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Merge pull request #462 from arutk/no_bits_lock

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Get rid of status bits lock
This commit is contained in:
Robert Baldyga 2021-02-19 10:12:46 +01:00 committed by GitHub
commit 9dba49192f
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GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 56 additions and 206 deletions
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6
src/concurrency/ocf_metadata_concurrency.c
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@ -17,8 +17,6 @@ int ocf_metadata_concurrency_init(struct ocf_metadata_lock *metadata_lock)
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);
for (global_iter = 0; global_iter < OCF_NUM_GLOBAL_META_LOCKS;
global_iter++) {
err = env_rwsem_init(&metadata_lock->global[global_iter].sem);
@ -42,8 +40,6 @@ global_err:
while (global_iter--)
env_rwsem_destroy(&metadata_lock->global[global_iter].sem);
env_rwlock_destroy(&metadata_lock->status);
while (evp_iter--)
env_rwlock_destroy(&metadata_lock->eviction[evp_iter]);
@ -62,8 +58,6 @@ void ocf_metadata_concurrency_deinit(struct ocf_metadata_lock *metadata_lock)
for (i = 0; i < OCF_NUM_GLOBAL_META_LOCKS; i++)
env_rwsem_destroy(&metadata_lock->global[i].sem);
env_rwlock_destroy(&metadata_lock->status);
}
int ocf_metadata_concurrency_attached_init(

38
src/concurrency/ocf_metadata_concurrency.h
View File

@ -127,44 +127,6 @@ void ocf_metadata_end_shared_access(
struct ocf_metadata_lock *metadata_lock,
unsigned lock_idx);
static inline void ocf_metadata_status_bits_lock(
struct ocf_metadata_lock *metadata_lock, int rw)
{
if (rw == OCF_METADATA_WR)
env_rwlock_write_lock(&metadata_lock->status);
else if (rw == OCF_METADATA_RD)
env_rwlock_read_lock(&metadata_lock->status);
else
ENV_BUG();
}
static inline void ocf_metadata_status_bits_unlock(
struct ocf_metadata_lock *metadata_lock, int rw)
{
if (rw == OCF_METADATA_WR)
env_rwlock_write_unlock(&metadata_lock->status);
else if (rw == OCF_METADATA_RD)
env_rwlock_read_unlock(&metadata_lock->status);
else
ENV_BUG();
}
#define OCF_METADATA_BITS_LOCK_RD() \
ocf_metadata_status_bits_lock(&cache->metadata.lock, \
OCF_METADATA_RD)
#define OCF_METADATA_BITS_UNLOCK_RD() \
ocf_metadata_status_bits_unlock(&cache->metadata.lock, \
OCF_METADATA_RD)
#define OCF_METADATA_BITS_LOCK_WR() \
ocf_metadata_status_bits_lock(&cache->metadata.lock, \
OCF_METADATA_WR)
#define OCF_METADATA_BITS_UNLOCK_WR() \
ocf_metadata_status_bits_unlock(&cache->metadata.lock, \
OCF_METADATA_WR)
void ocf_hb_cline_prot_lock_rd(struct ocf_metadata_lock *metadata_lock,
uint32_t lock_idx, uint32_t core_id, uint64_t core_line);
void ocf_hb_cline_prot_unlock_rd(struct ocf_metadata_lock *metadata_lock,

4
src/engine/engine_rd.c
View File

@ -164,12 +164,12 @@ static int _ocf_read_generic_do(struct ocf_request *req)
return 0;
}
ocf_hb_req_prot_lock_rd(req);
ocf_hb_req_prot_lock_wr(req);
/* Set valid status bits map */
ocf_set_valid_map_info(req);
ocf_hb_req_prot_unlock_rd(req);
ocf_hb_req_prot_unlock_wr(req);
}
if (ocf_engine_needs_repart(req)) {

