[PATCH 0/5] pstore: ramoops: support multiple pmsg instances

From: Hiraku Toyooka
Date: Wed Nov 04 2015 - 21:36:52 EST

The following series implements multiple pmsg. This feature allows
userspace program to control individual content aging or priority.

If a pstore backend module(e.g. ramoops) requires the multiple pmsg
instances when registering itself to pstore, multiple /dev/pmsg[ID]
are created. Writes to each /dev/pmsg[ID] are isolated each other. After
reboot, the contents are available in /sys/fs/pstore/pmsg-[backend]-[ID].

In addition, we add multiple pmsg support for ramoops. We can
specify multiple pmsg area size by its module parameter as follows.



Hiraku Toyooka (5):
ramoops: use persistent_ram_free() instead of kfree() for freeing prz
ramoops: introduce generic init/free functions for prz
pstore: support multiple pmsg instances
ramoops: support multiple pmsg instances
selftests/pstore: add testcases for multiple pmsg instances

Documentation/ramoops.txt | 22 ++
fs/pstore/pmsg.c | 20 ++
fs/pstore/ram.c | 213 +++++++++++++++-----
include/linux/pstore.h | 1
include/linux/pstore_ram.h | 8 +
tools/testing/selftests/pstore/common_tests | 21 ++
.../selftests/pstore/pstore_post_reboot_tests | 27 +--
tools/testing/selftests/pstore/pstore_tests | 16 +-
8 files changed, 257 insertions(+), 71 deletions(-)

Hiraku Toyooka
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