diff options
| author | Nikhil V <quic_nprakash@quicinc.com> | 2024-01-22 18:45:27 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-02-05 14:30:35 +0100 |
| commit | 8bc29736357e7f9a6bd0d16b57b5612197e1924b (patch) | |
| tree | b2942acf48cca582067198e2e8296ba030df1ce9 /kernel/power/Kconfig | |
| parent | a06c6f5d3cc90b3b070d7b99979d57238db77a86 (diff) | |
PM: hibernate: Add support for LZ4 compression for hibernation
Extend the support for LZ4 compression to be used with hibernation.
The main idea is that different compression algorithms
have different characteristics and hibernation may benefit when it uses
any of these algorithms: a default algorithm, having higher
compression rate but is slower(compression/decompression) and a
secondary algorithm, that is faster(compression/decompression) but has
lower compression rate.
LZ4 algorithm has better decompression speeds over LZO. This reduces
the hibernation image restore time.
As per test results:
LZO LZ4
Size before Compression(bytes) 682696704 682393600
Size after Compression(bytes) 146502402 155993547
Decompression Rate 335.02 MB/s 501.05 MB/s
Restore time 4.4s 3.8s
LZO is the default compression algorithm used for hibernation. Enable
CONFIG_HIBERNATION_COMP_LZ4 to set the default compressor as LZ4.
Signed-off-by: Nikhil V <quic_nprakash@quicinc.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power/Kconfig')
| -rw-r--r-- | kernel/power/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index d4167159bae8..afce8130d8b9 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -101,11 +101,16 @@ config HIBERNATION_COMP_LZO bool "lzo" depends on CRYPTO_LZO +config HIBERNATION_COMP_LZ4 + bool "lz4" + depends on CRYPTO_LZ4 + endchoice config HIBERNATION_DEF_COMP string default "lzo" if HIBERNATION_COMP_LZO + default "lz4" if HIBERNATION_COMP_LZ4 help Default compressor to be used for hibernation. |