22
src/engine/engine_wb.c
View File

@ -27,22 +27,24 @@ static const struct ocf_io_if _io_if_wb_resume = {
static void _ocf_write_wb_update_bits(struct ocf_request *req)
{
if (ocf_engine_is_miss(req)) {
ocf_hb_req_prot_lock_rd(req);
bool miss = ocf_engine_is_miss(req);
bool clean_any = !ocf_engine_is_dirty_all(req);
if (!miss && !clean_any) {
ocf_req_set_cleaning_hot(req);
return;
}
ocf_hb_req_prot_lock_wr(req);
if (miss) {
/* Update valid status bits */
ocf_set_valid_map_info(req);
ocf_hb_req_prot_unlock_rd(req);
}
if (!ocf_engine_is_dirty_all(req)) {
ocf_hb_req_prot_lock_wr(req);
if (clean_any) {
/* set dirty bits, and mark if metadata flushing is required */
ocf_set_dirty_map_info(req);
ocf_hb_req_prot_unlock_wr(req);
}
ocf_hb_req_prot_unlock_wr(req);
ocf_req_set_cleaning_hot(req);
}

14
src/engine/engine_wo.c
View File

@ -71,6 +71,10 @@ static int ocf_read_wo_cache_do(struct ocf_request *req)
s = ocf_map_line_start_sector(req, line);
e = ocf_map_line_end_sector(req, line);
ocf_hb_cline_prot_lock_rd(&cache->metadata.lock,
req->lock_idx, entry->core_id,
entry->core_line);
/* if cacheline mapping is not sequential, send cache IO to
* previous cacheline(s) */
phys_prev = phys_curr;
@ -112,6 +116,10 @@ static int ocf_read_wo_cache_do(struct ocf_request *req)
== valid);
}
ocf_hb_cline_prot_unlock_rd(&cache->metadata.lock,
req->lock_idx, entry->core_id,
entry->core_line);
if (io && !valid) {
/* end of sequential valid region */
ocf_read_wo_cache_io(req, io_start,
@ -126,6 +134,12 @@ static int ocf_read_wo_cache_do(struct ocf_request *req)
}
offset += increment;
if (i <= e) {
ocf_hb_cline_prot_lock_rd(&cache->metadata.lock,
req->lock_idx, entry->core_id,
entry->core_line);
}
} while (i <= e);
}

33
src/engine/engine_wt.c
View File

@ -97,39 +97,36 @@ static inline void _ocf_write_wt_submit(struct ocf_request *req)
static void _ocf_write_wt_update_bits(struct ocf_request *req)
{
if (ocf_engine_is_miss(req)) {
ocf_hb_req_prot_lock_rd(req);
bool miss = ocf_engine_is_miss(req);
bool dirty_any = req->info.dirty_any;
bool repart = ocf_engine_needs_repart(req);
if (!miss && !dirty_any && !repart)
return;
ocf_hb_req_prot_lock_wr(req);
if (miss) {
/* Update valid status bits */
ocf_set_valid_map_info(req);
ocf_hb_req_prot_unlock_rd(req);
}
if (req->info.dirty_any) {
ocf_hb_req_prot_lock_wr(req);
/* Writes goes to SDD and HDD, need to update status bits from
* dirty to clean
if (dirty_any) {
/* Writes goes to both cache and core, need to update
* status bits from dirty to clean
*/
ocf_set_clean_map_info(req);
ocf_hb_req_prot_unlock_wr(req);
}
if (ocf_engine_needs_repart(req)) {
if (repart) {
OCF_DEBUG_RQ(req, "Re-Part");
ocf_hb_req_prot_lock_wr(req);
/* Probably some cache lines are assigned into wrong
* partition. Need to move it to new one
*/
ocf_part_move(req);
ocf_hb_req_prot_unlock_wr(req);
}
ocf_hb_req_prot_unlock_wr(req);
}
static int _ocf_write_wt_do(struct ocf_request *req)

