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Change eviction spin lock to RW lock

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Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski 2021-02-05 16:05:20 -06:00
parent 1908707a3d
commit 9690f13bef
5 changed files with 31 additions and 35 deletions
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12
src/concurrency/ocf_metadata_concurrency.c
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@ -12,11 +12,8 @@ int ocf_metadata_concurrency_init(struct ocf_metadata_lock *metadata_lock)
unsigned evp_iter;
unsigned part_iter;
for (evp_iter = 0; evp_iter < OCF_NUM_EVICTION_LISTS; evp_iter++) {
err = env_spinlock_init(&metadata_lock->eviction[evp_iter]);
if (err)
goto eviction_err;
}
for (evp_iter = 0; evp_iter < OCF_NUM_EVICTION_LISTS; evp_iter++)
env_rwlock_init(&metadata_lock->eviction[evp_iter]);
env_rwlock_init(&metadata_lock->status);
@ -38,9 +35,8 @@ spinlocks_err:
rwsem_err:
env_rwlock_destroy(&metadata_lock->status);
eviction_err:
while (evp_iter--)
env_spinlock_destroy(&metadata_lock->eviction[evp_iter]);
env_rwlock_destroy(&metadata_lock->eviction[evp_iter]);
return err;
}
@ -53,7 +49,7 @@ void ocf_metadata_concurrency_deinit(struct ocf_metadata_lock *metadata_lock)
env_spinlock_destroy(&metadata_lock->partition[i]);
for (i = 0; i < OCF_NUM_EVICTION_LISTS; i++)
env_spinlock_destroy(&metadata_lock->eviction[i]);
env_rwlock_destroy(&metadata_lock->eviction[i]);
env_rwlock_destroy(&metadata_lock->status);
env_rwsem_destroy(&metadata_lock->global);

32
src/concurrency/ocf_metadata_concurrency.h
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@ -22,49 +22,49 @@ int ocf_metadata_concurrency_attached_init(
void ocf_metadata_concurrency_attached_deinit(
struct ocf_metadata_lock *metadata_lock);
static inline void ocf_metadata_eviction_lock(
static inline void ocf_metadata_eviction_wr_lock(
struct ocf_metadata_lock *metadata_lock, unsigned ev_list)
{
env_spinlock_lock(&metadata_lock->eviction[ev_list]);
env_rwlock_write_lock(&metadata_lock->eviction[ev_list]);
}
static inline void ocf_metadata_eviction_unlock(
static inline void ocf_metadata_eviction_wr_unlock(
struct ocf_metadata_lock *metadata_lock, unsigned ev_list)
{
env_spinlock_unlock(&metadata_lock->eviction[ev_list]);
env_rwlock_write_unlock(&metadata_lock->eviction[ev_list]);
}
static inline void ocf_metadata_eviction_lock_all(
static inline void ocf_metadata_eviction_wr_lock_all(
struct ocf_metadata_lock *metadata_lock)
{
uint32_t i;
for (i = 0; i < OCF_NUM_EVICTION_LISTS; i++)
ocf_metadata_eviction_lock(metadata_lock, i);
ocf_metadata_eviction_wr_lock(metadata_lock, i);
}
static inline void ocf_metadata_eviction_unlock_all(
static inline void ocf_metadata_eviction_wr_unlock_all(
struct ocf_metadata_lock *metadata_lock)
{
uint32_t i;
for (i = 0; i < OCF_NUM_EVICTION_LISTS; i++)
ocf_metadata_eviction_unlock(metadata_lock, i);
ocf_metadata_eviction_wr_unlock(metadata_lock, i);
}
#define OCF_METADATA_EVICTION_LOCK(cline) \
ocf_metadata_eviction_lock(&cache->metadata.lock, \
#define OCF_METADATA_EVICTION_WR_LOCK(cline) \
ocf_metadata_eviction_wr_lock(&cache->metadata.lock, \
cline % OCF_NUM_EVICTION_LISTS)
#define OCF_METADATA_EVICTION_UNLOCK(cline) \
ocf_metadata_eviction_unlock(&cache->metadata.lock, \
#define OCF_METADATA_EVICTION_WR_UNLOCK(cline) \
ocf_metadata_eviction_wr_unlock(&cache->metadata.lock, \
cline % OCF_NUM_EVICTION_LISTS)
#define OCF_METADATA_EVICTION_LOCK_ALL() \
ocf_metadata_eviction_lock_all(&cache->metadata.lock)
#define OCF_METADATA_EVICTION_WR_LOCK_ALL() \
ocf_metadata_eviction_wr_lock_all(&cache->metadata.lock)
#define OCF_METADATA_EVICTION_UNLOCK_ALL() \
ocf_metadata_eviction_unlock_all(&cache->metadata.lock)
#define OCF_METADATA_EVICTION_WR_UNLOCK_ALL() \
ocf_metadata_eviction_wr_unlock_all(&cache->metadata.lock)
static inline void ocf_metadata_partition_lock(
struct ocf_metadata_lock *metadata_lock,

