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

This commit is contained in:
Brian Behlendorf 2009-07-14 14:38:54 -07:00
parent 379941cb58 fef9a2c571
commit 24f65b670e
5 changed files with 236 additions and 107 deletions
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19
cmd/ztest/ztest.c
View File

@ -141,6 +141,7 @@ typedef struct ztest_args {
objset_t *za_os; objset_t *za_os;
zilog_t *za_zilog; zilog_t *za_zilog;
kthread_t *za_thread; kthread_t *za_thread;
kt_did_t za_threadid;
uint64_t za_instance; uint64_t za_instance;
uint64_t za_random; uint64_t za_random;
uint64_t za_diroff; uint64_t za_diroff;
@ -3820,6 +3821,8 @@ ztest_resume_thread(void *arg)
(void) poll(NULL, 0, 1000); (void) poll(NULL, 0, 1000);
ztest_resume(spa); ztest_resume(spa);
} }
thread_exit();
return (NULL); return (NULL);
} }
@ -3884,6 +3887,7 @@ ztest_thread(void *arg)
break; break;
} }
thread_exit();
return (NULL); return (NULL);
} }
@ -3899,6 +3903,7 @@ ztest_run(char *pool)
spa_t *spa; spa_t *spa;
char name[100]; char name[100];
kthread_t *resume_thread; kthread_t *resume_thread;
kt_did_t resume_id;
ztest_exiting = B_FALSE; ztest_exiting = B_FALSE;
@ -3977,8 +3982,9 @@ ztest_run(char *pool)
/* /*
* Create a thread to periodically resume suspended I/O. * Create a thread to periodically resume suspended I/O.
*/ */
resume_thread = thread_create(NULL, 0, ztest_resume_thread, spa, VERIFY3P((resume_thread = thread_create(NULL, 0, ztest_resume_thread,
THR_BOUND, NULL, 0, 0); spa, THR_BOUND, NULL, 0, 0)), !=, NULL);
resume_id = resume_thread->t_tid;
/* /*
* Verify that we can safely inquire about about any object, * Verify that we can safely inquire about about any object,
@ -4054,12 +4060,13 @@ ztest_run(char *pool)
za[d].za_zilog = zil_open(za[d].za_os, NULL); za[d].za_zilog = zil_open(za[d].za_os, NULL);
} }
za[t].za_thread = thread_create(NULL, 0, ztest_thread, &za[t], VERIFY3P((za[t].za_thread = thread_create(NULL, 0, ztest_thread,
THR_BOUND, NULL, 0, 0); &za[t], THR_BOUND, NULL, 0, 0)), !=, NULL);
za[t].za_threadid = za[t].za_thread->t_tid;
} }
while (--t >= 0) { while (--t >= 0) {
VERIFY(thr_join(za[t].za_thread, NULL, NULL) == 0); VERIFY(thread_join(za[t].za_threadid, NULL, NULL) == 0);
if (t < zopt_datasets) { if (t < zopt_datasets) {
zil_close(za[t].za_zilog); zil_close(za[t].za_zilog);
dmu_objset_close(za[t].za_os); dmu_objset_close(za[t].za_os);
@ -4098,7 +4105,7 @@ ztest_run(char *pool)
/* Kill the resume thread */ /* Kill the resume thread */
ztest_exiting = B_TRUE; ztest_exiting = B_TRUE;
VERIFY(thr_join(resume_thread, NULL, NULL) == 0); VERIFY(thread_join(resume_id, NULL, NULL) == 0);
ztest_resume(spa); ztest_resume(spa);
/* /*

35
lib/libzpool/include/sys/zfs_context.h
View File

@ -198,24 +198,34 @@ _NOTE(CONSTCOND) } while (0)
/* /*
* Threads * Threads
*/ */
#define tsd_get(key) pthread_getspecific(key) #define THR_BOUND 0x00000001
#define tsd_set(key, val) pthread_setspecific(key, val) #define TS_RUN 0x00000002
typedef void (*thread_func_t)(void *); typedef void (*thread_func_t)(void *);
typedef pthread_t kt_did_t;
