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
107 lines
2.6 KiB
Raku
107 lines
2.6 KiB
Raku
# perf script event handlers, generated by perf script -g perl
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# (c) 2009, Tom Zanussi <tzanussi@gmail.com>
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# Licensed under the terms of the GNU GPL License version 2
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# This script tests basic functionality such as flag and symbol
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# strings, common_xxx() calls back into perf, begin, end, unhandled
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# events, etc. Basically, if this script runs successfully and
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# displays expected results, perl scripting support should be ok.
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use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
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use lib "./Perf-Trace-Util/lib";
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use Perf::Trace::Core;
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use Perf::Trace::Context;
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use Perf::Trace::Util;
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sub trace_begin
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{
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print "trace_begin\n";
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}
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sub trace_end
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{
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print "trace_end\n";
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print_unhandled();
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}
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sub irq::softirq_entry
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm,
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$vec) = @_;
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print_header($event_name, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm);
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print_uncommon($context);
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printf("vec=%s\n",
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symbol_str("irq::softirq_entry", "vec", $vec));
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}
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sub kmem::kmalloc
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm,
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$call_site, $ptr, $bytes_req, $bytes_alloc,
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$gfp_flags) = @_;
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print_header($event_name, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm);
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print_uncommon($context);
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printf("call_site=%p, ptr=%p, bytes_req=%u, bytes_alloc=%u, ".
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"gfp_flags=%s\n",
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$call_site, $ptr, $bytes_req, $bytes_alloc,
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flag_str("kmem::kmalloc", "gfp_flags", $gfp_flags));
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}
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# print trace fields not included in handler args
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sub print_uncommon
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{
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my ($context) = @_;
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printf("common_preempt_count=%d, common_flags=%s, common_lock_depth=%d, ",
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common_pc($context), trace_flag_str(common_flags($context)),
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common_lock_depth($context));
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}
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my %unhandled;
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sub print_unhandled
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{
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if ((scalar keys %unhandled) == 0) {
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return;
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}
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print "\nunhandled events:\n\n";
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printf("%-40s %10s\n", "event", "count");
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printf("%-40s %10s\n", "----------------------------------------",
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"-----------");
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foreach my $event_name (keys %unhandled) {
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printf("%-40s %10d\n", $event_name, $unhandled{$event_name});
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}
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}
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sub trace_unhandled
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{
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my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
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$common_pid, $common_comm) = @_;
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$unhandled{$event_name}++;
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}
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sub print_header
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{
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my ($event_name, $cpu, $secs, $nsecs, $pid, $comm) = @_;
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printf("%-20s %5u %05u.%09u %8u %-20s ",
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$event_name, $cpu, $secs, $nsecs, $pid, $comm);
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}
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