user/sven/linux.git/include/linux/pstore.h, branch v4.4.190

pstore: add pstore unregister

2015-10-22T15:59:18Z

pstore doesn't support unregistering yet. It was marked as TODO. This patch adds some code to fix it: 1) Add functions to unregister kmsg/console/ftrace/pmsg. 2) Add a function to free compression buffer. 3) Unmap the memory and free it. 4) Add a function to unregister pstore filesystem. Signed-off-by: Geliang Tang Acked-by: Kees Cook [Removed __exit annotation from ramoops_remove(). Reported by Arnd Bergmann] Signed-off-by: Tony Luck

pstore: Add pstore type id for PPC64 opal nvram partition

2015-03-23T03:06:10Z

This patch adds a new PPC64 partition type to be used for opal specific nvram partition. A new partition type is needed as none of the existing type matches this partition type. Signed-off-by: Hari Bathini Reviewed-by: Kees Cook Signed-off-by: Michael Ellerman

pstore: Add pmsg - user-space accessible pstore object

2015-01-17T00:01:10Z

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 Acked-by: Kees Cook Signed-off-by: Tony Luck

pstore: Don't allow high traffic options on fragile devices

2013-12-20T21:12:01Z

Some pstore backing devices use on board flash as persistent storage. These have limited numbers of write cycles so it is a poor idea to use them from high frequency operations. Signed-off-by: Tony Luck Signed-off-by: Linus Torvalds

pstore: Introduce new argument 'compressed' in the read callback

2013-08-19T17:18:11Z

Backends will set the flag 'compressed' after reading the log from persistent store to indicate the data being returned to pstore is compressed or not. Signed-off-by: Aruna Balakrishnaiah Reviewed-by: Kees Cook Signed-off-by: Tony Luck

pstore: Add new argument 'compressed' in pstore write callback

2013-08-19T17:18:10Z

Addition of new argument 'compressed' in the write call back will help the backend to know if the data passed from pstore is compressed or not (In case where compression fails.). If compressed, the backend can add a tag indicating the data is compressed while writing to persistent store. Signed-off-by: Aruna Balakrishnaiah Reviewed-by: Kees Cook Signed-off-by: Tony Luck

pstore: Pass header size in the pstore write callback

2013-07-01T08:10:48Z

Header size is needed to distinguish between header and the dump data. Incorporate the addition of new argument (hsize) in the pstore write callback. Signed-off-by: Aruna Balakrishnaiah Acked-by: Kees Cook Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Read common partition via pstore

2013-06-20T07:05:02Z

This patch exploits pstore subsystem to read details of common partition in NVRAM to a separate file in /dev/pstore. For instance, common partition details will be stored in a file named [common-nvram-6]. Signed-off-by: Aruna Balakrishnaiah Reviewed-by: Jim Keniston Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Read of-config partition via pstore

2013-06-20T07:04:59Z

This patch set exploits the pstore subsystem to read details of of-config partition in NVRAM to a separate file in /dev/pstore. For instance, of-config partition details will be stored in a file named [of-nvram-5]. Signed-off-by: Aruna Balakrishnaiah Reviewed-by: Jim Keniston Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Read rtas partition via pstore

2013-06-20T07:04:52Z

This patch set exploits the pstore subsystem to read details of rtas partition in NVRAM to a separate file in /dev/pstore. For instance, rtas details will be stored in a file named [rtas-nvram-4]. Signed-off-by: Aruna Balakrishnaiah Reviewed-by: Jim Keniston Signed-off-by: Benjamin Herrenschmidt