projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ef12a141 ACM |
1 | perf-buildid-cache(1) |
| 2 | ===================== | |
| 3 | ||
| 4 | NAME | |
| 5 | ---- | |
| 6 | perf-buildid-cache - Manage build-id cache. | |
| 7 | ||
| 8 | SYNOPSIS | |
| 9 | -------- | |
| 10 | [verse] | |
| 11d232ec | 11 | 'perf buildid-cache <options>' |
| ef12a141 ACM |
12 | |
| 13 | DESCRIPTION | |
| 14 | ----------- | |
| 8d8c8e4c MH |
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. | |
| 6430a94e MH |
18 | This also scans the target binary for SDT (Statically Defined Tracing) and |
| 19 | record it along with the buildid-cache, which will be used by perf-probe. | |
| 20 | For more details, see linkperf:perf-probe[1]. | |
| ef12a141 ACM |
21 | |
| 22 | OPTIONS | |
| 23 | ------- | |
| 24 | -a:: | |
| 25 | --add=:: | |
| 26 | Add specified file to the cache. | |
| fc1b691d AH |
27 | -k:: |
| 28 | --kcore:: | |
| 29 | Add specified kcore file to the cache. For the current host that is | |
| 30 | /proc/kcore which requires root permissions to read. Be aware that | |
| 31 | running 'perf buildid-cache' as root may update root's build-id cache | |
| 32 | not the user's. Use the -v option to see where the file is created. | |
| 33 | Note that the copied file contains only code sections not the whole core | |
| 34 | image. Note also that files "kallsyms" and "modules" must also be in the | |
| 35 | same directory and are also copied. All 3 files are created with read | |
| 36 | permissions for root only. kcore will not be added if there is already a | |
| 37 | kcore in the cache (with the same build-id) that has the same modules at | |
| 38 | the same addresses. Use the -v option to see if a copy of kcore is | |
| 39 | actually made. | |
| ef12a141 ACM |
40 | -r:: |
| 41 | --remove=:: | |
| 8d8c8e4c MH |
42 | Remove a cached binary which has same build-id of specified file |
| 43 | from the cache. | |
| 44 | -p:: | |
| 45 | --purge=:: | |
| 46 | Purge all cached binaries including older caches which have specified | |
| 47 | path from the cache. | |
| fbb6976c | 48 | -M:: |
| 48000a1a | 49 | --missing=:: |
| fbb6976c | 50 | List missing build ids in the cache for the specified file. |
| eeb49845 | 51 | -u:: |
| a50d11a1 MH |
52 | --update=:: |
| 53 | Update specified file of the cache. Note that this doesn't remove | |
| 54 | older entires since those may be still needed for annotating old | |
| 55 | (or remote) perf.data. Only if there is already a cache which has | |
| 56 | exactly same build-id, that is replaced by new one. It can be used | |
| 57 | to update kallsyms and kernel dso to vmlinux in order to support | |
| 58 | annotation. | |
| 59 | ||
| ef12a141 ACM |
60 | -v:: |
| 61 | --verbose:: | |
| 62 | Be more verbose. | |
| 63 | ||
| 64 | SEE ALSO | |
| 65 | -------- | |
| 11d232ec | 66 | linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-buildid-list[1] |