tools/perf/arch/s390/util/kvm-stat.c

   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 "../../util/evsel.h"
  15 #include <asm/sie.h>
  16
  17 define_exit_reasons_table(sie_exit_reasons, sie_intercept_code);
  18 define_exit_reasons_table(sie_icpt_insn_codes, icpt_insn_codes);
  19 define_exit_reasons_table(sie_sigp_order_codes, sigp_order_codes);
  20 define_exit_reasons_table(sie_diagnose_codes, diagnose_codes);
  21 define_exit_reasons_table(sie_icpt_prog_codes, icpt_prog_codes);
  22
  23 const char *vcpu_id_str = "id";
  24 const int decode_str_len = 40;
  25 const char *kvm_exit_reason = "icptcode";
  26 const char *kvm_entry_trace = "kvm:kvm_s390_sie_enter";
  27 const char *kvm_exit_trace = "kvm:kvm_s390_sie_exit";
  28
  29 static void event_icpt_insn_get_key(struct perf_evsel *evsel,
  30                                     struct perf_sample *sample,
  31                                     struct event_key *key)
  32 {
  33         unsigned long insn;
  34
  35         insn = perf_evsel__intval(evsel, sample, "instruction");
  36         key->key = icpt_insn_decoder(insn);
  37         key->exit_reasons = sie_icpt_insn_codes;
  38 }
  39
  40 static void event_sigp_get_key(struct perf_evsel *evsel,
  41                                struct perf_sample *sample,
  42                                struct event_key *key)
  43 {
  44         key->key = perf_evsel__intval(evsel, sample, "order_code");
  45         key->exit_reasons = sie_sigp_order_codes;
  46 }
  47
  48 static void event_diag_get_key(struct perf_evsel *evsel,
  49                                struct perf_sample *sample,
  50                                struct event_key *key)
  51 {
  52         key->key = perf_evsel__intval(evsel, sample, "code");
  53         key->exit_reasons = sie_diagnose_codes;
  54 }
  55
  56 static void event_icpt_prog_get_key(struct perf_evsel *evsel,
  57                                     struct perf_sample *sample,
  58                                     struct event_key *key)
  59 {
  60         key->key = perf_evsel__intval(evsel, sample, "code");
  61         key->exit_reasons = sie_icpt_prog_codes;
  62 }
  63
  64 static struct child_event_ops child_events[] = {
  65         { .name = "kvm:kvm_s390_intercept_instruction",
  66           .get_key = event_icpt_insn_get_key },
  67         { .name = "kvm:kvm_s390_handle_sigp",
  68           .get_key = event_sigp_get_key },
  69         { .name = "kvm:kvm_s390_handle_diag",
  70           .get_key = event_diag_get_key },
  71         { .name = "kvm:kvm_s390_intercept_prog",
  72           .get_key = event_icpt_prog_get_key },
  73         { NULL, NULL },
  74 };
  75
  76 static struct kvm_events_ops exit_events = {
  77         .is_begin_event = exit_event_begin,
  78         .is_end_event = exit_event_end,
  79         .child_ops = child_events,
  80         .decode_key = exit_event_decode_key,
  81         .name = "VM-EXIT"
  82 };
  83
  84 const char *kvm_events_tp[] = {
  85         "kvm:kvm_s390_sie_enter",
  86         "kvm:kvm_s390_sie_exit",
  87         "kvm:kvm_s390_intercept_instruction",
  88         "kvm:kvm_s390_handle_sigp",
  89         "kvm:kvm_s390_handle_diag",
  90         "kvm:kvm_s390_intercept_prog",
  91         NULL,
  92 };
  93
  94 struct kvm_reg_events_ops kvm_reg_events_ops[] = {
  95         { .name = "vmexit", .ops = &exit_events },
  96         { NULL, NULL },
  97 };
  98
  99 const char * const kvm_skip_events[] = {
 100         "Wait state",
 101         NULL,
 102 };
 103
 104 int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
 105 {
 106         if (strstr(cpuid, "IBM")) {
 107                 kvm->exit_reasons = sie_exit_reasons;
 108                 kvm->exit_reasons_isa = "SIE";
 109         } else
 110                 return -ENOTSUP;
 111
 112         return 0;
 113 }