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dm vdo funnel-queue: change from uds_ to vdo_ namespace

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Also return VDO_SUCCESS from vdo_make_funnel_queue.

Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Chung Chung <cchung@redhat.com>
Signed-off-by: Matthew Sakai <msakai@redhat.com>
This commit is contained in:
Mike Snitzer 2024-02-13 13:35:28 -06:00
parent 41c58a36e2
commit 66214ed000
6 changed files with 49 additions and 49 deletions
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12
drivers/md/dm-vdo/data-vio.c
View File

@ -718,7 +718,7 @@ static void process_release_callback(struct vdo_completion *completion)
for (processed = 0; processed < DATA_VIO_RELEASE_BATCH_SIZE; processed++) {
struct data_vio *data_vio;
struct funnel_queue_entry *entry = uds_funnel_queue_poll(pool->queue);
struct funnel_queue_entry *entry = vdo_funnel_queue_poll(pool->queue);
if (entry == NULL)
break;
@ -748,7 +748,7 @@ static void process_release_callback(struct vdo_completion *completion)
/* Pairs with the barrier in schedule_releases(). */
smp_mb();
reschedule = !uds_is_funnel_queue_empty(pool->queue);
reschedule = !vdo_is_funnel_queue_empty(pool->queue);
drained = (!reschedule &&
vdo_is_state_draining(&pool->state) &&
check_for_drain_complete_locked(pool));
@ -865,8 +865,8 @@ int make_data_vio_pool(struct vdo *vdo, data_vio_count_t pool_size,
process_release_callback, vdo->thread_config.cpu_thread,
NULL);
result = uds_make_funnel_queue(&pool->queue);
if (result != UDS_SUCCESS) {
result = vdo_make_funnel_queue(&pool->queue);
if (result != VDO_SUCCESS) {
free_data_vio_pool(vdo_forget(pool));
return result;
}
@ -924,7 +924,7 @@ void free_data_vio_pool(struct data_vio_pool *pool)
destroy_data_vio(data_vio);
}
uds_free_funnel_queue(vdo_forget(pool->queue));
vdo_free_funnel_queue(vdo_forget(pool->queue));
vdo_free(pool);
}
@ -1283,7 +1283,7 @@ static void finish_cleanup(struct data_vio *data_vio)
(completion->result != VDO_SUCCESS)) {
struct data_vio_pool *pool = completion->vdo->data_vio_pool;
uds_funnel_queue_put(pool->queue, &completion->work_queue_entry_link);
vdo_funnel_queue_put(pool->queue, &completion->work_queue_entry_link);
schedule_releases(pool);
return;
}

10
drivers/md/dm-vdo/dedupe.c
View File

@ -2246,7 +2246,7 @@ static void finish_index_operation(struct uds_request *request)
atomic_read(&context->state));
}
uds_funnel_queue_put(context->zone->timed_out_complete, &context->queue_entry);
vdo_funnel_queue_put(context->zone->timed_out_complete, &context->queue_entry);
}
/**
@ -2275,7 +2275,7 @@ static void check_for_drain_complete(struct hash_zone *zone)
struct dedupe_context *context;
struct funnel_queue_entry *entry;
entry = uds_funnel_queue_poll(zone->timed_out_complete);
entry = vdo_funnel_queue_poll(zone->timed_out_complete);
if (entry == NULL)
break;
@ -2373,7 +2373,7 @@ static int __must_check initialize_zone(struct vdo *vdo, struct hash_zones *zone
INIT_LIST_HEAD(&zone->available);
INIT_LIST_HEAD(&zone->pending);
result = uds_make_funnel_queue(&zone->timed_out_complete);
result = vdo_make_funnel_queue(&zone->timed_out_complete);
if (result != VDO_SUCCESS)
return result;
@ -2475,7 +2475,7 @@ void vdo_free_hash_zones(struct hash_zones *zones)
for (i = 0; i < zones->zone_count; i++) {
struct hash_zone *zone = &zones->zones[i];
uds_free_funnel_queue(vdo_forget(zone->timed_out_complete));
vdo_free_funnel_queue(vdo_forget(zone->timed_out_complete));
vdo_int_map_free(vdo_forget(zone->hash_lock_map));
vdo_free(vdo_forget(zone->lock_array));
}
@ -2875,7 +2875,7 @@ static struct dedupe_context * __must_check acquire_context(struct hash_zone *zo
return context;
}
entry = uds_funnel_queue_poll(zone->timed_out_complete);
entry = vdo_funnel_queue_poll(zone->timed_out_complete);
return ((entry == NULL) ?
NULL : container_of(entry, struct dedupe_context, queue_entry));
}

