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There are some ABI documents that, while they don't generate any warnings, they have issues when parsed by get_abi.pl script on its output result. Address them, in order to provide a clean output. Reviewed-by: Tom Rix <trix@redhat.com> # for fpga-manager Reviewed-By: Kajol Jain<kjain@linux.ibm.com> # for sysfs-bus-event_source-devices-hv_gpci and sysfs-bus-event_source-devices-hv_24x7 Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for IIO Acked-by: Oded Gabbay <oded.gabbay@gmail.com> # for Habanalabs Acked-by: Vaibhav Jain <vaibhav@linux.ibm.com> # for sysfs-bus-papr-pmem Acked-by: Cezary Rojewski <cezary.rojewski@intel.com> # for catpt Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> Acked-by: Ilya Dryomov <idryomov@gmail.com> # for rbd Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/5bc78e5b68ed1e9e39135173857cb2e753be868f.1604042072.git.mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
46 lines
1.7 KiB
Text
46 lines
1.7 KiB
Text
What: /sys/fs/pstore/... (or /dev/pstore/...)
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Date: March 2011
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KernelVersion: 2.6.39
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Contact: tony.luck@intel.com
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Description: Generic interface to platform dependent persistent storage.
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Platforms that provide a mechanism to preserve some data
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across system reboots can register with this driver to
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provide a generic interface to show records captured in
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the dying moments. In the case of a panic the last part
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of the console log is captured, but other interesting
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data can also be saved::
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# mount -t pstore -o kmsg_bytes=8000 - /sys/fs/pstore
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$ ls -l /sys/fs/pstore/
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total 0
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-r--r--r-- 1 root root 7896 Nov 30 15:38 dmesg-erst-1
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Different users of this interface will result in different
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filename prefixes. Currently two are defined:
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- "dmesg" - saved console log
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- "mce" - architecture dependent data from fatal h/w error
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Once the information in a file has been read, removing
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the file will signal to the underlying persistent storage
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device that it can reclaim the space for later re-use::
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$ rm /sys/fs/pstore/dmesg-erst-1
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The expectation is that all files in /sys/fs/pstore/
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will be saved elsewhere and erased from persistent store
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soon after boot to free up space ready for the next
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catastrophe.
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The 'kmsg_bytes' mount option changes the target amount of
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data saved on each oops/panic. Pstore saves (possibly
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multiple) files based on the record size of the underlying
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persistent storage until at least this amount is reached.
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Default is 10 Kbytes.
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Pstore only supports one backend at a time. If multiple
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backends are available, the preferred backend may be
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set by passing the pstore.backend= argument to the kernel at
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boot time.
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