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| author | Nikhil V <quic_nprakash@quicinc.com> | 2024-01-22 18:45:26 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2024-02-05 14:28:54 +0100 |
| commit | a06c6f5d3cc90b3b070d7b99979d57238db77a86 (patch) | |
| tree | f52374ea2f6a428837de034636c22720cc9d8369 /kernel/power/power.h | |
| parent | 89a807625f9701154167bf6bf136adfa1be4d849 (diff) | |
| download | linux-stable-a06c6f5d3cc90b3b070d7b99979d57238db77a86.tar.gz linux-stable-a06c6f5d3cc90b3b070d7b99979d57238db77a86.tar.bz2 linux-stable-a06c6f5d3cc90b3b070d7b99979d57238db77a86.zip | |
PM: hibernate: Move to crypto APIs for LZO compression
Currently for hibernation, LZO is the only compression algorithm
available and uses the existing LZO library calls. However, there
is no flexibility to switch to other algorithms which provides better
results. The main idea is that different compression algorithms have
different characteristics and hibernation may benefit when it uses
alternate algorithms.
By moving to crypto based APIs, it lays a foundation to use other
compression algorithms for hibernation. There are no functional changes
introduced by this approach.
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/power.h')
| -rw-r--r-- | kernel/power/power.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h index 4e03046b9c4d..5efa2c987057 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -6,6 +6,7 @@ #include <linux/compiler.h> #include <linux/cpu.h> #include <linux/cpuidle.h> +#include <linux/crypto.h> struct swsusp_info { struct new_utsname uts; @@ -54,6 +55,10 @@ asmlinkage int swsusp_save(void); /* kernel/power/hibernate.c */ extern bool freezer_test_done; +extern char hib_comp_algo[CRYPTO_MAX_ALG_NAME]; + +/* kernel/power/swap.c */ +extern unsigned int swsusp_header_flags; extern int hibernation_snapshot(int platform_mode); extern int hibernation_restore(int platform_mode); |