18
drivers/md/dm-vdo/funnel-queue.c
View File

@ -9,7 +9,7 @@
#include "memory-alloc.h"
#include "permassert.h"
int uds_make_funnel_queue(struct funnel_queue **queue_ptr)
int vdo_make_funnel_queue(struct funnel_queue **queue_ptr)
{
int result;
struct funnel_queue *queue;
@ -27,10 +27,10 @@ int uds_make_funnel_queue(struct funnel_queue **queue_ptr)
queue->oldest = &queue->stub;
*queue_ptr = queue;
return UDS_SUCCESS;
return VDO_SUCCESS;
}
void uds_free_funnel_queue(struct funnel_queue *queue)
void vdo_free_funnel_queue(struct funnel_queue *queue)
{
vdo_free(queue);
}
@ -40,7 +40,7 @@ static struct funnel_queue_entry *get_oldest(struct funnel_queue *queue)
/*
* Barrier requirements: We need a read barrier between reading a "next" field pointer
* value and reading anything it points to. There's an accompanying barrier in
* uds_funnel_queue_put() between its caller setting up the entry and making it visible.
* vdo_funnel_queue_put() between its caller setting up the entry and making it visible.
*/
struct funnel_queue_entry *oldest = queue->oldest;
struct funnel_queue_entry *next = READ_ONCE(oldest->next);
@ -80,7 +80,7 @@ static struct funnel_queue_entry *get_oldest(struct funnel_queue *queue)
* Put the stub entry back on the queue, ensuring a successor will eventually be
* seen.
*/
uds_funnel_queue_put(queue, &queue->stub);
vdo_funnel_queue_put(queue, &queue->stub);
/* Check again for a successor. */
next = READ_ONCE(oldest->next);
@ -100,7 +100,7 @@ static struct funnel_queue_entry *get_oldest(struct funnel_queue *queue)
* Poll a queue, removing the oldest entry if the queue is not empty. This function must only be
* called from a single consumer thread.
*/
struct funnel_queue_entry *uds_funnel_queue_poll(struct funnel_queue *queue)
struct funnel_queue_entry *vdo_funnel_queue_poll(struct funnel_queue *queue)
{
struct funnel_queue_entry *oldest = get_oldest(queue);
@ -134,7 +134,7 @@ struct funnel_queue_entry *uds_funnel_queue_poll(struct funnel_queue *queue)
* or more entries being added such that the list view is incomplete, this function will report the
* queue as empty.
*/
bool uds_is_funnel_queue_empty(struct funnel_queue *queue)
bool vdo_is_funnel_queue_empty(struct funnel_queue *queue)
{
return get_oldest(queue) == NULL;
}
@ -143,9 +143,9 @@ bool uds_is_funnel_queue_empty(struct funnel_queue *queue)
* Check whether the funnel queue is idle or not. If the queue has entries available to be
* retrieved, it is not idle. If the queue is in a transition state with one or more entries being
* added such that the list view is incomplete, it may not be possible to retrieve an entry with
* the uds_funnel_queue_poll() function, but the queue will not be considered idle.
* the vdo_funnel_queue_poll() function, but the queue will not be considered idle.
*/
bool uds_is_funnel_queue_idle(struct funnel_queue *queue)
bool vdo_is_funnel_queue_idle(struct funnel_queue *queue)
{
/*
* Oldest is not the stub, so there's another entry, though if next is NULL we can't

