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
59 lines
2.1 KiB
Text
59 lines
2.1 KiB
Text
Perf-Trace-Util version 0.01
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============================
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This module contains utility functions for use with perf script.
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Core.pm and Util.pm are pure Perl modules; Core.pm contains routines
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that the core perf support for Perl calls on and should always be
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'used', while Util.pm contains useful but optional utility functions
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that scripts may want to use. Context.pm contains the Perl->C
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interface that allows scripts to access data in the embedding perf
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executable; scripts wishing to do that should 'use Context.pm'.
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The Perl->C perf interface is completely driven by Context.xs. If you
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want to add new Perl functions that end up accessing C data in the
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perf executable, you add desciptions of the new functions here.
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scripting_context is a pointer to the perf data in the perf executable
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that you want to access - it's passed as the second parameter,
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$context, to all handler functions.
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After you do that:
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perl Makefile.PL # to create a Makefile for the next step
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make # to create Context.c
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edit Context.c to add const to the char* file = __FILE__ line in
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XS(boot_Perf__Trace__Context) to silence a warning/error.
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You can delete the Makefile, object files and anything else that was
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generated e.g. blib and shared library, etc, except for of course
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Context.c
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You should then be able to run the normal perf make as usual.
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INSTALLATION
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Building perf with perf script Perl scripting should install this
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module in the right place.
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You should make sure libperl and ExtUtils/Embed.pm are installed first
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e.g. apt-get install libperl-dev or yum install perl-ExtUtils-Embed.
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DEPENDENCIES
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This module requires these other modules and libraries:
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None
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COPYRIGHT AND LICENCE
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Copyright (C) 2009 by Tom Zanussi <tzanussi@gmail.com>
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This library is free software; you can redistribute it and/or modify
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it under the same terms as Perl itself, either Perl version 5.10.0 or,
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at your option, any later version of Perl 5 you may have available.
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Alternatively, this software may be distributed under the terms of the
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GNU General Public License ("GPL") version 2 as published by the Free
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Software Foundation.
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