typedef struct kthread { typedef struct kthread {
list_node_t t_node; list_node_t t_node;
pthread_t t_id; kt_did_t t_tid;
pthread_attr_t t_attr; pthread_attr_t t_attr;
} kthread_t; } kthread_t;
#define curthread zk_curthread() #define tsd_get(key) pthread_getspecific(key)
#define thread_create(stk, stksize, func, arg, len, pp, state, pri) \ #define tsd_set(key, val) pthread_setspecific(key, val)
zk_thread_create((thread_func_t)func, arg) #define curthread zk_thread_current()
#define thr_join(kt, v1, v2) pthread_join(kt->t_id, v2) #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(tid, dtid, status) \
zk_thread_join(tid, dtid, status)
extern kthread_t *zk_curthread(void); extern kthread_t *zk_thread_current(void);
extern kthread_t *zk_thread_create(thread_func_t func, void *arg); extern void zk_thread_exit(void);
extern void thread_exit(void); extern kthread_t *zk_thread_create(caddr_t stk, size_t stksize,
thread_func_t func, void *arg, size_t len,
void *pp, int state, pri_t pri);
extern int zk_thread_join(kt_did_t tid, kthread_t *dtid, void **status);
#define issig(why) (FALSE) #define issig(why) (FALSE)
#define ISSIG(thr, why) (FALSE) #define ISSIG(thr, why) (FALSE)
@ -224,6 +234,8 @@ extern void thread_exit(void);
* Mutexes * Mutexes
*/ */
#define MTX_MAGIC 0x9522f51362a6e326ull #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;
uint64_t m_magic; uint64_t m_magic;
@ -244,6 +256,8 @@ extern void *mutex_owner(kmutex_t *mp);
* RW locks * RW locks
*/ */
#define RW_MAGIC 0x4d31fb123648e78aull #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;
void *rw_wr_owner; void *rw_wr_owner;
@ -345,6 +359,7 @@ 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 *, void *);
extern void system_taskq_init(void); extern void system_taskq_init(void);
extern void system_taskq_fini(void);
#define XVA_MAPSIZE 3 #define XVA_MAPSIZE 3
#define XVA_MAGIC 0x78766174 #define XVA_MAGIC 0x78766174

265
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>
@ -56,64 +57,157 @@ struct utsname utsname = {
* ========================================================================= * =========================================================================
*/ */
kmutex_t kthread_lock; /* NOTE: Tracking each tid on a list and using it for curthread lookups
* is slow at best but it provides an easy way to provide a kthread
* style API on top of pthreads. For now we just want ztest to work
* to validate correctness. Performance is not much of an issue
* since that is what the in-kernel version is for. That said
* reworking this to track the kthread_t structure as thread
* specific data would be probably the best way to speed this up.
*/
pthread_cond_t kthread_cond = PTHREAD_COND_INITIALIZER;
pthread_mutex_t kthread_lock = PTHREAD_MUTEX_INITIALIZER;
list_t kthread_list; list_t kthread_list;
kthread_t * static int
zk_curthread(void) thread_count(void)
{ {
kthread_t *kt; kthread_t *kt;
pthread_t tid; int count = 0;
tid = pthread_self(); for (kt = list_head(&kthread_list); kt != NULL;
mutex_enter(&kthread_lock); kt = list_next(&kthread_list, kt))
