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authorThomas Richter <tmricht@linux.vnet.ibm.com>2018-02-13 16:14:16 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-02-16 15:15:23 -0300
commiteca0fa28cd0df7369701dbee0e30ddce19c039b8 (patch)
treeec81bfc68943d0160a585256700092e70770ccb2 /tools/perf/arch
parent4281da235e3de91bb8deae44bc6506336ceaa88a (diff)
downloadlinux-eca0fa28cd0df7369701dbee0e30ddce19c039b8.tar.bz2
perf record: Provide detailed information on s390 CPU
When perf record ... is setup to record data, the s390 cpu information was a fixed string "IBM/S390". Replace this string with one containing more information about the machine. The information included in the cpuid is a comma separated list: manufacturer,type,model-capacity,model[,version,authorization] with - manufacturer: up to 16 byte name of the manufacturer (IBM). - type: a four digit number refering to the machine generation. - model-capacitiy: up to 16 characters describing number of cpus etc. - model: up to 16 characters describing model. - version: the CPU-MF counter facility version number, available on LPARs only, omitted on z/VM guests. - authorization: the CPU-MF counter facility authorization level, available on LPARs only, omitted on z/VM guests. Before: [root@s8360047 perf]# ./perf record -- sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data (4 samples) ] [root@s8360047 perf]# ./perf report --header | fgrep cpuid # cpuid : IBM/S390 [root@s8360047 perf]# After: [root@s35lp76 perf]# ./perf report --header|fgrep cpuid # cpuid : IBM,3906,704,M03,3.5,002f [root@s35lp76 perf]# Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180213151419.80737-1-tmricht@linux.vnet.ibm.com [ Use scnprintf instead of strncat to fix build errors on gcc GNU C99 5.4.0 20160609 -march=zEC12 -m64 -mzarch -ggdb3 -O6 -std=gnu99 -fPIC -fno-omit-frame-pointer -funwind-tables -fstack-protector-all ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch')
-rw-r--r--tools/perf/arch/s390/util/header.c130
1 files changed, 125 insertions, 5 deletions
diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c
index 9fa6c3e5782c..a78064c25ced 100644
--- a/tools/perf/arch/s390/util/header.c
+++ b/tools/perf/arch/s390/util/header.c
@@ -1,8 +1,9 @@
/*
* Implementation of get_cpuid().
*
- * Copyright 2014 IBM Corp.
+ * Copyright IBM Corp. 2014, 2018
* Author(s): Alexander Yarygin <yarygin@linux.vnet.ibm.com>
+ * Thomas Richter <tmricht@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)
@@ -13,16 +14,135 @@
#include <unistd.h>
#include <stdio.h>
#include <string.h>
+#include <ctype.h>
#include "../../util/header.h"
+#include "../../util/util.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)
{
- const char *cpuid = "IBM/S390";
+ 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 -1;
+
+ 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(type) - mdsize,
+ "%s%s", model[0] ? "," : "", cp);
+ }
+ break;
+ }
+ }
+ fclose(sysinfo);
- if (strlen(cpuid) + 1 > sz)
+ /* Missing manufacturer, type or model information should not happen */
+ if (!manufacturer[0] || !type[0] || !model[0])
return -1;
- strcpy(buffer, cpuid);
- return 0;
+ /*
+ * 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) ? -1 : 0;
+}
+
+char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
+{
+ char *buf = malloc(128);
+
+ if (buf && get_cpuid(buf, 128) < 0)
+ zfree(&buf);
+ return buf;
}