diff options
| author | Mark Salyzyn | 2015-01-16 16:01:10 -0800 |
|---|---|---|
| committer | Tony Luck | 2015-01-16 16:01:10 -0800 |
| commit | 9d5438f462abd6398cdb7b3211bdcec271873a3b (patch) | |
| tree | feb8e50edd4180710602c0f4d2db9d76559da1f8 /fs/pstore/Kconfig | |
| parent | f44f96528a8cd4134a4f2c1a9d8c785600aa4888 (diff) | |
pstore: Add pmsg - user-space accessible pstore object
A secured user-space accessible pstore object. Writes
to /dev/pmsg0 are appended to the buffer, on reboot
the persistent contents are available in
/sys/fs/pstore/pmsg-ramoops-[ID].
One possible use is syslogd, or other daemon, can
write messages, then on reboot provides a means to
triage user-space activities leading up to a panic
as a companion to the pstore dmesg or console logs.
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'fs/pstore/Kconfig')
| -rw-r--r-- | fs/pstore/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig index 983d9510becc..916b8e23d968 100644 --- a/fs/pstore/Kconfig +++ b/fs/pstore/Kconfig @@ -21,6 +21,16 @@ config PSTORE_CONSOLE 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 + 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 |