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// SPDX-License-Identifier: GPL-2.0-only
/*
* Arch specific functions for perf kvm stat.
*
* Copyright 2014 IBM Corp.
* Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
*/
#include <errno.h>
#include <string.h>
#include "../../util/kvm-stat.h"
#include "../../util/evsel.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 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 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 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 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")) {
kvm->exit_reasons = sie_exit_reasons;
kvm->exit_reasons_isa = "SIE";
} else
return -ENOTSUP;
return 0;
}
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