[RFC v2 0/2] pstore/rom: new support logger for block devices

From: liaoweixiong
Date: Tue Jan 01 2019 - 20:04:32 EST

Why should we need pstore_rom?
1. Most embedded intelligent equipment have no persistent ram, which
increases costs. We perfer to cheaper solutions, like block devices.
In fast, there is already a sample for block device logger in driver
MTD (drivers/mtd/mtdoops.c).
2. Do not any equipment have battery, which means that it lost all data
on general ram if power failure. Pstore has little to do for these

[PATCH v1]
On patch 1:
Core codes of pstore_rom, which works well on allwinner(sunxi) platform.
On patch 2:
A sample for pstore_rom, using general ram rather than block device.

[PATCH v2]
On patch 1:
Fix build as module error for redefinition of 'romz_unregister' and 'romz_register'

liaoweixiong (2):
pstore/rom: new support logger for block devices
pstore/rom: add sample for pstore_rom

fs/pstore/Kconfig | 16 +
fs/pstore/Makefile | 5 +
fs/pstore/rombuf.c | 46 +++
fs/pstore/romzone.c | 965 +++++++++++++++++++++++++++++++++++++++++++++
include/linux/pstore_rom.h | 61 +++
5 files changed, 1093 insertions(+)
create mode 100644 fs/pstore/rombuf.c
create mode 100644 fs/pstore/romzone.c
create mode 100644 include/linux/pstore_rom.h