From: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.kw@hitachi.com>
To: Anton Vorontsov <anton@enomsg.org>,
Colin Cross <ccross@android.com>,
Kees Cook <keescook@chromium.org>,
Tony Luck <tony.luck@intel.com>
Cc: linux-kernel@vger.kernel.org,
Nobuhiro Iwamatsu <nobuhiro.iwamatsu.kw@hitachi.com>
Subject: [PATCH v5 0/5] pstore: ramoops: support multiple pmsg instances
Date: Mon, 27 Feb 2017 10:53:54 +0900 [thread overview]
Message-ID: <1488160439-7140-1-git-send-email-nobuhiro.iwamatsu.kw@hitachi.com> (raw)
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.
pmsg_size=0x1000,0x2000,...
I did check the operation of this feature on CycloneV (socfpga) Helio board.
v5:
Add commit: "pstore: Change parameter of ramoops_free_przs()"
- I forgot addition to previous patch series.
Update commit: "pstore: support multiple pmsg instances"
- Fix comment.
- Fix initialization of num_pmsg.
v4:
Rebase to 4.10-rc5
The following patches have been removed from this series as similar functions
were modified by other commit.
- pstore: Replace four kzalloc() calls by kcalloc() in ramoops_init_przs()
- pstore: Change parameter of ramoops_free_przs()
- pstore: Rename 'przs' to 'dprzs' in struct ramoops_context
- ramoops: Rename ramoops_init_prz() to ramoops_init_dprzs()
v3:
Rebase to v4.8.
Split patch.
merged device_create().
Remove Blank lines.
Update documentiation of DT binding.
Update parsing function of ramoops_pmsg_size, add NULL termination.
Update module parameters for pmsg_size list.
Hiraku Toyooka (2):
pstore: support multiple pmsg instances
selftests/pstore: add testcases for multiple pmsg instances
Nobuhiro Iwamatsu (3):
pstore: Change parameter of ramoops_free_przs()
ramoops: Add __ramoops_init_prz() as generic function
ramoops: support multiple pmsg instances
Documentation/admin-guide/ramoops.rst | 22 ++
.../bindings/reserved-memory/ramoops.txt | 6 +-
fs/pstore/pmsg.c | 23 +-
fs/pstore/ram.c | 317 ++++++++++++++++-----
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 | 14 +-
9 files changed, 342 insertions(+), 97 deletions(-)
--
2.11.0
next reply other threads:[~2017-02-27 1:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-27 1:53 Nobuhiro Iwamatsu [this message]
2017-02-27 1:53 ` [PATCH v5 1/5] pstore: Change parameter of ramoops_free_przs() Nobuhiro Iwamatsu
2017-02-27 1:53 ` [PATCH v5 2/5] ramoops: Add __ramoops_init_prz() as generic function Nobuhiro Iwamatsu
2017-02-27 1:53 ` [PATCH v5 3/5] pstore: support multiple pmsg instances Nobuhiro Iwamatsu
2017-02-27 1:53 ` [PATCH v5 4/5] ramoops: " Nobuhiro Iwamatsu
2017-02-27 1:53 ` [PATCH v5 5/5] selftests/pstore: add testcases for " Nobuhiro Iwamatsu
2018-11-29 23:33 ` [PATCH v5 0/5] pstore: ramoops: support " Kees Cook
2018-12-03 3:37 ` Nobuhiro Iwamatsu
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