26
drivers/md/dm-vdo/funnel-queue.h
View File

@ -3,8 +3,8 @@
* Copyright 2023 Red Hat
*/
#ifndef UDS_FUNNEL_QUEUE_H
#define UDS_FUNNEL_QUEUE_H
#ifndef VDO_FUNNEL_QUEUE_H
#define VDO_FUNNEL_QUEUE_H
#include <linux/atomic.h>
#include <linux/cache.h>
@ -25,19 +25,19 @@
* the queue entries, and pointers to those structures are used exclusively by the queue. No macros
* are defined to template the queue, so the offset of the funnel_queue_entry in the records placed
* in the queue must all be the same so the client can derive their structure pointer from the
* entry pointer returned by uds_funnel_queue_poll().
* entry pointer returned by vdo_funnel_queue_poll().
*
* Callers are wholly responsible for allocating and freeing the entries. Entries may be freed as
* soon as they are returned since this queue is not susceptible to the "ABA problem" present in
* many lock-free data structures. The queue is dynamically allocated to ensure cache-line
* alignment, but no other dynamic allocation is used.
*
* The algorithm is not actually 100% lock-free. There is a single point in uds_funnel_queue_put()
* The algorithm is not actually 100% lock-free. There is a single point in vdo_funnel_queue_put()
* at which a preempted producer will prevent the consumers from seeing items added to the queue by
* later producers, and only if the queue is short enough or the consumer fast enough for it to
* reach what was the end of the queue at the time of the preemption.
*
* The consumer function, uds_funnel_queue_poll(), will return NULL when the queue is empty. To
* The consumer function, vdo_funnel_queue_poll(), will return NULL when the queue is empty. To
* wait for data to consume, spin (if safe) or combine the queue with a struct event_count to
* signal the presence of new entries.
*/
@ -51,7 +51,7 @@ struct funnel_queue_entry {
/*
* The dynamically allocated queue structure, which is allocated on a cache line boundary so the
* producer and consumer fields in the structure will land on separate cache lines. This should be
* consider opaque but it is exposed here so uds_funnel_queue_put() can be inlined.
* consider opaque but it is exposed here so vdo_funnel_queue_put() can be inlined.
*/
struct __aligned(L1_CACHE_BYTES) funnel_queue {
/*
@ -67,9 +67,9 @@ struct __aligned(L1_CACHE_BYTES) funnel_queue {
struct funnel_queue_entry stub;
};
int __must_check uds_make_funnel_queue(struct funnel_queue **queue_ptr);
int __must_check vdo_make_funnel_queue(struct funnel_queue **queue_ptr);
void uds_free_funnel_queue(struct funnel_queue *queue);
void vdo_free_funnel_queue(struct funnel_queue *queue);
/*
* Put an entry on the end of the queue.
@ -79,7 +79,7 @@ void uds_free_funnel_queue(struct funnel_queue *queue);
* from the pointer that passed in here, so every entry in the queue must have the struct
* funnel_queue_entry at the same offset within the client's structure.
*/
static inline void uds_funnel_queue_put(struct funnel_queue *queue,
static inline void vdo_funnel_queue_put(struct funnel_queue *queue,
struct funnel_queue_entry *entry)
{
struct funnel_queue_entry *previous;
@ -101,10 +101,10 @@ static inline void uds_funnel_queue_put(struct funnel_queue *queue,
WRITE_ONCE(previous->next, entry);
}
struct funnel_queue_entry *__must_check uds_funnel_queue_poll(struct funnel_queue *queue);
struct funnel_queue_entry *__must_check vdo_funnel_queue_poll(struct funnel_queue *queue);
bool __must_check uds_is_funnel_queue_empty(struct funnel_queue *queue);
bool __must_check vdo_is_funnel_queue_empty(struct funnel_queue *queue);
bool __must_check uds_is_funnel_queue_idle(struct funnel_queue *queue);
bool __must_check vdo_is_funnel_queue_idle(struct funnel_queue *queue);
#endif /* UDS_FUNNEL_QUEUE_H */
#endif /* VDO_FUNNEL_QUEUE_H */

