4fd15eaf42
pstore/zone: fix a kernel-doc markup
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The documented struct is psz_head and not psz_buffer.
Reviewed-by: Kees Cook <keescook@chromium.org >
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org >
Link: https://lore.kernel.org/r/a67ca4d12c3ef277dadb9e0d0df8450158e637cc.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net >
2021-01-21 14:06:00 -07:00
cbf82e3503
pstore/zone: cap the maximum device size
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Introduce an abritrary 128MiB cap to avoid malloc failures when using
a larger block device.
Signed-off-by: Christoph Hellwig <hch@lst.de >
Reviewed-by: WeiXiong Liao <gmpy.liaowx@gmail.com >
Reviewed-by: Kees Cook <keescook@chromium.org >
Signed-off-by: Kees Cook <keescook@chromium.org >
Link: https://lore.kernel.org/r/20201016132047.3068029-2-hch@lst.de
2020-12-01 11:32:55 -08:00
df561f6688
treewide: Use fallthrough pseudo-keyword
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Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.
[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org >
2020-08-23 17:36:59 -05:00
7dcb7848ba
pstore/blk: Support non-block storage devices
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Add support for non-block devices (e.g. MTD). A non-block driver calls
pstore_blk_register_device() to register iself.
In addition, pstore/zone is updated to handle non-block devices,
where an erase must be done before a write. Without this, there is no
way to remove records stored to an MTD.
Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com >
Link: https://lore.kernel.org/lkml/20200511233229.27745-10-keescook@chromium.org/
Co-developed-by: Kees Cook <keescook@chromium.org >
Signed-off-by: Kees Cook <keescook@chromium.org >
2020-05-31 19:49:00 -07:00
335426c6dc
pstore/zone: Provide way to skip "broken" zone for MTD devices
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One requirement to support MTD devices in pstore/zone is having a
way to declare certain regions as broken. Add this support to
pstore/zone.
The MTD driver should return -ENOMSG when encountering a bad region,
which tells pstore/zone to skip and try the next one.
Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com >
Link: https://lore.kernel.org/lkml/20200511233229.27745-8-keescook@chromium.org/
Co-developed-by: Colin Ian King <colin.king@canonical.com >
Signed-off-by: Colin Ian King <colin.king@canonical.com >
Link: //lore.kernel.org/lkml/20200512173801.222666-1-colin.king@canonical.com
Signed-off-by: Kees Cook <keescook@chromium.org >
2020-05-31 19:48:56 -07:00
34327e9fd2
pstore/zone,blk: Add ftrace frontend support
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Support backend for ftrace. To enable ftrace backend, just make
ftrace_size be greater than 0 and a multiple of 4096.
Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com >
Link: https://lore.kernel.org/lkml/20200511233229.27745-6-keescook@chromium.org/
Co-developed-by: Colin Ian King <colin.king@canonical.com >
Signed-off-by: Colin Ian King <colin.king@canonical.com >
Link: https://lore.kernel.org/lkml/20200512170719.221514-1-colin.king@canonical.com
Signed-off-by: Kees Cook <keescook@chromium.org >
2020-05-30 10:34:03 -07:00
cc9c4d1b55
pstore/zone,blk: Add console frontend support
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Support backend for console. To enable console backend, just make
console_size be greater than 0 and a multiple of 4096.
Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com >
Link: https://lore.kernel.org/lkml/20200511233229.27745-5-keescook@chromium.org/
Signed-off-by: Kees Cook <keescook@chromium.org >
2020-05-30 10:34:03 -07:00
0dc068265a
pstore/zone,blk: Add support for pmsg frontend
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Add pmsg support to pstore/blk (through pstore/zone). To enable, pmsg_size
must be greater than 0 and a multiple of 4096.
Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com >
Link: https://lore.kernel.org/lkml/20200511233229.27745-4-keescook@chromium.org/
Co-developed-by: Colin Ian King <colin.king@canonical.com >
Signed-off-by: Colin Ian King <colin.king@canonical.com >
Link: https://lore.kernel.org/lkml/20200512171932.222102-1-colin.king@canonical.com
Co-developed-by: Kees Cook <keescook@chromium.org >
Signed-off-by: Kees Cook <keescook@chromium.org >
2020-05-30 10:34:03 -07:00
d26c3321fe
pstore/zone: Introduce common layer to manage storage zones
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Implement a common set of APIs needed to support pstore storage zones,
based on how ramoops is designed. This will be used by pstore/blk with
the intention of migrating pstore/ram in the future.
Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com >
Link: https://lore.kernel.org/lkml/20200511233229.27745-2-keescook@chromium.org/
Co-developed-by: Kees Cook <keescook@chromium.org >
Signed-off-by: Kees Cook <keescook@chromium.org >
2020-05-30 10:34:03 -07:00