for (kt = list_head(&kthread_list); kt != NULL; count++;
kt = list_next(&kthread_list, kt)) {
if (kt->t_id == tid) { return count;
mutex_exit(&kthread_lock);
return kt;
}
}
mutex_exit(&kthread_lock);
return NULL;
} }
kthread_t * static void
zk_thread_create(thread_func_t func, void *arg) thread_init(void)
{ {
kthread_t *kt; kthread_t *kt;
/* Initialize list for tracking kthreads */
list_create(&kthread_list, sizeof (kthread_t),
offsetof(kthread_t, t_node));
/* Create entry for primary kthread */
kt = umem_zalloc(sizeof(kthread_t), UMEM_NOFAIL); kt = umem_zalloc(sizeof(kthread_t), UMEM_NOFAIL);
list_link_init(&kt->t_node);
VERIFY(pthread_attr_init(&kt->t_attr) == 0); VERIFY3U(kt->t_tid = pthread_self(), !=, 0);
VERIFY(pthread_attr_setdetachstate(&kt->t_attr, VERIFY3S(pthread_attr_init(&kt->t_attr), ==, 0);
PTHREAD_CREATE_DETACHED) == 0); VERIFY3S(pthread_mutex_lock(&kthread_lock), ==, 0);
VERIFY(pthread_create(&kt->t_id, &kt->t_attr,
(void *(*)(void *))func, arg) == 0);
mutex_enter(&kthread_lock);
list_insert_head(&kthread_list, kt); list_insert_head(&kthread_list, kt);
mutex_exit(&kthread_lock); VERIFY3S(pthread_mutex_unlock(&kthread_lock), ==, 0);
return kt;
} }
void static void
thread_exit(void) thread_fini(void)
{ {
kthread_t *kt; kthread_t *kt;
struct timespec ts = { 0 };
int count;
VERIFY((kt = curthread) != NULL); /* Wait for all threads to exit via thread_exit() */
VERIFY3S(pthread_mutex_lock(&kthread_lock), ==, 0);
while ((count = thread_count()) > 1) {
printf("Waiting for %d\n", count);
clock_gettime(CLOCK_REALTIME, &ts);
ts.tv_sec += 1;
pthread_cond_timedwait(&kthread_cond, &kthread_lock, &ts);
}
mutex_enter(&kthread_lock); ASSERT3S(thread_count(), ==, 1);
kt = list_head(&kthread_list);
list_remove(&kthread_list, kt); list_remove(&kthread_list, kt);
mutex_exit(&kthread_lock); VERIFY3S(pthread_mutex_unlock(&kthread_lock), ==, 0);
VERIFY(pthread_attr_destroy(&kt->t_attr) == 0); VERIFY(pthread_attr_destroy(&kt->t_attr) == 0);
umem_free(kt, sizeof(kthread_t)); umem_free(kt, sizeof(kthread_t));
/* Cleanup list for tracking kthreads */
list_destroy(&kthread_list);
}
kthread_t *
zk_thread_current(void)
{
kt_did_t tid = pthread_self();
kthread_t *kt;
int count = 1;
/*
* Because a newly created thread may call zk_thread_current()
* before the thread parent has had time to add the thread's tid
* to our lookup list. We will loop as long as there are tid
* which have not yet been set which must be one of ours.
* Yes it's a hack, at some point we can just use native pthreads.
*/
while (count > 0) {
count = 0;
VERIFY3S(pthread_mutex_lock(&kthread_lock), ==, 0);
for (kt = list_head(&kthread_list); kt != NULL;
kt = list_next(&kthread_list, kt)) {
if (kt->t_tid == tid) {
VERIFY3S(pthread_mutex_unlock(
&kthread_lock), ==, 0);
return kt;
}
if (kt->t_tid == (kt_did_t)-1)
count++;
}
VERIFY3S(pthread_mutex_unlock(&kthread_lock), ==, 0);
}
/* Unreachable */
ASSERT(0);
return NULL;
}
kthread_t *
zk_thread_create(caddr_t stk, size_t stksize, thread_func_t func, void *arg,
size_t len, void *pp, int state, pri_t pri)
{
kthread_t *kt;
