On 2015-10-30 11:44, Toke Høiland-Jørgensen wrote: > This change adds support for specifying that a particular kernel module > wants to keep its build ID debug symbol (.note.gnu.build-id). This > symbol is exported in sysfs by the kernel (if the kernel is compiled > with CONFIG_KALLSYMS) and so can be used to uniquely identify a version > of a kernel module in a running kernel (if the module is built with > suitable linker options). This is useful for keeping track of different > versions of a module when doing experiments and development. > > A kernel module Makefile can specify that the build ID should be kept by > exporting PKG_KEEP_BUILD_ID in the Build/Exports section. This will add > ~100 bytes to the size of the .ko (depending on the length of the build > ID specified). > > The default is to strip the build ID (as before), so there is no size > difference for kernel modules that do not export this variable. > > Signed-off-by: Toke Høiland-Jørgensen <t...@toke.dk> How is this more useful than simply checking a hash of the kernel module in /lib/modules and comparing that with the corresponding file on the host?
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