e0f0256538
when performing a write ZMS checks if the data exists in the storage to avoid double writing the same data and save some memory cycle life time. However this downgrades the write performance. Enable this feature only when CONFIG_ZMS_NO_DOUBLE_WRITE is enabled. Signed-off-by: Riadh Ghaddab <rghaddab@baylibre.com>
66 lines
1.9 KiB
Text
66 lines
1.9 KiB
Text
#Copyright (c) 2024 BayLibre SAS
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#SPDX-License-Identifier: Apache-2.0
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#Zephyr Memory Storage ZMS
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config ZMS
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bool "Zephyr Memory Storage"
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select CRC
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help
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Enable support of Zephyr Memory Storage.
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if ZMS
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config ZMS_LOOKUP_CACHE
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bool "ZMS lookup cache"
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help
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Enable ZMS cache to reduce the ZMS data lookup time.
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Each cache entry holds an address of the most recent allocation
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table entry (ATE) for all ZMS IDs that fall into that cache position.
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config ZMS_LOOKUP_CACHE_SIZE
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int "ZMS Storage lookup cache size"
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default 128
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range 1 65536
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depends on ZMS_LOOKUP_CACHE
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help
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Number of entries in ZMS lookup cache.
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It is recommended that it should be a power of 2.
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Every additional entry in cache will add 8 bytes in RAM
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config ZMS_DATA_CRC
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bool "ZMS DATA CRC"
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help
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Enables DATA CRC
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config ZMS_CUSTOMIZE_BLOCK_SIZE
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bool "Customize the size of the buffer used internally for reads and writes"
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help
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ZMS uses an internal buffer to read/write and compare stored data.
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Increasing the size of this buffer should be done carefully in order to not
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overflow the stack.
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Increasing this buffer means as well that ZMS could work with storage devices
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that have larger write-block-size which decreases ZMS performance
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config ZMS_CUSTOM_BLOCK_SIZE
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int "ZMS internal buffer size"
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default 32
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depends on ZMS_CUSTOMIZE_BLOCK_SIZE
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help
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Changes the internal buffer size of ZMS
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config ZMS_NO_DOUBLE_WRITE
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bool "Avoid writing the same data again in the storage"
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help
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For some memory technologies, write cycles for memory cells are limited and any
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unncessary writes should be avoided.
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Enable this config to avoid rewriting data in the storage if it already exists.
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This option will reduce write performance as it will need to do a research of the
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data in the whole storage before any write.
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module = ZMS
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module-str = zms
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source "subsys/logging/Kconfig.template.log_config"
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endif # ZMS
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