16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
70 lines
1.2 KiB
Text
70 lines
1.2 KiB
Text
perf-lock(1)
|
|
============
|
|
|
|
NAME
|
|
----
|
|
perf-lock - Analyze lock events
|
|
|
|
SYNOPSIS
|
|
--------
|
|
[verse]
|
|
'perf lock' {record|report|script|info}
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
You can analyze various lock behaviours
|
|
and statistics with this 'perf lock' command.
|
|
|
|
'perf lock record <command>' records lock events
|
|
between start and end <command>. And this command
|
|
produces the file "perf.data" which contains tracing
|
|
results of lock events.
|
|
|
|
'perf lock report' reports statistical data.
|
|
|
|
'perf lock script' shows raw lock events.
|
|
|
|
'perf lock info' shows metadata like threads or addresses
|
|
of lock instances.
|
|
|
|
COMMON OPTIONS
|
|
--------------
|
|
|
|
-i::
|
|
--input=<file>::
|
|
Input file name. (default: perf.data unless stdin is a fifo)
|
|
|
|
-v::
|
|
--verbose::
|
|
Be more verbose (show symbol address, etc).
|
|
|
|
-D::
|
|
--dump-raw-trace::
|
|
Dump raw trace in ASCII.
|
|
|
|
-f::
|
|
--force::
|
|
Don't complan, do it.
|
|
|
|
REPORT OPTIONS
|
|
--------------
|
|
|
|
-k::
|
|
--key=<value>::
|
|
Sorting key. Possible values: acquired (default), contended,
|
|
avg_wait, wait_total, wait_max, wait_min.
|
|
|
|
INFO OPTIONS
|
|
------------
|
|
|
|
-t::
|
|
--threads::
|
|
dump thread list in perf.data
|
|
|
|
-m::
|
|
--map::
|
|
dump map of lock instances (address:name table)
|
|
|
|
SEE ALSO
|
|
--------
|
|
linkperf:perf[1]
|