kt = umem_zalloc(sizeof(kthread_t), UMEM_NOFAIL);
kt->t_tid = (kt_did_t)-1;
list_link_init(&kt->t_node);
VERIFY(pthread_attr_init(&kt->t_attr) == 0);
VERIFY3S(pthread_mutex_lock(&kthread_lock), ==, 0);
list_insert_head(&kthread_list, kt);
VERIFY3S(pthread_mutex_unlock(&kthread_lock), ==, 0);
VERIFY(pthread_create(&kt->t_tid, &kt->t_attr,
(void *(*)(void *))func, arg) == 0);
return kt;
}
int
zk_thread_join(kt_did_t tid, kthread_t *dtid, void **status)
{
return pthread_join(tid, status);
}
void
zk_thread_exit(void)
{
kthread_t *kt;
VERIFY3P(kt = curthread, !=, NULL);
VERIFY3S(pthread_mutex_lock(&kthread_lock), ==, 0);
list_remove(&kthread_list, kt);
VERIFY3S(pthread_mutex_unlock(&kthread_lock), ==, 0);
VERIFY(pthread_attr_destroy(&kt->t_attr) == 0);
umem_free(kt, sizeof(kthread_t));
pthread_cond_broadcast(&kthread_cond);
pthread_exit(NULL); pthread_exit(NULL);
} }
@ -148,14 +242,14 @@ kstat_delete(kstat_t *ksp)
void void
mutex_init(kmutex_t *mp, char *name, int type, void *cookie) mutex_init(kmutex_t *mp, char *name, int type, void *cookie)
{ {
ASSERT(type == MUTEX_DEFAULT); ASSERT3S(type, ==, MUTEX_DEFAULT);
ASSERT(cookie == NULL); ASSERT3P(cookie, ==, NULL);
#ifdef IM_FEELING_LUCKY #ifdef IM_FEELING_LUCKY
ASSERT(mp->m_magic != MTX_MAGIC); ASSERT3U(mp->m_magic, !=, MTX_MAGIC);
#endif #endif
mp->m_owner = NULL; mp->m_owner = MTX_INIT;
mp->m_magic = MTX_MAGIC; mp->m_magic = MTX_MAGIC;
VERIFY3S(pthread_mutex_init(&mp->m_lock, NULL), ==, 0); VERIFY3S(pthread_mutex_init(&mp->m_lock, NULL), ==, 0);
} }
@ -163,31 +257,31 @@ mutex_init(kmutex_t *mp, char *name, int type, void *cookie)
void void
mutex_destroy(kmutex_t *mp) mutex_destroy(kmutex_t *mp)
{ {
ASSERT(mp->m_magic == MTX_MAGIC); ASSERT3U(mp->m_magic, ==, MTX_MAGIC);
ASSERT(mp->m_owner == NULL); ASSERT3P(mp->m_owner, ==, MTX_INIT);
VERIFY3S(pthread_mutex_destroy(&(mp)->m_lock), ==, 0); VERIFY3S(pthread_mutex_destroy(&(mp)->m_lock), ==, 0);
mp->m_owner = (void *)-1UL; mp->m_owner = MTX_DEST;
mp->m_magic = 0; mp->m_magic = 0;
} }
void void
mutex_enter(kmutex_t *mp) mutex_enter(kmutex_t *mp)
{ {
ASSERT(mp->m_magic == MTX_MAGIC); 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);
VERIFY3S(pthread_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->m_magic == MTX_MAGIC); ASSERT3U(mp->m_magic, ==, MTX_MAGIC);
ASSERT(mp->m_owner != (void *)-1UL); ASSERT3P(mp->m_owner, !=, MTX_DEST);
if (0 == pthread_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 {
@ -198,16 +292,16 @@ mutex_tryenter(kmutex_t *mp)
void void
mutex_exit(kmutex_t *mp) mutex_exit(kmutex_t *mp)
{ {
ASSERT(mp->m_magic == MTX_MAGIC); 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;
VERIFY3S(pthread_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->m_magic == MTX_MAGIC); ASSERT3U(mp->m_magic, ==, MTX_MAGIC);
return (mp->m_owner); return (mp->m_owner);
} }
@ -220,16 +314,16 @@ mutex_owner(kmutex_t *mp)
void void
rw_init(krwlock_t *rwlp, char *name, int type, void *arg) rw_init(krwlock_t *rwlp, char *name, int type, void *arg)
{ {
ASSERT(type == RW_DEFAULT); ASSERT3S(type, ==, RW_DEFAULT);
ASSERT(arg == NULL); ASSERT3P(arg, ==, NULL);
