NAME

       perf-buildid-cache - Manage build-id cache.

SYNOPSIS

       perf buildid-cache <options>

DESCRIPTION

       This command manages the build-id cache. It can add and remove files to/from the cache. In
       the future it should as well purge older entries, set upper limits for the space used by
       the cache, etc.

OPTIONS

       -a, --add=
           Add specified file to the cache.

       -k, --kcore
           Add specified kcore file to the cache. For the current host that is /proc/kcore which
           requires root permissions to read. Be aware that running perf buildid-cache as root
           may update root’s build-id cache not the user’s. Use the -v option to see where the
           file is created. Note that the copied file contains only code sections not the whole
           core image. Note also that files "kallsyms" and "modules" must also be in the same
           directory and are also copied. All 3 files are created with read permissions for root
           only. kcore will not be added if there is already a kcore in the cache (with the same
           build-id) that has the same modules at the same addresses. Use the -v option to see if
           a copy of kcore is actually made.

       -r, --remove=
           Remove specified file from the cache.

       -M, --missing=
           List missing build ids in the cache for the specified file.

       -u, --update
           Update specified file of the cache. It can be used to update kallsyms kernel dso to
           vmlinux in order to support annotation.

       -v, --verbose
           Be more verbose.

SEE ALSO

       perf-record(1), perf-report(1), perf-buildid-list(1)