8
src/eviction/lru.c
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@ -578,12 +578,12 @@ void evp_lru_clean_cline(ocf_cache_t cache, struct ocf_user_part *part,
clean_list = evp_lru_get_list(part, ev_list, true);
dirty_list = evp_lru_get_list(part, ev_list, false);
OCF_METADATA_EVICTION_LOCK(cline);
OCF_METADATA_EVICTION_WR_LOCK(cline);
remove_lru_list(cache, dirty_list, cline);
balance_lru_list(cache, dirty_list);
add_lru_head(cache, clean_list, cline);
balance_lru_list(cache, clean_list);
OCF_METADATA_EVICTION_UNLOCK(cline);
OCF_METADATA_EVICTION_WR_UNLOCK(cline);
}
void evp_lru_dirty_cline(ocf_cache_t cache, struct ocf_user_part *part,
@ -596,11 +596,11 @@ void evp_lru_dirty_cline(ocf_cache_t cache, struct ocf_user_part *part,
clean_list = evp_lru_get_list(part, ev_list, true);
dirty_list = evp_lru_get_list(part, ev_list, false);
OCF_METADATA_EVICTION_LOCK(cline);
OCF_METADATA_EVICTION_WR_LOCK(cline);
remove_lru_list(cache, clean_list, cline);
balance_lru_list(cache, clean_list);
add_lru_head(cache, dirty_list, cline);
balance_lru_list(cache, dirty_list);
OCF_METADATA_EVICTION_UNLOCK(cline);
OCF_METADATA_EVICTION_WR_UNLOCK(cline);
}

12
src/eviction/ops.h
View File

@ -36,9 +36,9 @@ static inline void ocf_eviction_purge_cache_line(
ENV_BUG_ON(type >= ocf_eviction_max);
if (likely(evict_policy_ops[type].rm_cline)) {
OCF_METADATA_EVICTION_LOCK(line);
OCF_METADATA_EVICTION_WR_LOCK(line);
evict_policy_ops[type].rm_cline(cache, line);
OCF_METADATA_EVICTION_UNLOCK(line);
OCF_METADATA_EVICTION_WR_UNLOCK(line);
}
}
@ -83,9 +83,9 @@ static inline void ocf_eviction_set_hot_cache_line(
ENV_BUG_ON(type >= ocf_eviction_max);
if (likely(evict_policy_ops[type].hot_cline)) {
OCF_METADATA_EVICTION_LOCK(line);
OCF_METADATA_EVICTION_WR_LOCK(line);
evict_policy_ops[type].hot_cline(cache, line);
OCF_METADATA_EVICTION_UNLOCK(line);
OCF_METADATA_EVICTION_WR_UNLOCK(line);
}
}
@ -97,9 +97,9 @@ static inline void ocf_eviction_initialize(struct ocf_cache *cache,
ENV_BUG_ON(type >= ocf_eviction_max);
if (likely(evict_policy_ops[type].init_evp)) {
OCF_METADATA_EVICTION_LOCK_ALL();
OCF_METADATA_EVICTION_WR_LOCK_ALL();
evict_policy_ops[type].init_evp(cache, part);
OCF_METADATA_EVICTION_UNLOCK_ALL();
OCF_METADATA_EVICTION_WR_UNLOCK_ALL();
}
}

2
src/metadata/metadata_structs.h
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@ -47,7 +47,7 @@ struct ocf_metadata_lock
{
env_rwsem global; /*!< global metadata lock (GML) */
env_rwlock status; /*!< Fast lock for status bits */
env_spinlock eviction[OCF_NUM_EVICTION_LISTS]; /*!< Fast lock for eviction policy */
env_rwlock eviction[OCF_NUM_EVICTION_LISTS]; /*!< Fast lock for eviction policy */
env_rwsem *hash; /*!< Hash bucket locks */
env_rwsem *collision_pages; /*!< Collision table page locks */
env_spinlock partition[OCF_IO_CLASS_MAX]; /* partition lock */