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Align each global metadata lock to 64B

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.. in order to move primitives intended to be accessed
concurrently in separate CPU cache line.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski
2021-02-12 18:52:20 -06:00
parent 05780c98ed
commit 0748f33a9d
2 changed files with 16 additions and 11 deletions
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7
src/metadata/metadata_structs.h
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@@ -47,9 +47,14 @@ struct ocf_cache_line_settings {
#define OCF_METADATA_GLOBAL_LOCK_IDX_BITS 2
#define OCF_NUM_GLOBAL_META_LOCKS (1 << (OCF_METADATA_GLOBAL_LOCK_IDX_BITS))
struct ocf_metadata_global_lock {
env_rwsem sem;
} __attribute__((aligned(64)));
struct ocf_metadata_lock
{
env_rwsem global[OCF_NUM_GLOBAL_META_LOCKS]; /*!< global metadata lock (GML) */
struct ocf_metadata_global_lock global[OCF_NUM_GLOBAL_META_LOCKS];
/*!< 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_rwsem *hash; /*!< Hash bucket locks */