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Adding collision table locks

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Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski
2019-09-23 11:08:27 -04:00
parent 938795e081
commit 5684b53d9b
11 changed files with 210 additions and 33 deletions
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74
src/concurrency/ocf_metadata_concurrency.c
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@@ -22,19 +22,44 @@ void ocf_metadata_concurrency_deinit(struct ocf_metadata_lock *metadata_lock)
int ocf_metadata_concurrency_attached_init(
struct ocf_metadata_lock *metadata_lock, ocf_cache_t cache,
uint64_t hash_table_entries)
uint64_t hash_table_entries, uint32_t colision_table_pages)
{
uint64_t i;
int err = 0;
metadata_lock->cache = cache;
metadata_lock->num_hash_entries = hash_table_entries;
metadata_lock->hash = env_vzalloc(sizeof(env_rwsem) *
hash_table_entries);
if (!metadata_lock->hash)
metadata_lock->collision_pages = env_vzalloc(sizeof(env_rwsem) *
colision_table_pages);
if (!metadata_lock->hash ||
!metadata_lock->collision_pages) {
env_vfree(metadata_lock->hash);
env_vfree(metadata_lock->collision_pages);
metadata_lock->hash = NULL;
metadata_lock->collision_pages = NULL;
return -OCF_ERR_NO_MEM;
}
for (i = 0; i < hash_table_entries; i++)
env_rwsem_init(&metadata_lock->hash[i]);
for (i = 0; i < colision_table_pages; i++) {
err = env_rwsem_init(&metadata_lock->collision_pages[i]);
if (err)
break;
}
if (err) {
while (i--)
env_rwsem_destroy(&metadata_lock->collision_pages[i]);
env_vfree(metadata_lock->collision_pages);
metadata_lock->collision_pages = NULL;
ocf_metadata_concurrency_attached_deinit(metadata_lock);
return err;
}
metadata_lock->cache = cache;
metadata_lock->num_hash_entries = hash_table_entries;
metadata_lock->num_collision_pages = colision_table_pages;
return 0;
}
@@ -44,10 +69,21 @@ void ocf_metadata_concurrency_attached_deinit(
{
uint64_t i;
for (i = 0; i < metadata_lock->num_hash_entries; i++)
env_rwsem_destroy(&metadata_lock->hash[i]);
if (metadata_lock->hash) {
for (i = 0; i < metadata_lock->num_hash_entries; i++)
env_rwsem_destroy(&metadata_lock->hash[i]);
env_vfree(metadata_lock->hash);
metadata_lock->hash = NULL;
metadata_lock->num_hash_entries = 0;
}
env_vfree(metadata_lock->hash);
if (metadata_lock->collision_pages) {
for (i = 0; i < metadata_lock->num_collision_pages; i++)
env_rwsem_destroy(&metadata_lock->collision_pages[i]);
env_vfree(metadata_lock->collision_pages);
metadata_lock->collision_pages = NULL;
metadata_lock->num_collision_pages = 0;
}
}
void ocf_metadata_start_exclusive_access(
@@ -266,3 +302,27 @@ void ocf_req_hash_unlock_wr(struct ocf_request *req)
}
ocf_metadata_end_shared_access(&req->cache->metadata.lock);
}
void ocf_collision_start_shared_access(struct ocf_metadata_lock *metadata_lock,
uint32_t page)
{
env_rwsem_down_read(&metadata_lock->collision_pages[page]);
}
void ocf_collision_end_shared_access(struct ocf_metadata_lock *metadata_lock,
uint32_t page)
{
env_rwsem_up_read(&metadata_lock->collision_pages[page]);
}
void ocf_collision_start_exclusive_access(struct ocf_metadata_lock *metadata_lock,
uint32_t page)
{
env_rwsem_down_write(&metadata_lock->collision_pages[page]);
}
void ocf_collision_end_exclusive_access(struct ocf_metadata_lock *metadata_lock,
uint32_t page)
{
env_rwsem_up_write(&metadata_lock->collision_pages[page]);
}