config PSTORE
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tristate "Persistent store support"
|
select CRYPTO if PSTORE_COMPRESS
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default n
|
help
|
This option enables generic access to platform level
|
persistent storage via "pstore" filesystem that can
|
be mounted as /dev/pstore. Only useful if you have
|
a platform level driver that registers with pstore to
|
provide the data, so you probably should just go say "Y"
|
(or "M") to a platform specific persistent store driver
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(e.g. ACPI_APEI on X86) which will select this for you.
|
If you don't have a platform persistent store driver,
|
say N.
|
|
config PSTORE_DEFLATE_COMPRESS
|
tristate "DEFLATE (ZLIB) compression"
|
default y
|
depends on PSTORE
|
select CRYPTO_DEFLATE
|
help
|
This option enables DEFLATE (also known as ZLIB) compression
|
algorithm support.
|
|
config PSTORE_LZO_COMPRESS
|
tristate "LZO compression"
|
depends on PSTORE
|
select CRYPTO_LZO
|
help
|
This option enables LZO compression algorithm support.
|
|
config PSTORE_LZ4_COMPRESS
|
tristate "LZ4 compression"
|
depends on PSTORE
|
select CRYPTO_LZ4
|
help
|
This option enables LZ4 compression algorithm support.
|
|
config PSTORE_LZ4HC_COMPRESS
|
tristate "LZ4HC compression"
|
depends on PSTORE
|
select CRYPTO_LZ4HC
|
help
|
This option enables LZ4HC (high compression) mode algorithm.
|
|
config PSTORE_842_COMPRESS
|
bool "842 compression"
|
depends on PSTORE
|
select CRYPTO_842
|
help
|
This option enables 842 compression algorithm support.
|
|
config PSTORE_ZSTD_COMPRESS
|
bool "zstd compression"
|
depends on PSTORE
|
select CRYPTO_ZSTD
|
help
|
This option enables zstd compression algorithm support.
|
|
config PSTORE_COMPRESS
|
def_bool y
|
depends on PSTORE
|
depends on PSTORE_DEFLATE_COMPRESS || PSTORE_LZO_COMPRESS || \
|
PSTORE_LZ4_COMPRESS || PSTORE_LZ4HC_COMPRESS || \
|
PSTORE_842_COMPRESS || PSTORE_ZSTD_COMPRESS
|
|
choice
|
prompt "Default pstore compression algorithm"
|
depends on PSTORE_COMPRESS
|
help
|
This option chooses the default active compression algorithm.
|
This change be changed at boot with "pstore.compress=..." on
|
the kernel command line.
|
|
Currently, pstore has support for 6 compression algorithms:
|
deflate, lzo, lz4, lz4hc, 842 and zstd.
|
|
The default compression algorithm is deflate.
|
|
config PSTORE_DEFLATE_COMPRESS_DEFAULT
|
bool "deflate" if PSTORE_DEFLATE_COMPRESS
|
|
config PSTORE_LZO_COMPRESS_DEFAULT
|
bool "lzo" if PSTORE_LZO_COMPRESS
|
|
config PSTORE_LZ4_COMPRESS_DEFAULT
|
bool "lz4" if PSTORE_LZ4_COMPRESS
|
|
config PSTORE_LZ4HC_COMPRESS_DEFAULT
|
bool "lz4hc" if PSTORE_LZ4HC_COMPRESS
|
|
config PSTORE_842_COMPRESS_DEFAULT
|
bool "842" if PSTORE_842_COMPRESS
|
|
config PSTORE_ZSTD_COMPRESS_DEFAULT
|
bool "zstd" if PSTORE_ZSTD_COMPRESS
|
|
endchoice
|
|
config PSTORE_COMPRESS_DEFAULT
|
string
|
depends on PSTORE_COMPRESS
|
default "deflate" if PSTORE_DEFLATE_COMPRESS_DEFAULT
|
default "lzo" if PSTORE_LZO_COMPRESS_DEFAULT
|
default "lz4" if PSTORE_LZ4_COMPRESS_DEFAULT
|
default "lz4hc" if PSTORE_LZ4HC_COMPRESS_DEFAULT
|
default "842" if PSTORE_842_COMPRESS_DEFAULT
|
default "zstd" if PSTORE_ZSTD_COMPRESS_DEFAULT
|
|
config PSTORE_CONSOLE
|
bool "Log kernel console messages"
|
depends on PSTORE
|
help
|
When the option is enabled, pstore will log all kernel
|
messages, even if no oops or panic happened.
|
|
config PSTORE_CONSOLE_FORCE
|
bool "Log kernel console messages ignore loglevel setting"
|
depends on PSTORE_CONSOLE
|
help
|
When the option is enabled, allow all kernel messages
|
log to the pstore console. Enable this with a kernel bool
|
parameter like "pstore_con_force=1".
|
|
config PSTORE_CONSOLE_FORCE_ON
|
bool "Log kernel console messages ignore loglevel setting on by default"
|
depends on PSTORE_CONSOLE_FORCE
|
|
config PSTORE_PMSG
|
bool "Log user space messages"
|
depends on PSTORE
|
help
|
When the option is enabled, pstore will export a character
|
interface /dev/pmsg0 to log user space messages. On reboot
|
data can be retrieved from /sys/fs/pstore/pmsg-ramoops-[ID].
|
|
If unsure, say N.
|
|
config PSTORE_FTRACE
|
bool "Persistent function tracer"
|
depends on PSTORE
|
depends on FUNCTION_TRACER
|
depends on DEBUG_FS
|
help
|
With this option kernel traces function calls into a persistent
|
ram buffer that can be decoded and dumped after reboot through
|
pstore filesystem. It can be used to determine what function
|
was last called before a reset or panic.
|
|
If unsure, say N.
|
|
config PSTORE_RAM
|
tristate "Log panic/oops to a RAM buffer"
|
depends on PSTORE
|
depends on HAS_IOMEM
|
depends on HAVE_MEMBLOCK
|
select REED_SOLOMON
|
select REED_SOLOMON_ENC8
|
select REED_SOLOMON_DEC8
|
help
|
This enables panic and oops messages to be logged to a circular
|
buffer in RAM where it can be read back at some later point.
|
|
Note that for historical reasons, the module will be named
|
"ramoops.ko".
|
|
For more information, see Documentation/admin-guide/ramoops.rst.
|
|
config PSTORE_BOOT_LOG
|
bool "Print boot log by linux"
|
depends on PSTORE
|
help
|
Collect log from loader,uboot,ATF and so on, you can get their log by cat command
|
through linux shell
|
If unsure, say N.
|
