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linux-7.2.3/tools/perf/arch/s390/util/Build

@@ -0,0 +1,6 @@
+perf-util-y += header.o
+
+perf-util-y += machine.o
+perf-util-y += pmu.o
+
+perf-util-y += auxtrace.o

linux-7.2.3/tools/perf/arch/s390/util/auxtrace.c

@@ -0,0 +1,125 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/log2.h>
+#include <linux/zalloc.h>
+
+#include "../../util/evlist.h"
+#include "../../util/auxtrace.h"
+#include "../../util/evsel.h"
+#include "../../util/record.h"
+
+#define PERF_EVENT_CPUM_SF		0xB0000 /* Event: Basic-sampling */
+#define PERF_EVENT_CPUM_SF_DIAG		0xBD000 /* Event: Combined-sampling */
+#define DEFAULT_AUX_PAGES		128
+#define DEFAULT_FREQ			4000
+
+static void cpumsf_free(struct auxtrace_record *itr)
+{
+	free(itr);
+}
+
+static size_t cpumsf_info_priv_size(struct auxtrace_record *itr __maybe_unused,
+				    struct evlist *evlist __maybe_unused)
+{
+	return 0;
+}
+
+static int
+cpumsf_info_fill(struct auxtrace_record *itr __maybe_unused,
+		 struct perf_session *session __maybe_unused,
+		 struct perf_record_auxtrace_info *auxtrace_info __maybe_unused,
+		 size_t priv_size __maybe_unused)
+{
+	auxtrace_info->type = PERF_AUXTRACE_S390_CPUMSF;
+	return 0;
+}
+
+static unsigned long
+cpumsf_reference(struct auxtrace_record *itr __maybe_unused)
+{
+	return 0;
+}
+
+static int
+cpumsf_recording_options(struct auxtrace_record *ar __maybe_unused,
+			 struct evlist *evlist __maybe_unused,
+			 struct record_opts *opts)
+{
+	unsigned int factor = 1;
+	unsigned int pages;
+
+	opts->full_auxtrace = true;
+
+	/*
+	 * The AUX buffer size should be set properly to avoid
+	 * overflow of samples if it is not set explicitly.
+	 * DEFAULT_AUX_PAGES is an proper size when sampling frequency
+	 * is DEFAULT_FREQ. It is expected to hold about 1/2 second
+	 * of sampling data. The size used for AUX buffer will scale
+	 * according to the specified frequency and DEFAULT_FREQ.
+	 */
+	if (!opts->auxtrace_mmap_pages) {
+		if (opts->user_freq != UINT_MAX)
+			factor = (opts->user_freq + DEFAULT_FREQ
+				  - 1) / DEFAULT_FREQ;
+		pages = DEFAULT_AUX_PAGES * factor;
+		opts->auxtrace_mmap_pages = roundup_pow_of_two(pages);
+	}
+
+	return 0;
+}
+
+static int
+cpumsf_parse_snapshot_options(struct auxtrace_record *itr __maybe_unused,
+			      struct record_opts *opts __maybe_unused,
+			      const char *str __maybe_unused)
+{
+	return 0;
+}
+
+/*
+ * auxtrace_record__init is called when perf record
+ * check if the event really need auxtrace
+ */
+struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,
+					      int *err)
+{
+	struct auxtrace_record *aux;
+	struct evsel *pos;
+	int diagnose = 0;
+
+	*err = 0;
+	if (evlist->core.nr_entries == 0)
+		return NULL;
+
+	evlist__for_each_entry(evlist, pos) {
+		if (pos->core.attr.config == PERF_EVENT_CPUM_SF_DIAG) {
+			diagnose = 1;
+			pos->needs_auxtrace_mmap = true;
+			break;
+		}
+	}
+
+	if (!diagnose)
+		return NULL;
+
+	/* sampling in diagnose mode. alloc aux buffer */
+	aux = zalloc(sizeof(*aux));
+	if (aux == NULL) {
+		*err = -ENOMEM;
+		return NULL;
+	}
+
+	aux->parse_snapshot_options = cpumsf_parse_snapshot_options;
+	aux->recording_options = cpumsf_recording_options;
+	aux->info_priv_size = cpumsf_info_priv_size;
+	aux->info_fill = cpumsf_info_fill;
+	aux->free = cpumsf_free;
+	aux->reference = cpumsf_reference;
+
+	return aux;
+}