#ifdef IM_FEELING_LUCKY #ifdef IM_FEELING_LUCKY
ASSERT(rwlp->rw_magic != RW_MAGIC); ASSERT3U(rwlp->rw_magic, !=, RW_MAGIC);
#endif #endif
VERIFY3S(pthread_rwlock_init(&rwlp->rw_lock, NULL), ==, 0); VERIFY3S(pthread_rwlock_init(&rwlp->rw_lock, NULL), ==, 0);
rwlp->rw_owner = NULL; rwlp->rw_owner = RW_INIT;
rwlp->rw_wr_owner = NULL; rwlp->rw_wr_owner = RW_INIT;
rwlp->rw_readers = 0; rwlp->rw_readers = 0;
rwlp->rw_magic = RW_MAGIC; rwlp->rw_magic = RW_MAGIC;
} }
@ -237,7 +331,7 @@ rw_init(krwlock_t *rwlp, char *name, int type, void *arg)
void void
rw_destroy(krwlock_t *rwlp) rw_destroy(krwlock_t *rwlp)
{ {
ASSERT(rwlp->rw_magic == RW_MAGIC); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
VERIFY3S(pthread_rwlock_destroy(&rwlp->rw_lock), ==, 0); VERIFY3S(pthread_rwlock_destroy(&rwlp->rw_lock), ==, 0);
rwlp->rw_magic = 0; rwlp->rw_magic = 0;
@ -246,18 +340,18 @@ rw_destroy(krwlock_t *rwlp)
void void
rw_enter(krwlock_t *rwlp, krw_t rw) rw_enter(krwlock_t *rwlp, krw_t rw)
{ {
ASSERT(rwlp->rw_magic == RW_MAGIC); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
ASSERT(rwlp->rw_owner != curthread); ASSERT3P(rwlp->rw_owner, !=, curthread);
ASSERT(rwlp->rw_wr_owner != curthread); ASSERT3P(rwlp->rw_wr_owner, !=, curthread);
if (rw == RW_READER) { if (rw == RW_READER) {
VERIFY3S(pthread_rwlock_rdlock(&rwlp->rw_lock), ==, 0); VERIFY3S(pthread_rwlock_rdlock(&rwlp->rw_lock), ==, 0);
ASSERT(rwlp->rw_wr_owner == NULL); ASSERT3P(rwlp->rw_wr_owner, ==, RW_INIT);
atomic_inc_uint(&rwlp->rw_readers); atomic_inc_uint(&rwlp->rw_readers);
} else { } else {
VERIFY3S(pthread_rwlock_wrlock(&rwlp->rw_lock), ==, 0); VERIFY3S(pthread_rwlock_wrlock(&rwlp->rw_lock), ==, 0);
ASSERT(rwlp->rw_wr_owner == NULL); ASSERT3P(rwlp->rw_wr_owner, ==, RW_INIT);
ASSERT3U(rwlp->rw_readers, ==, 0); ASSERT3U(rwlp->rw_readers, ==, 0);
rwlp->rw_wr_owner = curthread; rwlp->rw_wr_owner = curthread;
@ -269,15 +363,15 @@ rw_enter(krwlock_t *rwlp, krw_t rw)
void void
rw_exit(krwlock_t *rwlp) rw_exit(krwlock_t *rwlp)
{ {
ASSERT(rwlp->rw_magic == RW_MAGIC); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
ASSERT(RW_LOCK_HELD(rwlp)); ASSERT(RW_LOCK_HELD(rwlp));
if (RW_READ_HELD(rwlp)) if (RW_READ_HELD(rwlp))
atomic_dec_uint(&rwlp->rw_readers); atomic_dec_uint(&rwlp->rw_readers);
else else
rwlp->rw_wr_owner = NULL; rwlp->rw_wr_owner = RW_INIT;
rwlp->rw_owner = NULL; rwlp->rw_owner = RW_INIT;
VERIFY3S(pthread_rwlock_unlock(&rwlp->rw_lock), ==, 0); VERIFY3S(pthread_rwlock_unlock(&rwlp->rw_lock), ==, 0);
} }
@ -286,7 +380,7 @@ rw_tryenter(krwlock_t *rwlp, krw_t rw)
{ {
int rv; int rv;
ASSERT(rwlp->rw_magic == RW_MAGIC); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
if (rw == RW_READER) if (rw == RW_READER)
rv = pthread_rwlock_tryrdlock(&rwlp->rw_lock); rv = pthread_rwlock_tryrdlock(&rwlp->rw_lock);
@ -294,7 +388,7 @@ rw_tryenter(krwlock_t *rwlp, krw_t rw)
rv = pthread_rwlock_trywrlock(&rwlp->rw_lock); rv = pthread_rwlock_trywrlock(&rwlp->rw_lock);
if (rv == 0) { if (rv == 0) {
ASSERT(rwlp->rw_wr_owner == NULL); ASSERT3P(rwlp->rw_wr_owner, ==, RW_INIT);
