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
95 lines
1.5 KiB
Perl
95 lines
1.5 KiB
Perl
package Perf::Trace::Util;
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use 5.010000;
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use strict;
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use warnings;
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require Exporter;
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our @ISA = qw(Exporter);
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our %EXPORT_TAGS = ( 'all' => [ qw(
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) ] );
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our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
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our @EXPORT = qw(
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avg nsecs nsecs_secs nsecs_nsecs nsecs_usecs print_nsecs
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clear_term
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);
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our $VERSION = '0.01';
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sub avg
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{
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my ($total, $n) = @_;
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return $total / $n;
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}
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my $NSECS_PER_SEC = 1000000000;
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sub nsecs
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{
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my ($secs, $nsecs) = @_;
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return $secs * $NSECS_PER_SEC + $nsecs;
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}
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sub nsecs_secs {
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my ($nsecs) = @_;
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return $nsecs / $NSECS_PER_SEC;
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}
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sub nsecs_nsecs {
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my ($nsecs) = @_;
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return $nsecs % $NSECS_PER_SEC;
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}
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sub nsecs_str {
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my ($nsecs) = @_;
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my $str = sprintf("%5u.%09u", nsecs_secs($nsecs), nsecs_nsecs($nsecs));
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return $str;
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}
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sub clear_term
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{
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print "\x1b[H\x1b[2J";
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}
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1;
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__END__
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=head1 NAME
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Perf::Trace::Util - Perl extension for perf script
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=head1 SYNOPSIS
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use Perf::Trace::Util;
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=head1 SEE ALSO
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Perf (script) documentation
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=head1 AUTHOR
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Tom Zanussi, E<lt>tzanussi@gmail.com<gt>
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=head1 COPYRIGHT AND LICENSE
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Copyright (C) 2009 by Tom Zanussi
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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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=cut
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