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
38 lines
928 B
Text
38 lines
928 B
Text
perf-help(1)
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============
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NAME
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----
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perf-help - display help information about perf
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SYNOPSIS
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--------
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'perf help' [-a|--all] [COMMAND]
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DESCRIPTION
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-----------
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With no options and no COMMAND given, the synopsis of the 'perf'
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command and a list of the most commonly used perf commands are printed
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on the standard output.
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If the option '--all' or '-a' is given, then all available commands are
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printed on the standard output.
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If a perf command is named, a manual page for that command is brought
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up. The 'man' program is used by default for this purpose, but this
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can be overridden by other options or configuration variables.
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Note that `perf --help ...` is identical to `perf help ...` because the
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former is internally converted into the latter.
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OPTIONS
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-------
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-a::
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--all::
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Prints all the available commands on the standard output. This
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option supersedes any other option.
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PERF
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----
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Part of the linkperf:perf[1] suite
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