Current File : //usr/src/blksnap-6.3.0.73/Makefile-standalone
# SPDX-License-Identifier: GPL-2.0
# Additions for standalone module modification
EXTRA_CFLAGS += "-D BLK_SNAP_MODIFICATION"
EXTRA_CFLAGS += "-D MOD_NAME=\"standalone\" "
# The power of 2 for minimum tracking block size.
# The minimum tracking block size by default is 64 KB (shift 16)
# It's looks good for block device 128 GB or lower.
# In this case, the block device is divided into 2097152 blocks.
EXTRA_CFLAGS += "-D CONFIG_BLK_SNAP_TRACKING_BLOCK_MINIMUM_SHIFT=16"
# The limit of the maximum number of tracking blocks.
# As the size of the block device grows, the size of the tracking block
# size should also grow. For this purpose, the limit of the maximum
# number of block size is set.
EXTRA_CFLAGS += "-D CONFIG_BLK_SNAP_TRACKING_BLOCK_MAXIMUM_COUNT=2097152"
# The minimum chunk size is 256 KB (shift 18).
# It's looks good for block device 128 GB or lower.
# In this case, the block device is divided into 524288 chunks.
EXTRA_CFLAGS += "-D CONFIG_BLK_SNAP_CHUNK_MINIMUM_SHIFT=18"
# Since reading and writing to snapshots is performed in large chunks,
# a cache is implemented to optimize reading small portions of data
# from the snapshot image. As the number of chunks in the cache
# increases, memory consumption also increases.
# The minimum recommended value is four.
EXTRA_CFLAGS += "-D CONFIG_BLK_SNAP_CHUNK_MAXIMUM_IN_CACHE=32"
# A buffer can be allocated for each chunk. After use, this buffer is not
# released immediately, but is sent to the pool of free buffers.
# However, if there are too many free buffers in the pool, they are released
# immediately. The maximum size of the pool is regulated by this define.
EXTRA_CFLAGS += "-D CONFIG_BLK_SNAP_FREE_DIFF_BUFFER_POOL_SIZE=128"
# The minimum allowable size of the difference storage in sectors.
# When reached, an event is generated about the lack of free space.
EXTRA_CFLAGS += "-D CONFIG_BLK_SNAP_DIFF_STORAGE_MINIMUM=2097152"
# EXTRA_CFLAGS += "-D CONFIG_BLK_SNAP_ALLOW_DIFF_STORAGE_IN_MEMORY"
EXTRA_CFLAGS += "-D CONFIG_BLK_SNAP_DEBUG_MEMORY_LEAK"
# Some specific keys for out-of-tree module configuration
EXTRA_CFLAGS += "-D BLK_SNAP_FILELOG"
EXTRA_CFLAGS += "-D BLK_SNAP_SEQUENTALFREEZE"
#EXTRA_CFLAGS += "-D BLK_SNAP_DEBUGLOG"
# EXTRA_CFLAGS += "-D BLK_SNAP_DEBUG_DIFF_STORAGE_LISTS"
# EXTRA_CFLAGS += "-D BLK_SNAP_DEBUG_DIFF_BUFFER"
# EXTRA_CFLAGS += "-D BLK_SNAP_DEBUG_CHUNK_IO"
# EXTRA_CFLAGS += "-D BLK_SNAP_DEBUG_IMAGE_WRITE"
# EXTRA_CFLAGS += "-D BLK_SNAP_DEBUG_SECTOR_STATE"
# EXTRA_CFLAGS += "-D BLK_SNAP_DEBUG_RELEASE_SNAPSHOT"
$(KERNEL_MODULE_NAME)-y += log.o
$(KERNEL_MODULE_NAME)-y += log_histogram.o
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