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client: replace spinlock with mutex

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Thomas Schoebel-Theuer 2017-12-10 22:23:48 +01:00 committed by Thomas Schoebel-Theuer
parent 8b6f93a6db
commit 2fef63b72a
2 changed files with 14 additions and 20 deletions
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32
kernel/mars_client.c
View File

@ -238,17 +238,16 @@ static
void _hash_insert(struct client_output *output, struct client_mref_aspect *mref_a)
{
struct mref_object *mref = mref_a->object;
unsigned long flags;
int hash_index;
traced_lock(&output->lock, flags);
mutex_lock(&output->mutex);
list_del(&mref_a->io_head);
list_add_tail(&mref_a->io_head, &output->mref_list);
list_del(&mref_a->hash_head);
mref->ref_id = ++output->last_id;
hash_index = mref->ref_id % CLIENT_HASH_MAX;
list_add_tail(&mref_a->hash_head, &output->hash_table[hash_index]);
traced_unlock(&output->lock, flags);
mutex_unlock(&output->mutex);
}
static void client_ref_io(struct client_output *output, struct mref_object *mref)
@ -300,7 +299,6 @@ int receiver_thread(void *data)
struct list_head *tmp;
struct client_mref_aspect *mref_a = NULL;
struct mref_object *mref = NULL;
unsigned long flags;
if (output->recv_error) {
/* The protocol may be out of sync.
@ -333,13 +331,13 @@ int receiver_thread(void *data)
{
int hash_index = cmd.cmd_int1 % CLIENT_HASH_MAX;
traced_lock(&output->lock, flags);
mutex_lock(&output->mutex);
for (tmp = output->hash_table[hash_index].next; tmp != &output->hash_table[hash_index]; tmp = tmp->next) {
struct mref_object *tmp_mref;
mref_a = container_of(tmp, struct client_mref_aspect, hash_head);
tmp_mref = mref_a->object;
if (unlikely(!tmp_mref)) {
traced_unlock(&output->lock, flags);
mutex_unlock(&output->mutex);
MARS_ERR("bad internal mref pointer\n");
status = -EBADR;
goto done;
@ -351,7 +349,7 @@ int receiver_thread(void *data)
break;
}
}
traced_unlock(&output->lock, flags);
mutex_unlock(&output->mutex);
if (unlikely(!mref)) {
MARS_WRN("got unknown id = %d for callback\n", cmd.cmd_int1);
@ -415,9 +413,7 @@ int receiver_thread(void *data)
static
void _do_resubmit(struct client_output *output)
{
unsigned long flags;
traced_lock(&output->lock, flags);
mutex_lock(&output->mutex);
if (!list_empty(&output->wait_list)) {
struct list_head *first = output->wait_list.next;
struct list_head *last = output->wait_list.prev;
@ -428,7 +424,7 @@ void _do_resubmit(struct client_output *output)
INIT_LIST_HEAD(&output->wait_list);
MARS_IO("done re-submit %p %p\n", first, last);
}
traced_unlock(&output->lock, flags);
mutex_unlock(&output->mutex);
}
static
@ -440,7 +436,6 @@ void _do_timeout(struct client_output *output, struct list_head *anchor, bool fo
LIST_HEAD(tmp_list);
int rounds = 0;
long io_timeout = brick->power.io_timeout;
unsigned long flags;
if (io_timeout <= 0)
io_timeout = global_net_io_timeout;
@ -453,7 +448,7 @@ void _do_timeout(struct client_output *output, struct list_head *anchor, bool fo
io_timeout *= HZ;
traced_lock(&output->lock, flags);
mutex_lock(&output->mutex);
for (tmp = anchor->next, next = tmp->next; tmp != anchor; tmp = next, next = tmp->next) {
struct client_mref_aspect *mref_a;
@ -468,7 +463,7 @@ void _do_timeout(struct client_output *output, struct list_head *anchor, bool fo
list_del_init(&mref_a->io_head);
list_add_tail(&mref_a->tmp_head, &tmp_list);
}
traced_unlock(&output->lock, flags);
mutex_unlock(&output->mutex);
while (!list_empty(&tmp_list)) {
struct client_mref_aspect *mref_a;
@ -501,7 +496,6 @@ static int sender_thread(void *data)
{
struct client_output *output = data;
struct client_brick *brick = output->brick;
unsigned long flags;
bool do_kill = false;
int status = 0;
@ -569,16 +563,16 @@ static int sender_thread(void *data)
/* Grab the next mref from the queue
*/
traced_lock(&output->lock, flags);
mutex_lock(&output->mutex);
if (list_empty(&output->mref_list)) {
traced_unlock(&output->lock, flags);
mutex_unlock(&output->mutex);
continue;
}
tmp = output->mref_list.next;
list_del(tmp);
list_add(tmp, &output->wait_list);
mref_a = container_of(tmp, struct client_mref_aspect, io_head);
traced_unlock(&output->lock, flags);
mutex_unlock(&output->mutex);
mref = mref_a->object;
@ -739,7 +733,7 @@ static int client_output_construct(struct client_output *output)
for (i = 0; i < CLIENT_HASH_MAX; i++) {
INIT_LIST_HEAD(&output->hash_table[i]);
}
spin_lock_init(&output->lock);
mutex_init(&output->mutex);
INIT_LIST_HEAD(&output->mref_list);
INIT_LIST_HEAD(&output->wait_list);
init_waitqueue_head(&output->event);

2
kernel/mars_client.h
View File

@ -64,7 +64,7 @@ struct client_output {
MARS_OUTPUT(client);
atomic_t fly_count;
atomic_t timeout_count;
spinlock_t lock;
struct mutex mutex;
struct list_head mref_list;
struct list_head wait_list;
wait_queue_head_t event;