perf-buildid-cache(1)
=====================

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

SYNOPSIS
--------
[verse]
'perf buildid-cache <options>'

DESCRIPTION
-----------
This command manages the build-id cache. It can add, remove, update and purge
files to/from the cache. In the future it should as well set upper limits for
the space used by the cache, etc.
This also scans the target binary for SDT (Statically Defined Tracing) and
record it along with the buildid-cache, which will be used by perf-probe.
For more details, see linkperf:perf-probe[1].

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 a cached binary which has same build-id of specified file
        from the cache.
-p::
--purge=::
        Purge all cached binaries including older caches which have specified
	path from the cache.
-M::
--missing=::
	List missing build ids in the cache for the specified file.
-u::
--update=::
	Update specified file of the cache. Note that this doesn't remove
	older entires since those may be still needed for annotating old
	(or remote) perf.data. Only if there is already a cache which has
	exactly same build-id, that is replaced by new one. It can be used
	to update kallsyms and kernel dso to vmlinux in order to support
	annotation.

-v::
--verbose::
	Be more verbose.

SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-report[1], linkperf:perf-buildid-list[1]
ption>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=32e19300a4f6705e79354cdadac3b2ef3cd0c309'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=32e19300a4f6705e79354cdadac3b2ef3cd0c309'>net</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net?id=32e19300a4f6705e79354cdadac3b2ef3cd0c309&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=7d4d5065ecb0cea9c5815d5e0df5fb586c5ee9b5'>net: ipv6: Use compressed IPv6 addresses showing route replace error</a></td><td>David Ahern</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=16a16cd35ee29d9bea54dd60e55d9c1cc685a37d'>net: ipv6: Change notifications for multipath delete to RTA_MULTIPATH</a></td><td>David Ahern</td><td>2</td><td><span class='deletions'>-1</span>/<span class='insertions'>+28</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=3b1137fe74829e021f483756a648cbb87c8a1b4a'>net: ipv6: Change notifications for multipath add to RTA_MULTIPATH</a></td><td>David Ahern</td><td>2</td><td><span class='deletions'>-3</span>/<span class='insertions'>+53</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=beb1afac518dec5a15dc92ba8f0ca016dcf457b4'>net: ipv6: Add support to dump multipath routes via RTA_MULTIPATH attribute</a></td><td>David Ahern</td><td>2</td><td><span class='deletions'>-17</span>/<span class='insertions'>+105</span></td></tr>
<tr><td><span title='2017-02-04 19:58:14 -0500'>2017-02-04</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=0ae8133586ad1c9be894411aaf8b17bb58c8efe5'>net: ipv6: Allow shorthand delete of all nexthops in multipath route</a></td><td>David Ahern</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+36</span></td></tr>
<tr><td><span title='2017-02-03 17:33:01 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=6e7bc478c9a006c701c14476ec9d389a484b4864'>net: skb_needs_check() accepts CHECKSUM_NONE for tx</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-02-03 17:28:29 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=79e7fff47b7bb4124ef970a13eac4fdeddd1fc25'>net: remove support for per driver ndo_busy_poll()</a></td><td>Eric Dumazet</td><td>2</td><td><span class='deletions'>-16</span>/<span class='insertions'>+0</span></td></tr>
<tr><td><span title='2017-02-03 16:58:20 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=52e01b84a244473074fc0612c169e2e043d58b01'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next</a></td><td>David S. Miller</td><td>53</td><td><span class='deletions'>-640</span>/<span class='insertions'>+576</span></td></tr>
<tr><td><span title='2017-02-03 16:35:43 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=69ca05ce9dec2cc95070df7f1f10ea6c9c12d237'>sched: cls_flower: expose priority to offloading netdevice</a></td><td>Jiri Pirko</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-02-03 16:23:57 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=38ab52e8e1e2dd65f2d349f82553335813b638d2'>tcp: clear pfmemalloc on outgoing skb</a></td><td>Eric Dumazet</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+7</span></td></tr>
<tr><td><span title='2017-02-03 16:01:44 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=94b5e0f970258828bf163b5ef076da4e4b0802e0'>net: ipv6: Set protocol to kernel for local routes</a></td><td>David Ahern</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-02-03 15:21:22 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=11538d039ac6efcf4f1a6c536e1b87cd3668a9fd'>bridge: vlan dst_metadata hooks in ingress and egress paths</a></td><td>Roopa Prabhu</td><td>6</td><td><span class='deletions'>-2</span>/<span class='insertions'>+82</span></td></tr>
<tr><td><span title='2017-02-03 15:21:22 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=efa5356b0d9753b9d7e63e41459eba106cce30f3'>bridge: per vlan dst_metadata netlink support</a></td><td>Roopa Prabhu</td><td>7</td><td><span class='deletions'>-48</span>/<span class='insertions'>+641</span></td></tr>
<tr><td><span title='2017-02-03 15:16:46 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=295a6e06d21e1f469c9f38b00125a13b60ad4e7c'>net/sched: act_ife: Change to use ife module</a></td><td>Yotam Gigi</td><td>2</td><td><span class='deletions'>-78</span>/<span class='insertions'>+33</span></td></tr>
<tr><td><span title='2017-02-03 15:16:45 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=1ce8460496c05379c66edc178c3c55ca4e953044'>net: Introduce ife encapsulation module</a></td><td>Yotam Gigi</td><td>5</td><td><span class='deletions'>-0</span>/<span class='insertions'>+165</span></td></tr>
<tr><td><span title='2017-02-03 15:16:45 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=1d5e7c859e81a66674d194c346119d154d31e9dc'>net/sched: act_ife: Unexport ife_tlv_meta_encode</a></td><td>Yotam Gigi</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-02-03 11:19:34 -0500'>2017-02-03</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/net?id=3541f9e8bdebce02458882b66b638d7302c1f616'>tcp: add tcp_mss_clamp() helper</a></td><td>Eric Dumazet