linux-7.2.3/tools/perf/arch/s390/util/header.c

@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Implementation of get_cpuid().
+ *
+ * Copyright IBM Corp. 2014, 2018
+ * Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
+ *	      Thomas Richter <tmricht@linux.vnet.ibm.com>
+ */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+#include <linux/zalloc.h>
+
+#include "../../util/header.h"
+
+#define SYSINFO_MANU	"Manufacturer:"
+#define SYSINFO_TYPE	"Type:"
+#define SYSINFO_MODEL	"Model:"
+#define SRVLVL_CPUMF	"CPU-MF:"
+#define SRVLVL_VERSION	"version="
+#define SRVLVL_AUTHORIZATION	"authorization="
+#define SYSINFO		"/proc/sysinfo"
+#define SRVLVL		"/proc/service_levels"
+
+int get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu __maybe_unused)
+{
+	char *cp, *line = NULL, *line2;
+	char type[8], model[33], version[8], manufacturer[32], authorization[8];
+	int tpsize = 0, mdsize = 0, vssize = 0, mfsize = 0, atsize = 0;
+	int read;
+	unsigned long line_sz;
+	size_t nbytes;
+	FILE *sysinfo;
+
+	/*
+	 * Scan /proc/sysinfo line by line and read out values for
+	 * Manufacturer:, Type: and Model:, for example:
+	 * Manufacturer:    IBM
+	 * Type:            2964
+	 * Model:           702              N96
+	 * The first word is the Model Capacity and the second word is
+	 * Model (can be omitted). Both words have a maximum size of 16
+	 * bytes.
+	 */
+	memset(manufacturer, 0, sizeof(manufacturer));
+	memset(type, 0, sizeof(type));
+	memset(model, 0, sizeof(model));
+	memset(version, 0, sizeof(version));
+	memset(authorization, 0, sizeof(authorization));
+
+	sysinfo = fopen(SYSINFO, "r");
+	if (sysinfo == NULL)
+		return errno;
+
+	while ((read = getline(&line, &line_sz, sysinfo)) != -1) {
+		if (!strncmp(line, SYSINFO_MANU, strlen(SYSINFO_MANU))) {
+			line2 = line + strlen(SYSINFO_MANU);
+
+			while ((cp = strtok_r(line2, "\n ", &line2))) {
+				mfsize += scnprintf(manufacturer + mfsize,
+						    sizeof(manufacturer) - mfsize, "%s", cp);
+			}
+		}
+
+		if (!strncmp(line, SYSINFO_TYPE, strlen(SYSINFO_TYPE))) {
+			line2 = line + strlen(SYSINFO_TYPE);
+
+			while ((cp = strtok_r(line2, "\n ", &line2))) {
+				tpsize += scnprintf(type + tpsize,
+						    sizeof(type) - tpsize, "%s", cp);
+			}
+		}
+
+		if (!strncmp(line, SYSINFO_MODEL, strlen(SYSINFO_MODEL))) {
+			line2 = line + strlen(SYSINFO_MODEL);
+
+			while ((cp = strtok_r(line2, "\n ", &line2))) {
+				mdsize += scnprintf(model + mdsize, sizeof(model) - mdsize,
+						    "%s%s", model[0] ? "," : "", cp);
+			}
+			break;
+		}
+	}
+	fclose(sysinfo);
+
+	/* Missing manufacturer, type or model information should not happen */
+	if (!manufacturer[0] || !type[0] || !model[0])
+		return EINVAL;
+
+	/*
+	 * Scan /proc/service_levels and return the CPU-MF counter facility
+	 * version number and authorization level.
+	 * Optional, does not exist on z/VM guests.
+	 */
+	sysinfo = fopen(SRVLVL, "r");
+	if (sysinfo == NULL)
+		goto skip_sysinfo;
+	while ((read = getline(&line, &line_sz, sysinfo)) != -1) {
+		if (strncmp(line, SRVLVL_CPUMF, strlen(SRVLVL_CPUMF)))
+			continue;
+
+		line2 = line + strlen(SRVLVL_CPUMF);
+		while ((cp = strtok_r(line2, "\n ", &line2))) {
+			if (!strncmp(cp, SRVLVL_VERSION,
+				     strlen(SRVLVL_VERSION))) {
+				char *sep = strchr(cp, '=');
+
+				vssize += scnprintf(version + vssize,
+						    sizeof(version) - vssize, "%s", sep + 1);
+			}
+			if (!strncmp(cp, SRVLVL_AUTHORIZATION,
+				     strlen(SRVLVL_AUTHORIZATION))) {
+				char *sep = strchr(cp, '=');
+
+				atsize += scnprintf(authorization + atsize,
+						    sizeof(authorization) - atsize, "%s", sep + 1);
+			}
+		}
+	}
+	fclose(sysinfo);
+
+skip_sysinfo:
+	free(line);
+
+	if (version[0] && authorization[0] )
+		nbytes = snprintf(buffer, sz, "%s,%s,%s,%s,%s",
+				  manufacturer, type, model, version,
+				  authorization);
+	else
+		nbytes = snprintf(buffer, sz, "%s,%s,%s", manufacturer, type,
+				  model);
+	return (nbytes >= sz) ? ENOBUFS : 0;
+}
+
+char *get_cpuid_str(struct perf_cpu cpu)
+{
+	char *buf = malloc(128);
+
+	if (buf && get_cpuid(buf, 128, cpu))
+		zfree(&buf);
+	return buf;
+}