10
drivers/md/dm-vdo/funnel-workqueue.c
View File

@ -98,7 +98,7 @@ static struct vdo_completion *poll_for_completion(struct simple_work_queue *queu
int i;
for (i = queue->common.type->max_priority; i >= 0; i--) {
struct funnel_queue_entry *link = uds_funnel_queue_poll(queue->priority_lists[i]);
struct funnel_queue_entry *link = vdo_funnel_queue_poll(queue->priority_lists[i]);
if (link != NULL)
return container_of(link, struct vdo_completion, work_queue_entry_link);
@ -123,7 +123,7 @@ static void enqueue_work_queue_completion(struct simple_work_queue *queue,
completion->my_queue = &queue->common;
/* Funnel queue handles the synchronization for the put. */
uds_funnel_queue_put(queue->priority_lists[completion->priority],
vdo_funnel_queue_put(queue->priority_lists[completion->priority],
&completion->work_queue_entry_link);
/*
@ -275,7 +275,7 @@ static void free_simple_work_queue(struct simple_work_queue *queue)
unsigned int i;
for (i = 0; i <= VDO_WORK_Q_MAX_PRIORITY; i++)
uds_free_funnel_queue(queue->priority_lists[i]);
vdo_free_funnel_queue(queue->priority_lists[i]);
vdo_free(queue->common.name);
vdo_free(queue);
}
@ -340,8 +340,8 @@ static int make_simple_work_queue(const char *thread_name_prefix, const char *na
}
for (i = 0; i <= type->max_priority; i++) {
result = uds_make_funnel_queue(&queue->priority_lists[i]);
if (result != UDS_SUCCESS) {
result = vdo_make_funnel_queue(&queue->priority_lists[i]);
if (result != VDO_SUCCESS) {
free_simple_work_queue(queue);
return result;
}

22
drivers/md/dm-vdo/indexer/funnel-requestqueue.c
View File

@ -69,11 +69,11 @@ static inline struct uds_request *poll_queues(struct uds_request_queue *queue)
{
struct funnel_queue_entry *entry;
entry = uds_funnel_queue_poll(queue->retry_queue);
entry = vdo_funnel_queue_poll(queue->retry_queue);
if (entry != NULL)
return container_of(entry, struct uds_request, queue_link);
entry = uds_funnel_queue_poll(queue->main_queue);
entry = vdo_funnel_queue_poll(queue->main_queue);
if (entry != NULL)
return container_of(entry, struct uds_request, queue_link);
@ -82,8 +82,8 @@ static inline struct uds_request *poll_queues(struct uds_request_queue *queue)
static inline bool are_queues_idle(struct uds_request_queue *queue)
{
return uds_is_funnel_queue_idle(queue->retry_queue) &&
uds_is_funnel_queue_idle(queue->main_queue);
return vdo_is_funnel_queue_idle(queue->retry_queue) &&
vdo_is_funnel_queue_idle(queue->main_queue);
}
/*
@ -207,14 +207,14 @@ int uds_make_request_queue(const char *queue_name,
atomic_set(&queue->dormant, false);
init_waitqueue_head(&queue->wait_head);
result = uds_make_funnel_queue(&queue->main_queue);
if (result != UDS_SUCCESS) {
result = vdo_make_funnel_queue(&queue->main_queue);
if (result != VDO_SUCCESS) {
uds_request_queue_finish(queue);
return result;
}
result = uds_make_funnel_queue(&queue->retry_queue);
if (result != UDS_SUCCESS) {
result = vdo_make_funnel_queue(&queue->retry_queue);
if (result != VDO_SUCCESS) {
uds_request_queue_finish(queue);
return result;
}
@ -244,7 +244,7 @@ void uds_request_queue_enqueue(struct uds_request_queue *queue,
bool unbatched = request->unbatched;
sub_queue = request->requeued ? queue->retry_queue : queue->main_queue;
uds_funnel_queue_put(sub_queue, &request->queue_link);
vdo_funnel_queue_put(sub_queue, &request->queue_link);
/*
* We must wake the worker thread when it is dormant. A read fence isn't needed here since
@ -273,7 +273,7 @@ void uds_request_queue_finish(struct uds_request_queue *queue)
vdo_join_threads(queue->thread);
}
uds_free_funnel_queue(queue->main_queue);
uds_free_funnel_queue(queue->retry_queue);
vdo_free_funnel_queue(queue->main_queue);
vdo_free_funnel_queue(queue->retry_queue);
vdo_free(queue);
}