144
src/metadata/metadata_status.h
View File

@ -29,16 +29,12 @@ bool ocf_metadata_test_and_clear_valid(struct ocf_cache *cache, ocf_cache_line_t
static inline void metadata_init_status_bits(struct ocf_cache *cache,
ocf_cache_line_t line)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_clear_dirty(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end);
ocf_metadata_clear_valid(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline bool metadata_test_dirty_all(struct ocf_cache *cache,
@ -46,11 +42,9 @@ static inline bool metadata_test_dirty_all(struct ocf_cache *cache,
{
bool test;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_dirty(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, true);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
}
@ -60,11 +54,9 @@ static inline bool metadata_test_dirty(struct ocf_cache *cache,
{
bool test;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_dirty(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, false);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
}
@ -72,49 +64,33 @@ static inline bool metadata_test_dirty(struct ocf_cache *cache,
static inline void metadata_set_dirty(struct ocf_cache *cache,
ocf_cache_line_t line)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_set_dirty(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline void metadata_clear_dirty(struct ocf_cache *cache,
ocf_cache_line_t line)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_clear_dirty(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline bool metadata_test_and_clear_dirty(
struct ocf_cache *cache, ocf_cache_line_t line)
{
bool test;
OCF_METADATA_BITS_LOCK_WR();
test = ocf_metadata_test_and_clear_dirty(cache, line,
return ocf_metadata_test_and_clear_dirty(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, false);
OCF_METADATA_BITS_UNLOCK_WR();
return test;
}
static inline bool metadata_test_and_set_dirty(struct ocf_cache *cache,
ocf_cache_line_t line)
{
bool test;
OCF_METADATA_BITS_LOCK_WR();
test = ocf_metadata_test_and_set_dirty(cache, line,
return ocf_metadata_test_and_set_dirty(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, false);
OCF_METADATA_BITS_UNLOCK_WR();
return test;
}
/*******************************************************************************
@ -124,27 +100,15 @@ static inline bool metadata_test_and_set_dirty(struct ocf_cache *cache,
static inline bool metadata_test_dirty_sec(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t start, uint8_t stop)
{
bool test;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_dirty(cache, line,
return ocf_metadata_test_dirty(cache, line,
start, stop, false);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
}
static inline bool metadata_test_dirty_all_sec(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t start, uint8_t stop)
{
bool test;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_dirty(cache, line,
return ocf_metadata_test_dirty(cache, line,
start, stop, true);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
}
static inline bool metadata_test_dirty_one(struct ocf_cache *cache,
@ -156,59 +120,39 @@ static inline bool metadata_test_dirty_one(struct ocf_cache *cache,
static inline bool metadata_test_dirty_out_sec(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t start, uint8_t stop)
{
bool test;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_out_dirty(cache, line, start, stop);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
return ocf_metadata_test_out_dirty(cache, line, start, stop);
}
static inline void metadata_set_dirty_sec(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t start, uint8_t stop)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_set_dirty(cache, line, start, stop);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline void metadata_clear_dirty_sec(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t start, uint8_t stop)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_clear_dirty(cache, line, start, stop);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline void metadata_set_dirty_sec_one(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t pos)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_set_dirty(cache, line, pos, pos);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline void metadata_clear_dirty_sec_one(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t pos)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_clear_dirty(cache, line, pos, pos);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline bool metadata_test_and_clear_dirty_sec(
struct ocf_cache *cache, ocf_cache_line_t line,
uint8_t start, uint8_t stop)
{
bool test = false;
OCF_METADATA_BITS_LOCK_WR();
test = ocf_metadata_test_and_clear_dirty(cache, line,
return ocf_metadata_test_and_clear_dirty(cache, line,
start, stop, false);
OCF_METADATA_BITS_UNLOCK_WR();
return test;
}
/*
@ -223,15 +167,11 @@ static inline bool metadata_clear_dirty_sec_changed(
{
bool sec_changed;
OCF_METADATA_BITS_LOCK_WR();
sec_changed = ocf_metadata_test_dirty(cache, line,