if (rw == RW_READER) if (rw == RW_READER)
atomic_inc_uint(&rwlp->rw_readers); atomic_inc_uint(&rwlp->rw_readers);
@ -316,7 +410,7 @@ rw_tryenter(krwlock_t *rwlp, krw_t rw)
int int
rw_tryupgrade(krwlock_t *rwlp) rw_tryupgrade(krwlock_t *rwlp)
{ {
ASSERT(rwlp->rw_magic == RW_MAGIC); ASSERT3U(rwlp->rw_magic, ==, RW_MAGIC);
return (0); return (0);
} }
@ -330,10 +424,10 @@ rw_tryupgrade(krwlock_t *rwlp)
void void
cv_init(kcondvar_t *cv, char *name, int type, void *arg) cv_init(kcondvar_t *cv, char *name, int type, void *arg)
{ {
ASSERT(type == CV_DEFAULT); ASSERT3S(type, ==, CV_DEFAULT);
#ifdef IM_FEELING_LUCKY #ifdef IM_FEELING_LUCKY
ASSERT(cv->cv_magic != CV_MAGIC); ASSERT3U(cv->cv_magic, !=, CV_MAGIC);
#endif #endif
cv->cv_magic = CV_MAGIC; cv->cv_magic = CV_MAGIC;
@ -344,7 +438,7 @@ cv_init(kcondvar_t *cv, char *name, int type, void *arg)
void void
cv_destroy(kcondvar_t *cv) cv_destroy(kcondvar_t *cv)
{ {
ASSERT(cv->cv_magic == CV_MAGIC); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
VERIFY3S(pthread_cond_destroy(&cv->cv), ==, 0); VERIFY3S(pthread_cond_destroy(&cv->cv), ==, 0);
cv->cv_magic = 0; cv->cv_magic = 0;
} }
@ -352,9 +446,9 @@ cv_destroy(kcondvar_t *cv)
void void
cv_wait(kcondvar_t *cv, kmutex_t *mp) cv_wait(kcondvar_t *cv, kmutex_t *mp)
{ {
ASSERT(cv->cv_magic == CV_MAGIC); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
ASSERT(mutex_owner(mp) == curthread); ASSERT3P(mutex_owner(mp), ==, curthread);
mp->m_owner = NULL; mp->m_owner = MTX_INIT;
int ret = pthread_cond_wait(&cv->cv, &mp->m_lock); int ret = pthread_cond_wait(&cv->cv, &mp->m_lock);
if (ret != 0) if (ret != 0)
VERIFY3S(ret, ==, EINTR); VERIFY3S(ret, ==, EINTR);
@ -369,7 +463,7 @@ cv_timedwait(kcondvar_t *cv, kmutex_t *mp, clock_t abstime)
timestruc_t ts; timestruc_t ts;
clock_t delta; clock_t delta;
ASSERT(cv->cv_magic == CV_MAGIC); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
top: top:
delta = abstime - lbolt; delta = abstime - lbolt;
@ -385,8 +479,8 @@ top:
ts.tv_nsec -= NANOSEC; ts.tv_nsec -= NANOSEC;
} }
ASSERT(mutex_owner(mp) == curthread); ASSERT3P(mutex_owner(mp), ==, curthread);
mp->m_owner = NULL; mp->m_owner = MTX_INIT;
error = pthread_cond_timedwait(&cv->cv, &mp->m_lock, &ts); error = pthread_cond_timedwait(&cv->cv, &mp->m_lock, &ts);
mp->m_owner = curthread; mp->m_owner = curthread;
@ -404,14 +498,14 @@ top:
void void
cv_signal(kcondvar_t *cv) cv_signal(kcondvar_t *cv)
{ {
ASSERT(cv->cv_magic == CV_MAGIC); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
VERIFY3S(pthread_cond_signal(&cv->cv), ==, 0); VERIFY3S(pthread_cond_signal(&cv->cv), ==, 0);
} }
void void
cv_broadcast(kcondvar_t *cv) cv_broadcast(kcondvar_t *cv)
{ {
ASSERT(cv->cv_magic == CV_MAGIC); ASSERT3U(cv->cv_magic, ==, CV_MAGIC);
VERIFY3S(pthread_cond_broadcast(&cv->cv), ==, 0); VERIFY3S(pthread_cond_broadcast(&cv->cv), ==, 0);
} }
@ -895,12 +989,8 @@ 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);
mutex_init(&kthread_lock, NULL, MUTEX_DEFAULT, NULL); thread_init();
list_create(&kthread_list, sizeof (kthread_t),
offsetof(kthread_t, t_node));
