Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

Open Menu /tools/perf/arch/s390/util/kvm-stat.c 
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
/*
 * Arch specific functions for perf kvm stat.
 *
 * Copyright 2014 IBM Corp.
 * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (version 2 only)
 * as published by the Free Software Foundation.
 */

#include "../../util/kvm-stat.h"
#include <asm/sie.h>

define_exit_reasons_table(sie_exit_reasons, sie_intercept_code);
define_exit_reasons_table(sie_icpt_insn_codes, icpt_insn_codes);
define_exit_reasons_table(sie_sigp_order_codes, sigp_order_codes);
define_exit_reasons_table(sie_diagnose_codes, diagnose_codes);
define_exit_reasons_table(sie_icpt_prog_codes, icpt_prog_codes);

const char *vcpu_id_str = "id";
const int decode_str_len = 40;
const char *kvm_exit_reason = "icptcode";
const char *kvm_entry_trace = "kvm:kvm_s390_sie_enter";
const char *kvm_exit_trace = "kvm:kvm_s390_sie_exit";

static void event_icpt_insn_get_key(struct perf_evsel *evsel,
				    struct perf_sample *sample,
				    struct event_key *key)
{
	unsigned long insn;

	insn = perf_evsel__intval(evsel, sample, "instruction");
	key->key = icpt_insn_decoder(insn);
	key->exit_reasons = sie_icpt_insn_codes;
}

static void event_sigp_get_key(struct perf_evsel *evsel,
			       struct perf_sample *sample,
			       struct event_key *key)
{
	key->key = perf_evsel__intval(evsel, sample, "order_code");
	key->exit_reasons = sie_sigp_order_codes;
}

static void event_diag_get_key(struct perf_evsel *evsel,
			       struct perf_sample *sample,
			       struct event_key *key)
{
	key->key = perf_evsel__intval(evsel, sample, "code");
	key->exit_reasons = sie_diagnose_codes;
}

static void event_icpt_prog_get_key(struct perf_evsel *evsel,
				    struct perf_sample *sample,
				    struct event_key *key)
{
	key->key = perf_evsel__intval(evsel, sample, "code");
	key->exit_reasons = sie_icpt_prog_codes;
}

static struct child_event_ops child_events[] = {
	{ .name = "kvm:kvm_s390_intercept_instruction",
	  .get_key = event_icpt_insn_get_key },
	{ .name = "kvm:kvm_s390_handle_sigp",
	  .get_key = event_sigp_get_key },
	{ .name = "kvm:kvm_s390_handle_diag",
	  .get_key = event_diag_get_key },
	{ .name = "kvm:kvm_s390_intercept_prog",
	  .get_key = event_icpt_prog_get_key },
	{ NULL, NULL },
};

static struct kvm_events_ops exit_events = {
	.is_begin_event = exit_event_begin,
	.is_end_event = exit_event_end,
	.child_ops = child_events,
	.decode_key = exit_event_decode_key,
	.name = "VM-EXIT"
};

const char *kvm_events_tp[] = {
	"kvm:kvm_s390_sie_enter",
	"kvm:kvm_s390_sie_exit",
	"kvm:kvm_s390_intercept_instruction",
	"kvm:kvm_s390_handle_sigp",
	"kvm:kvm_s390_handle_diag",
	"kvm:kvm_s390_intercept_prog",
	NULL,
};

struct kvm_reg_events_ops kvm_reg_events_ops[] = {
	{ .name = "vmexit", .ops = &exit_events },
	{ NULL, NULL },
};

const char * const kvm_skip_events[] = {
	"Wait state",
	NULL,
};

int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid)
{
	if (strstr(cpuid, "IBM/S390")) {
		kvm->exit_reasons = sie_exit_reasons;
		kvm->exit_reasons_isa = "SIE";
	} else
		return -ENOTSUP;

	return 0;
}