github/ocf
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Shuffle entries within freelists

Browse Source 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga 2022-01-26 19:05:28 +01:00
parent 53f6cffe7f
commit 6a665ea6b1
1 changed files with 16 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/ocf_lru.c
View File

@ -7,6 +7,7 @@
#include "ocf_lru.h"
#include "utils/utils_cleaner.h"
#include "utils/utils_cache_line.h"
#include "utils/utils_generator.h"
#include "utils/utils_parallelize.h"
#include "concurrency/ocf_concurrency.h"
#include "mngt/ocf_mngt_common.h"
@ -883,18 +884,30 @@ static int ocf_lru_populate_handle(ocf_parallelize_t parallelize,
ocf_cache_t cache = context->cache;
ocf_cache_line_t cnt, cline;
ocf_cache_line_t entries = ocf_metadata_collision_table_entries(cache);
struct ocf_generator_bisect_state generator;
struct ocf_lru_list *list;
unsigned lru_list = shard_id;
unsigned step = 0;
uint32_t portion, offset;
uint32_t i, idx;
cnt = 0;
for (cline = shard_id; cline < entries; cline += shards_cnt) {
OCF_COND_RESCHED_DEFAULT(step);
ocf_metadata_set_partition_id(cache, cline, PARTITION_FREELIST);
portion = DIV_ROUND_UP((uint64_t)entries, shards_cnt);
offset = shard_id * portion / shards_cnt;
ocf_generator_bisect_init(&generator, portion, offset);
list = ocf_lru_get_list(&cache->free, lru_list, true);
cnt = 0;
for (i = 0; i < portion; i++) {
OCF_COND_RESCHED_DEFAULT(step);
idx = ocf_generator_bisect_next(&generator);
cline = idx * shards_cnt + shard_id;
if (cline >= entries)
continue;
ocf_metadata_set_partition_id(cache, cline, PARTITION_FREELIST);
add_lru_head_nobalance(cache, list, cline);
cnt++;