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authorAruna Balakrishnaiah <aruna@linux.vnet.ibm.com>2013-08-16 13:53:10 -0700
committerTony Luck <tony.luck@intel.com>2013-08-19 10:18:11 -0700
commitb0aad7a99c1df90c23ff4bac76eea9cf25049e9e (patch)
tree3b9c9bd902ac66b1597187b57aa6a754d6d0d846 /arch/arm/xen
parent90ce4ca66864ee2de189b666e4e4230f452238a8 (diff)
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pstore: Add compression support to pstore
Add compression support to pstore which will help in capturing more data. Initially, pstore will make a call to kmsg_dump with a bigger buffer and will pass the size of bigger buffer to kmsg_dump and then compress the data to registered buffer of registered size. In case compression fails, pstore will capture the uncompressed data by making a call again to kmsg_dump with registered_buffer of registered size. Pstore will indicate the data is compressed or not with a flag in the write callback. Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/arm/xen')
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