| Server IP : 74.208.127.88 / Your IP : 216.73.216.95 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /proc/self/root/lib/modules/5.4.0-163-generic/build/fs/pstore/ |
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# SPDX-License-Identifier: GPL-2.0-only config PSTORE tristate "Persistent store support" select CRYPTO if PSTORE_COMPRESS 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 (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_PMSG bool "Log user space messages" depends on PSTORE select RT_MUTEXES 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 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.