Move metadata concurrency to a separate file

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
2019-07-24 14:00:05 -04:00
parent aa02f56b05
commit e5bed8825c
9 changed files with 164 additions and 126 deletions
--- a/src/concurrency/ocf_metadata_concurrency.h
+++ b/src/concurrency/ocf_metadata_concurrency.h
@@ -0,0 +1,132 @@
+/*
+ * Copyright(c) 2019-2019 Intel Corporation
+ * SPDX-License-Identifier: BSD-3-Clause-Clear
+ */
+#include "../ocf_cache_priv.h"
+
+#ifndef __OCF_METADATA_CONCURRENCY_H__
+#define __OCF_METADATA_CONCURRENCY_H__
+
+#define OCF_METADATA_RD 0
+#define OCF_METADATA_WR 1
+
+void ocf_metadata_concurrency_init(struct ocf_cache *cache);
+
+int ocf_metadata_concurrency_attached_init(struct ocf_cache *cache);
+
+static inline void ocf_metadata_eviction_lock(struct ocf_cache *cache)
+{
+	env_spinlock_lock(&cache->metadata.lock.eviction);
+}
+
+static inline void ocf_metadata_eviction_unlock(struct ocf_cache *cache)
+{
+	env_spinlock_unlock(&cache->metadata.lock.eviction);
+}
+
+#define OCF_METADATA_EVICTION_LOCK() \
+		ocf_metadata_eviction_lock(cache)
+
+#define OCF_METADATA_EVICTION_UNLOCK() \
+		ocf_metadata_eviction_unlock(cache)
+
+static inline void ocf_metadata_lock(struct ocf_cache *cache, int rw)
+{
+	if (rw == OCF_METADATA_WR)
+		env_rwsem_down_write(&cache->metadata.lock.collision);
+	else if (rw == OCF_METADATA_RD)
+		env_rwsem_down_read(&cache->metadata.lock.collision);
+	else
+		ENV_BUG();
+}
+
+
+static inline void ocf_metadata_unlock(struct ocf_cache *cache, int rw)
+{
+	if (rw == OCF_METADATA_WR)
+		env_rwsem_up_write(&cache->metadata.lock.collision);
+	else if (rw == OCF_METADATA_RD)
+		env_rwsem_up_read(&cache->metadata.lock.collision);
+	else
+		ENV_BUG();
+}
+
+static inline int ocf_metadata_try_lock(struct ocf_cache *cache, int rw)
+{
+	int result = 0;
+
+	if (rw == OCF_METADATA_WR) {
+		result = env_rwsem_down_write_trylock(
+				&cache->metadata.lock.collision);
+	} else if (rw == OCF_METADATA_RD) {
+		result = env_rwsem_down_read_trylock(
+				&cache->metadata.lock.collision);
+	} else {
+		ENV_BUG();
+	}
+
+	if (result)
+		return -1;
+
+	return 0;
+}
+
+static inline void ocf_metadata_status_bits_lock(
+		struct ocf_cache *cache, int rw)
+{
+	if (rw == OCF_METADATA_WR)
+		env_rwlock_write_lock(&cache->metadata.lock.status);
+	else if (rw == OCF_METADATA_RD)
+		env_rwlock_read_lock(&cache->metadata.lock.status);
+	else
+		ENV_BUG();
+}
+
+static inline void ocf_metadata_status_bits_unlock(
+		struct ocf_cache *cache, int rw)
+{
+	if (rw == OCF_METADATA_WR)
+		env_rwlock_write_unlock(&cache->metadata.lock.status);
+	else if (rw == OCF_METADATA_RD)
+		env_rwlock_read_unlock(&cache->metadata.lock.status);
+	else
+		ENV_BUG();
+}
+
+#define OCF_METADATA_LOCK_RD() \
+		ocf_metadata_lock(cache, OCF_METADATA_RD)
+
+#define OCF_METADATA_UNLOCK_RD() \
+		ocf_metadata_unlock(cache, OCF_METADATA_RD)
+
+#define OCF_METADATA_LOCK_RD_TRY() \
+		ocf_metadata_try_lock(cache, OCF_METADATA_RD)
+
+#define OCF_METADATA_LOCK_WR() \
+		ocf_metadata_lock(cache, OCF_METADATA_WR)
+
+#define OCF_METADATA_LOCK_WR_TRY() \
+		ocf_metadata_try_lock(cache, OCF_METADATA_WR)
+
+#define OCF_METADATA_UNLOCK_WR() \
+		ocf_metadata_unlock(cache, OCF_METADATA_WR)
+
+#define OCF_METADATA_BITS_LOCK_RD() \
+		ocf_metadata_status_bits_lock(cache, OCF_METADATA_RD)
+
+#define OCF_METADATA_BITS_UNLOCK_RD() \
+		ocf_metadata_status_bits_unlock(cache, OCF_METADATA_RD)
+
+#define OCF_METADATA_BITS_LOCK_WR() \
+		ocf_metadata_status_bits_lock(cache, OCF_METADATA_WR)
+
+#define OCF_METADATA_BITS_UNLOCK_WR() \
+		ocf_metadata_status_bits_unlock(cache, OCF_METADATA_WR)
+
+#define OCF_METADATA_FLUSH_LOCK() \
+		ocf_metadata_flush_lock(cache)
+
+#define OCF_METADATA_FLUSH_UNLOCK() \
+		ocf_metadata_flush_unlock(cache)
+
+#endif