast(&cv->cv), ==, 0);
} }
/* /*
@ -572,7 +758,7 @@ __dprintf(const char *file, const char *func, int line, const char *fmt, ...)
if (dprintf_find_string("pid")) if (dprintf_find_string("pid"))
(void) printf("%d ", getpid()); (void) printf("%d ", getpid());
if (dprintf_find_string("tid")) if (dprintf_find_string("tid"))
(void) printf("%u ", thr_self()); (void) printf("%u ", (uint_t) pthread_self());
if (dprintf_find_string("cpu")) if (dprintf_find_string("cpu"))
(void) printf("%u ", getcpuid()); (void) printf("%u ", getcpuid());
if (dprintf_find_string("time")) if (dprintf_find_string("time"))
@ -825,6 +1011,7 @@ kernel_init(int mode)
VERIFY((random_fd = open("/dev/random", O_RDONLY)) != -1); VERIFY((random_fd = open("/dev/random", O_RDONLY)) != -1);
VERIFY((urandom_fd = open("/dev/urandom", O_RDONLY)) != -1); VERIFY((urandom_fd = open("/dev/urandom", O_RDONLY)) != -1);
thread_init();
system_taskq_init(); system_taskq_init();
spa_init(mode); spa_init(mode);
@ -836,6 +1023,7 @@ kernel_fini(void)
spa_fini(); spa_fini();
system_taskq_fini(); system_taskq_fini();
thread_fini();
close(random_fd); close(random_fd);
close(urandom_fd); close(urandom_fd);

22
lib/libzpool/taskq.c
View File

@ -42,7 +42,7 @@ struct taskq {
krwlock_t tq_threadlock; krwlock_t tq_threadlock;
kcondvar_t tq_dispatch_cv; kcondvar_t tq_dispatch_cv;
kcondvar_t tq_wait_cv; kcondvar_t tq_wait_cv;
thread_t *tq_threadlist; kthread_t **tq_threadlist;
int tq_flags; int tq_flags;
int tq_active; int tq_active;
int tq_nthreads; int tq_nthreads;
@ -154,7 +154,7 @@ taskq_wait(taskq_t *tq)
mutex_exit(&tq->tq_lock); mutex_exit(&tq->tq_lock);
} }
static void * static void
taskq_thread(void *arg) taskq_thread(void *arg)
{ {
taskq_t *tq = arg; taskq_t *tq = arg;
@ -183,7 +183,7 @@ taskq_thread(void *arg)
tq->tq_nthreads--; tq->tq_nthreads--;
cv_broadcast(&tq->tq_wait_cv); cv_broadcast(&tq->tq_wait_cv);
mutex_exit(&tq->tq_lock); mutex_exit(&tq->tq_lock);
return (NULL); thread_exit();
} }
/*ARGSUSED*/ /*ARGSUSED*/
@ -219,7 +219,7 @@ taskq_create(const char *name, int nthreads, pri_t pri,
tq->tq_maxalloc = maxalloc; tq->tq_maxalloc = maxalloc;
tq->tq_task.task_next = &tq->tq_task; tq->tq_task.task_next = &tq->tq_task;
tq->tq_task.task_prev = &tq->tq_task; tq->tq_task.task_prev = &tq->tq_task;
tq->tq_threadlist = kmem_alloc(nthreads * sizeof (thread_t), KM_SLEEP); tq->tq_threadlist = kmem_alloc(nthreads*sizeof(kthread_t *), KM_SLEEP);
if (flags & TASKQ_PREPOPULATE) { if (flags & TASKQ_PREPOPULATE) {
mutex_enter(&tq->tq_lock); mutex_enter(&tq->tq_lock);
@ -229,8 +229,8 @@ taskq_create(const char *name, int nthreads, pri_t pri,
} }
for (t = 0; t < nthreads; t++) for (t = 0; t < nthreads; t++)
(void) thr_create(0, 0, taskq_thread, VERIFY((tq->tq_threadlist[t] = thread_create(NULL, 0,
tq, THR_BOUND, &tq->tq_threadlist[t]); taskq_thread, tq, TS_RUN, NULL, 0, 0)) != NULL);
return (tq); return (tq);
} }
@ -238,7 +238,6 @@ taskq_create(const char *name, int nthreads, pri_t pri,
void void
taskq_destroy(taskq_t *tq) taskq_destroy(taskq_t *tq)
{ {
int t;
int nthreads = tq->tq_nthreads; int nthreads = tq->tq_nthreads;
taskq_wait(tq); taskq_wait(tq);
@ -259,10 +258,7 @@ taskq_destroy(taskq_t *tq)
mutex_exit(&tq->tq_lock); mutex_exit(&tq->tq_lock);
for (t = 0; t < nthreads; t++) kmem_free(tq->tq_threadlist, nthreads * sizeof (kthread_t *));
(void) thr_join(tq->tq_threadlist[t], NULL, NULL);
kmem_free(tq->tq_threadlist, nthreads * sizeof (thread_t));
rw_destroy(&tq->tq_threadlock); rw_destroy(&tq->tq_threadlock);
mutex_destroy(&tq->tq_lock); mutex_destroy(&tq->tq_lock);
@ -274,7 +270,7 @@ taskq_destroy(taskq_t *tq)
} }
int int
taskq_member(taskq_t *tq, void *t) taskq_member(taskq_t *tq, kthread_t *t)
{ {
int i; int i;
@ -282,7 +278,7 @@ taskq_member(taskq_t *tq, void *t)
return (1); return (1);
for (i = 0; i < tq->tq_nthreads; i++) for (i = 0; i < tq->tq_nthreads; i++)
if (tq->tq_threadlist[i] == (thread_t)(uintptr_t)t) if (tq->tq_threadlist[i] == t)
return (1); return (1);
return (0); return (0);

5
module/zfs/zio.c
View File

@ -1049,7 +1049,10 @@ zio_taskq_dispatch(zio_t *zio, enum zio_taskq_type q, boolean_t cutinline)
{ {
spa_t *spa = zio->io_spa; spa_t *spa = zio->io_spa;
zio_type_t t = zio->io_type; zio_type_t t = zio->io_type;
int flags = TQ_SLEEP | (cutinline ? TQ_FRONT : 0); int flags;
flags = (cutinline ? TQ_FRONT : 0);
flags |= ((q == ZIO_TASKQ_INTERRUPT) ? TQ_NOSLEEP : TQ_SLEEP);
/* /*
* If we're a config writer or a probe, the normal issue and * If we're a config writer or a probe, the normal issue and