1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Arch specific functions for perf kvm stat.
4 *
5 * Copyright 2014 IBM Corp.
6 * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
7 */
8
9#include <errno.h>
10#include <string.h>
11#include "../../util/kvm-stat.h"
12#include "../../util/evsel.h"
13#include <asm/sie.h>
14
15define_exit_reasons_table(sie_exit_reasons, sie_intercept_code);
16define_exit_reasons_table(sie_icpt_insn_codes, icpt_insn_codes);
17define_exit_reasons_table(sie_sigp_order_codes, sigp_order_codes);
18define_exit_reasons_table(sie_diagnose_codes, diagnose_codes);
19define_exit_reasons_table(sie_icpt_prog_codes, icpt_prog_codes);
20
21const char *vcpu_id_str = "id";
22const char *kvm_exit_reason = "icptcode";
23const char *kvm_entry_trace = "kvm:kvm_s390_sie_enter";
24const char *kvm_exit_trace = "kvm:kvm_s390_sie_exit";
25
26static void event_icpt_insn_get_key(struct evsel *evsel,
27 struct perf_sample *sample,
28 struct event_key *key)
29{
30 unsigned long insn;
31
32 insn = evsel__intval(evsel, sample, "instruction");
33 key->key = icpt_insn_decoder(insn);
34 key->exit_reasons = sie_icpt_insn_codes;
35}
36
37static void event_sigp_get_key(struct evsel *evsel,
38 struct perf_sample *sample,
39 struct event_key *key)
40{
41 key->key = evsel__intval(evsel, sample, "order_code");
42 key->exit_reasons = sie_sigp_order_codes;
43}
44
45static void event_diag_get_key(struct evsel *evsel,
46 struct perf_sample *sample,
47 struct event_key *key)
48{
49 key->key = evsel__intval(evsel, sample, "code");
50 key->exit_reasons = sie_diagnose_codes;
51}
52
53static void event_icpt_prog_get_key(struct evsel *evsel,
54 struct perf_sample *sample,
55 struct event_key *key)
56{
57 key->key = evsel__intval(evsel, sample, "code");
58 key->exit_reasons = sie_icpt_prog_codes;
59}
60
61static struct child_event_ops child_events[] = {
62 { .name = "kvm:kvm_s390_intercept_instruction",
63 .get_key = event_icpt_insn_get_key },
64 { .name = "kvm:kvm_s390_handle_sigp",
65 .get_key = event_sigp_get_key },
66 { .name = "kvm:kvm_s390_handle_diag",
67 .get_key = event_diag_get_key },
68 { .name = "kvm:kvm_s390_intercept_prog",
69 .get_key = event_icpt_prog_get_key },
70 { NULL, NULL },
71};
72
73static struct kvm_events_ops exit_events = {
74 .is_begin_event = exit_event_begin,
75 .is_end_event = exit_event_end,
76 .child_ops = child_events,
77 .decode_key = exit_event_decode_key,
78 .name = "VM-EXIT"
79};
80
81const char *kvm_events_tp[] = {
82 "kvm:kvm_s390_sie_enter",
83 "kvm:kvm_s390_sie_exit",
84 "kvm:kvm_s390_intercept_instruction",
85 "kvm:kvm_s390_handle_sigp",
86 "kvm:kvm_s390_handle_diag",
87 "kvm:kvm_s390_intercept_prog",
88 NULL,
89};
90
91struct kvm_reg_events_ops kvm_reg_events_ops[] = {
92 { .name = "vmexit", .ops = &exit_events },
93 { NULL, NULL },
94};
95
96const char * const kvm_skip_events[] = {
97 "Wait state",
98 NULL,
99};
100
101int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
102{
103 if (strstr(cpuid, "IBM")) {
104 kvm->exit_reasons = sie_exit_reasons;
105 kvm->exit_reasons_isa = "SIE";
106 } else
107 return -ENOTSUP;
108
109 return 0;
110}
111

source code of linux/tools/perf/arch/s390/util/kvm-stat.c