system_taskq_init(); system_taskq_init();
spa_init(mode); spa_init(mode);
} }
@ -908,9 +998,8 @@ void
kernel_fini(void) kernel_fini(void)
{ {
spa_fini(); spa_fini();
system_taskq_fini();
list_destroy(&kthread_list); thread_fini();
mutex_destroy(&kthread_lock);
close(random_fd); close(random_fd);
close(urandom_fd); close(urandom_fd);

20
lib/libzpool/taskq.c
View File

@ -43,6 +43,7 @@ struct taskq {
kcondvar_t tq_dispatch_cv; kcondvar_t tq_dispatch_cv;
kcondvar_t tq_wait_cv; kcondvar_t tq_wait_cv;
kthread_t **tq_threadlist; kthread_t **tq_threadlist;
kt_did_t *tq_idlist;
int tq_flags; int tq_flags;
int tq_active; int tq_active;
int tq_nthreads; int tq_nthreads;
@ -163,6 +164,7 @@ 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);
thread_exit();
return (NULL); return (NULL);
} }
@ -198,7 +200,10 @@ 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(kthread_t *), KM_SLEEP); VERIFY3P((tq->tq_threadlist = kmem_alloc(tq->tq_nthreads *
sizeof(kthread_t *), KM_SLEEP)), !=, NULL);
VERIFY3P((tq->tq_idlist = kmem_alloc(tq->tq_nthreads *
sizeof(kt_did_t), KM_SLEEP)), !=, NULL);
if (flags & TASKQ_PREPOPULATE) { if (flags & TASKQ_PREPOPULATE) {
mutex_enter(&tq->tq_lock); mutex_enter(&tq->tq_lock);
@ -207,9 +212,11 @@ taskq_create(const char *name, int nthreads, pri_t pri,
mutex_exit(&tq->tq_lock); mutex_exit(&tq->tq_lock);
} }
for (t = 0; t < nthreads; t++) for (t = 0; t < tq->tq_nthreads; t++) {
VERIFY((tq->tq_threadlist[t] = thread_create(NULL, 0, VERIFY((tq->tq_threadlist[t] = thread_create(NULL, 0,
taskq_thread, tq, THR_BOUND, NULL, 0, 0)) != NULL); taskq_thread, tq, THR_BOUND, NULL, 0, 0)) != NULL);
tq->tq_idlist[t] = tq->tq_threadlist[t]->t_tid;
}
return (tq); return (tq);
} }
@ -239,9 +246,10 @@ taskq_destroy(taskq_t *tq)
mutex_exit(&tq->tq_lock); mutex_exit(&tq->tq_lock);
for (t = 0; t < nthreads; t++) for (t = 0; t < nthreads; t++)
(void) thr_join(tq->tq_threadlist[t], NULL, NULL); VERIFY3S(thread_join(tq->tq_idlist[t], NULL, NULL), ==, 0);
kmem_free(tq->tq_threadlist, nthreads * sizeof(kthread_t *)); kmem_free(tq->tq_threadlist, nthreads * sizeof(kthread_t *));
kmem_free(tq->tq_idlist, nthreads * sizeof(kt_did_t));
rw_destroy(&tq->tq_threadlock); rw_destroy(&tq->tq_threadlock);
mutex_destroy(&tq->tq_lock); mutex_destroy(&tq->tq_lock);
@ -272,3 +280,9 @@ system_taskq_init(void)
system_taskq = taskq_create("system_taskq", 64, minclsyspri, 4, 512, system_taskq = taskq_create("system_taskq", 64, minclsyspri, 4, 512,
TASKQ_DYNAMIC | TASKQ_PREPOPULATE); TASKQ_DYNAMIC | TASKQ_PREPOPULATE);
} }
void
system_taskq_fini(void)
{
taskq_destroy(system_taskq);
}

4
module/zfs/txg.c
View File

@ -446,6 +446,8 @@ txg_sync_thread(dsl_pool_t *dp)
rw_exit(&tx->tx_suspend); rw_exit(&tx->tx_suspend);
cv_broadcast(&tx->tx_sync_done_cv); cv_broadcast(&tx->tx_sync_done_cv);
} }
thread_exit();
} }
static void static void
@ -490,6 +492,8 @@ txg_quiesce_thread(dsl_pool_t *dp)
cv_broadcast(&tx->tx_sync_more_cv); cv_broadcast(&tx->tx_sync_more_cv);
cv_broadcast(&tx->tx_quiesce_done_cv); cv_broadcast(&tx->tx_quiesce_done_cv);
} }
thread_exit();
} }
/* /*