start, stop, false);
*line_is_clean = !ocf_metadata_clear_dirty(cache, line,
start, stop);
OCF_METADATA_BITS_UNLOCK_WR();
return sec_changed;
}
@ -247,12 +187,10 @@ static inline bool metadata_set_dirty_sec_changed(
{
bool sec_changed;
OCF_METADATA_BITS_LOCK_WR();
sec_changed = !ocf_metadata_test_dirty(cache, line,
start, stop, true);
*line_was_dirty = ocf_metadata_set_dirty(cache, line, start,
stop);
OCF_METADATA_BITS_UNLOCK_WR();
return sec_changed;
}
@ -264,77 +202,49 @@ static inline bool metadata_set_dirty_sec_changed(
static inline bool metadata_test_valid_any(struct ocf_cache *cache,
ocf_cache_line_t line)
{
bool test;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_valid(cache, line,
return ocf_metadata_test_valid(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, false);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
}
static inline bool metadata_test_valid(struct ocf_cache *cache,
ocf_cache_line_t line)
{
bool test;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_valid(cache, line,
return ocf_metadata_test_valid(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, true);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
}
static inline void metadata_set_valid(struct ocf_cache *cache,
ocf_cache_line_t line)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_set_valid(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline void metadata_clear_valid(struct ocf_cache *cache,
ocf_cache_line_t line)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_clear_valid(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline bool metadata_test_and_clear_valid(
struct ocf_cache *cache, ocf_cache_line_t line)
{
bool test = false;
OCF_METADATA_BITS_LOCK_WR();
test = ocf_metadata_test_and_clear_valid(cache, line,
return ocf_metadata_test_and_clear_valid(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, true);
OCF_METADATA_BITS_UNLOCK_WR();
return test;
}
static inline bool metadata_test_and_set_valid(struct ocf_cache *cache,
ocf_cache_line_t line)
{
bool test = false;
OCF_METADATA_BITS_LOCK_WR();
test = ocf_metadata_test_and_set_valid(cache, line,
return ocf_metadata_test_and_set_valid(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, true);
OCF_METADATA_BITS_UNLOCK_WR();
return test;
}
/*******************************************************************************
@ -344,28 +254,16 @@ static inline bool metadata_test_and_set_valid(struct ocf_cache *cache,
static inline bool metadata_test_valid_sec(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t start, uint8_t stop)
{
bool test;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_valid(cache, line,
return ocf_metadata_test_valid(cache, line,
start, stop, true);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
}
static inline bool metadata_test_valid_any_out_sec(
struct ocf_cache *cache, ocf_cache_line_t line,
uint8_t start, uint8_t stop)
{
bool test = false;
OCF_METADATA_BITS_LOCK_RD();
test = ocf_metadata_test_out_valid(cache, line,
return ocf_metadata_test_out_valid(cache, line,
start, stop);
OCF_METADATA_BITS_UNLOCK_RD();
return test;
}
static inline bool metadata_test_valid_one(struct ocf_cache *cache,
@ -385,38 +283,26 @@ static inline bool metadata_set_valid_sec_changed(
struct ocf_cache *cache, ocf_cache_line_t line,
uint8_t start, uint8_t stop)
{
bool was_any_valid;
OCF_METADATA_BITS_LOCK_WR();
was_any_valid = ocf_metadata_set_valid(cache, line,
return !ocf_metadata_set_valid(cache, line,
start, stop);
OCF_METADATA_BITS_UNLOCK_WR();
return !was_any_valid;
}
static inline void metadata_clear_valid_sec(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t start, uint8_t stop)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_clear_valid(cache, line, start, stop);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline void metadata_clear_valid_sec_one(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t pos)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_clear_valid(cache, line, pos, pos);
OCF_METADATA_BITS_UNLOCK_WR();
}
static inline void metadata_set_valid_sec_one(struct ocf_cache *cache,
ocf_cache_line_t line, uint8_t pos)
{
OCF_METADATA_BITS_LOCK_WR();
ocf_metadata_set_valid(cache, line, pos, pos);
OCF_METADATA_BITS_UNLOCK_WR();
}
/*
* Marks given cache line's bits as invalid
@ -431,8 +317,6 @@ static inline bool metadata_clear_valid_sec_changed(
{
bool was_any_valid;
OCF_METADATA_BITS_LOCK_WR();
was_any_valid = ocf_metadata_test_valid(cache, line,
cache->metadata.settings.sector_start,
cache->metadata.settings.sector_end, false);
@ -440,8 +324,6 @@ static inline bool metadata_clear_valid_sec_changed(
*is_valid = ocf_metadata_clear_valid(cache, line,
start, stop);
OCF_METADATA_BITS_UNLOCK_WR();
return was_any_valid && !*is_valid;
}

1
src/metadata/metadata_structs.h
View File

@ -55,7 +55,6 @@ struct ocf_metadata_lock
{
struct ocf_metadata_global_lock global[OCF_NUM_GLOBAL_META_LOCKS];
/*!< global metadata lock (GML) */
env_rwlock status; /*!< Fast lock for status bits */
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 */