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
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*
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* Arch specific functions for perf kvm stat.
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*
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* Copyright 2014 IBM Corp.
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* Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (version 2 only)
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* as published by the Free Software Foundation.
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*/
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#include <errno.h>
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#include "../../util/kvm-stat.h"
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#include <asm/sie.h>
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define_exit_reasons_table(sie_exit_reasons, sie_intercept_code);
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define_exit_reasons_table(sie_icpt_insn_codes, icpt_insn_codes);
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define_exit_reasons_table(sie_sigp_order_codes, sigp_order_codes);
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define_exit_reasons_table(sie_diagnose_codes, diagnose_codes);
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define_exit_reasons_table(sie_icpt_prog_codes, icpt_prog_codes);
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const char *vcpu_id_str = "id";
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const int decode_str_len = 40;
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const char *kvm_exit_reason = "icptcode";
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const char *kvm_entry_trace = "kvm:kvm_s390_sie_enter";
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const char *kvm_exit_trace = "kvm:kvm_s390_sie_exit";
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static void event_icpt_insn_get_key(struct perf_evsel *evsel,
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struct perf_sample *sample,
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struct event_key *key)
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{
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unsigned long insn;
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insn = perf_evsel__intval(evsel, sample, "instruction");
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key->key = icpt_insn_decoder(insn);
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key->exit_reasons = sie_icpt_insn_codes;
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}
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static void event_sigp_get_key(struct perf_evsel *evsel,
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struct perf_sample *sample,
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struct event_key *key)
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{
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key->key = perf_evsel__intval(evsel, sample, "order_code");
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key->exit_reasons = sie_sigp_order_codes;
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}
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static void event_diag_get_key(struct perf_evsel *evsel,
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struct perf_sample *sample,
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struct event_key *key)
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{
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key->key = perf_evsel__intval(evsel, sample, "code");
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key->exit_reasons = sie_diagnose_codes;
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}
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static void event_icpt_prog_get_key(struct perf_evsel *evsel,
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struct perf_sample *sample,
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struct event_key *key)
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{
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key->key = perf_evsel__intval(evsel, sample, "code");
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key->exit_reasons = sie_icpt_prog_codes;
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}
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static struct child_event_ops child_events[] = {
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{ .name = "kvm:kvm_s390_intercept_instruction",
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.get_key = event_icpt_insn_get_key },
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{ .name = "kvm:kvm_s390_handle_sigp",
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.get_key = event_sigp_get_key },
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{ .name = "kvm:kvm_s390_handle_diag",
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.get_key = event_diag_get_key },
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{ .name = "kvm:kvm_s390_intercept_prog",
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.get_key = event_icpt_prog_get_key },
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{ NULL, NULL },
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};
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static struct kvm_events_ops exit_events = {
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.is_begin_event = exit_event_begin,
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.is_end_event = exit_event_end,
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.child_ops = child_events,
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.decode_key = exit_event_decode_key,
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.name = "VM-EXIT"
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};
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const char *kvm_events_tp[] = {
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"kvm:kvm_s390_sie_enter",
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"kvm:kvm_s390_sie_exit",
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"kvm:kvm_s390_intercept_instruction",
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"kvm:kvm_s390_handle_sigp",
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"kvm:kvm_s390_handle_diag",
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"kvm:kvm_s390_intercept_prog",
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NULL,
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};
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struct kvm_reg_events_ops kvm_reg_events_ops[] = {
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{ .name = "vmexit", .ops = &exit_events },
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{ NULL, NULL },
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};
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const char * const kvm_skip_events[] = {
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"Wait state",
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NULL,
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};
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int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
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{
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if (strstr(cpuid, "IBM/S390")) {
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kvm->exit_reasons = sie_exit_reasons;
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kvm->exit_reasons_isa = "SIE";
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} else
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return -ENOTSUP;
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return 0;
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}
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