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
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/*
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* drv_configs.h: Interface to apply PMU specific configuration
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* Copyright (c) 2016-2018, Linaro Ltd.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#include "drv_configs.h"
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#include "evlist.h"
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#include "evsel.h"
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#include "pmu.h"
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#include <errno.h>
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static int
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perf_evsel__apply_drv_configs(struct perf_evsel *evsel,
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struct perf_evsel_config_term **err_term)
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{
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bool found = false;
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int err = 0;
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struct perf_evsel_config_term *term;
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struct perf_pmu *pmu = NULL;
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while ((pmu = perf_pmu__scan(pmu)) != NULL)
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if (pmu->type == evsel->attr.type) {
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found = true;
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break;
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}
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list_for_each_entry(term, &evsel->config_terms, list) {
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if (term->type != PERF_EVSEL__CONFIG_TERM_DRV_CFG)
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continue;
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/*
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* We have a configuration term, report an error if we
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* can't find the PMU or if the PMU driver doesn't support
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* cmd line driver configuration.
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*/
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if (!found || !pmu->set_drv_config) {
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err = -EINVAL;
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*err_term = term;
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break;
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}
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err = pmu->set_drv_config(term);
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if (err) {
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*err_term = term;
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break;
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}
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}
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return err;
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}
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int perf_evlist__apply_drv_configs(struct perf_evlist *evlist,
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struct perf_evsel **err_evsel,
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struct perf_evsel_config_term **err_term)
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{
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struct perf_evsel *evsel;
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int err = 0;
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evlist__for_each_entry(evlist, evsel) {
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err = perf_evsel__apply_drv_configs(evsel, err_term);
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if (err) {
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*err_evsel = evsel;
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break;
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}
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}
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return err;
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}
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