linux-7.2.3/tools/perf/arch/s390/util/machine.c

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <inttypes.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <internal/lib.h> // page_size
+#include "machine.h"
+#include "api/fs/fs.h"
+#include "debug.h"
+#include "symbol.h"
+
+int arch__fix_module_text_start(u64 *start, u64 *size, const char *name)
+{
+	u64 m_start = *start;
+	char path[PATH_MAX];
+
+	snprintf(path, PATH_MAX, "module/%.*s/sections/.text",
+				(int)strlen(name) - 2, name + 1);
+	if (sysfs__read_ull(path, (unsigned long long *)start) < 0) {
+		pr_debug2("Using module %s start:%#lx\n", path, m_start);
+		*start = m_start;
+	} else {
+		/* Successful read of the modules segment text start address.
+		 * Calculate difference between module start address
+		 * in memory and module text segment start address.
+		 * For example module load address is 0x3ff8011b000
+		 * (from /proc/modules) and module text segment start
+		 * address is 0x3ff8011b870 (from file above).
+		 *
+		 * Adjust the module size and subtract the GOT table
+		 * size located at the beginning of the module.
+		 */
+		*size -= (*start - m_start);
+	}
+
+	return 0;
+}

linux-7.2.3/tools/perf/arch/s390/util/pmu.c

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright IBM Corp. 2023
+ * Author(s): Thomas Richter <tmricht@linux.ibm.com>
+ */
+
+#include <string.h>
+
+#include "../../../util/pmu.h"
+
+#define	S390_PMUPAI_CRYPTO	"pai_crypto"
+#define	S390_PMUPAI_EXT		"pai_ext"
+#define	S390_PMUCPUM_CF		"cpum_cf"
+
+void perf_pmu__arch_init(struct perf_pmu *pmu)
+{
+	if (!strcmp(pmu->name, S390_PMUPAI_CRYPTO) ||
+	    !strcmp(pmu->name, S390_PMUPAI_EXT) ||
+	    !strcmp(pmu->name, S390_PMUCPUM_CF))
+		pmu->selectable = true;
+}