6 perf-buildid-cache - Manage build-id cache.
11 'perf buildid-cache <options>'
15 This command manages the build-id cache. It can add, remove, update and purge
16 files to/from the cache. In the future it should as well set upper limits for
17 the space used by the cache, etc.
23 Add specified file to the cache.
26 Add specified kcore file to the cache. For the current host that is
27 /proc/kcore which requires root permissions to read. Be aware that
28 running 'perf buildid-cache' as root may update root's build-id cache
29 not the user's. Use the -v option to see where the file is created.
30 Note that the copied file contains only code sections not the whole core
31 image. Note also that files "kallsyms" and "modules" must also be in the
32 same directory and are also copied. All 3 files are created with read
33 permissions for root only. kcore will not be added if there is already a
34 kcore in the cache (with the same build-id) that has the same modules at
35 the same addresses. Use the -v option to see if a copy of kcore is
39 Remove a cached binary which has same build-id of specified file
43 Purge all cached binaries including older caches which have specified
47 List missing build ids in the cache for the specified file.
50 Update specified file of the cache. Note that this doesn't remove
51 older entires since those may be still needed for annotating old
52 (or remote) perf.data. Only if there is already a cache which has
53 exactly same build-id, that is replaced by new one. It can be used
54 to update kallsyms and kernel dso to vmlinux in order to support
63 linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-buildid-list[1]