1 /*
2 * Arch specific functions for perf kvm stat.
3 *
4 * Copyright 2014 IBM Corp.
5 * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License (version 2 only)
9 * as published by the Free Software Foundation.
10 */
11
12 #include <errno.h>
13 #include "../../util/kvm-stat.h"
14 #include <asm/sie.h>
15
16 define_exit_reasons_table(sie_exit_reasons, sie_intercept_code);
17 define_exit_reasons_table(sie_icpt_insn_codes, icpt_insn_codes);
18 define_exit_reasons_table(sie_sigp_order_codes, sigp_order_codes);
19 define_exit_reasons_table(sie_diagnose_codes, diagnose_codes);
20 define_exit_reasons_table(sie_icpt_prog_codes, icpt_prog_codes);
21
22 const char *vcpu_id_str = "id";
23 const int decode_str_len = 40;
24 const char *kvm_exit_reason = "icptcode";
25 const char *kvm_entry_trace = "kvm:kvm_s390_sie_enter";
26 const char *kvm_exit_trace = "kvm:kvm_s390_sie_exit";
27
event_icpt_insn_get_key(struct perf_evsel * evsel,struct perf_sample * sample,struct event_key * key)28 static void event_icpt_insn_get_key(struct perf_evsel *evsel,
29 struct perf_sample *sample,
30 struct event_key *key)
31 {
32 unsigned long insn;
33
34 insn = perf_evsel__intval(evsel, sample, "instruction");
35 key->key = icpt_insn_decoder(insn);
36 key->exit_reasons = sie_icpt_insn_codes;
37 }
38
event_sigp_get_key(struct perf_evsel * evsel,struct perf_sample * sample,struct event_key * key)39 static void event_sigp_get_key(struct perf_evsel *evsel,
40 struct perf_sample *sample,
41 struct event_key *key)
42 {
43 key->key = perf_evsel__intval(evsel, sample, "order_code");
44 key->exit_reasons = sie_sigp_order_codes;
45 }
46
event_diag_get_key(struct perf_evsel * evsel,struct perf_sample * sample,struct event_key * key)47 static void event_diag_get_key(struct perf_evsel *evsel,
48 struct perf_sample *sample,
49 struct event_key *key)
50 {
51 key->key = perf_evsel__intval(evsel, sample, "code");
52 key->exit_reasons = sie_diagnose_codes;
53 }
54
event_icpt_prog_get_key(struct perf_evsel * evsel,struct perf_sample * sample,struct event_key * key)55 static void event_icpt_prog_get_key(struct perf_evsel *evsel,
56 struct perf_sample *sample,
57 struct event_key *key)
58 {
59 key->key = perf_evsel__intval(evsel, sample, "code");
60 key->exit_reasons = sie_icpt_prog_codes;
61 }
62
63 static struct child_event_ops child_events[] = {
64 { .name = "kvm:kvm_s390_intercept_instruction",
65 .get_key = event_icpt_insn_get_key },
66 { .name = "kvm:kvm_s390_handle_sigp",
67 .get_key = event_sigp_get_key },
68 { .name = "kvm:kvm_s390_handle_diag",
69 .get_key = event_diag_get_key },
70 { .name = "kvm:kvm_s390_intercept_prog",
71 .get_key = event_icpt_prog_get_key },
72 { NULL, NULL },
73 };
74
75 static struct kvm_events_ops exit_events = {
76 .is_begin_event = exit_event_begin,
77 .is_end_event = exit_event_end,
78 .child_ops = child_events,
79 .decode_key = exit_event_decode_key,
80 .name = "VM-EXIT"
81 };
82
83 const char *kvm_events_tp[] = {
84 "kvm:kvm_s390_sie_enter",
85 "kvm:kvm_s390_sie_exit",
86 "kvm:kvm_s390_intercept_instruction",
87 "kvm:kvm_s390_handle_sigp",
88 "kvm:kvm_s390_handle_diag",
89 "kvm:kvm_s390_intercept_prog",
90 NULL,
91 };
92
93 struct kvm_reg_events_ops kvm_reg_events_ops[] = {
94 { .name = "vmexit", .ops = &exit_events },
95 { NULL, NULL },
96 };
97
98 const char * const kvm_skip_events[] = {
99 "Wait state",
100 NULL,
101 };
102
cpu_isa_init(struct perf_kvm_stat * kvm,const char * cpuid)103 int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
104 {
105 if (strstr(cpuid, "IBM")) {
106 kvm->exit_reasons = sie_exit_reasons;
107 kvm->exit_reasons_isa = "SIE";
108 } else
109 return -ENOTSUP;
110
111 return 0;
112 }
113