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

Source file repositories/reference/linux-study-clean/tools/perf/util/kvm-stat-arch/kvm-stat-s390.c

File Facts

System
Linux kernel
Corpus path
tools/perf/util/kvm-stat-arch/kvm-stat-s390.c
Extension
.c
Size
3123 bytes
Lines
121
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// 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 "../kvm-stat.h"
#include "../evsel.h"
#include "../../../arch/s390/include/uapi/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);

static void event_icpt_insn_get_key(struct evsel *evsel,
				    struct perf_sample *sample,
				    struct event_key *key)
{
	u64 insn;

	insn = 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 = 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 = 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 = evsel__intval(evsel, sample, "code");
	key->exit_reasons = sie_icpt_prog_codes;
}

static const 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 const 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"
};

static const char * const __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,
};

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

Annotation

Implementation Notes