[PATCH v5 0/2] mmc: support crash logging to MMC block devices

[Bhaskara Budiredla]

This patch introduces to mmcpstore.

v5:
 - Implement non-panic read/write support through pstore callbacks

v4:
 - Fix claiming host if host was already held or
   if the device claiming host is not runtime active

v3:
 - Justify new host ops requirement through commit msg
 - Remove 'default n' in Kconfig

v2:
 - Fix modpost issue with ARCH=sh
 - Fix usage of ifdefs in common functions
 - Add justification of new APIs to mmc_host_ops
 - Compile mmcpstore as part of mmc blk

v1: https://lore.kernel.org/linux-mmc/20201112062422.32212-1-bbudiredla@xxxxxxxxxxx/T/#t
v2: https://lore.kernel.org/linux-mmc/6762a763-5284-04dc-e636-486c74dedd34@xxxxxxxxxxxx/T/#u
v3: https://lore.kernel.org/linux-mmc/20201207115753.21728-1-bbudiredla@xxxxxxxxxxx/T/#t
v4: https://lore.kernel.org/linux-mmc/20201223144033.32571-1-bbudiredla@xxxxxxxxxxx/T/#md9fce2de5b6aaa66e8ff7cb04d138a548426a8e3

Bhaskara Budiredla (2):
  mmc: Support kmsg dumper based on pstore/blk
  mmc: cavium: Add MMC polling method to support kmsg panic/oops write

 drivers/mmc/core/Kconfig           |  14 +-
 drivers/mmc/core/Makefile          |   1 +
 drivers/mmc/core/block.c           |  19 +++
 drivers/mmc/core/block.h           |   9 ++
 drivers/mmc/core/core.c            |  44 ++++++
 drivers/mmc/core/mmcpstore.c       | 227 +++++++++++++++++++++++++++++
 drivers/mmc/host/cavium-thunderx.c |  10 ++
 drivers/mmc/host/cavium.c          |  67 +++++++++
 drivers/mmc/host/cavium.h          |   3 +
 include/linux/mmc/core.h           |   5 +
 include/linux/mmc/host.h           |  12 ++
 11 files changed, 410 insertions(+), 1 deletion(-)
 create mode 100644 drivers/mmc/core/mmcpstore.c

-- 
2.17.1