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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/perf/arch/s390/util/header.c | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/arch/s390/util/header.c')
-rw-r--r-- | tools/perf/arch/s390/util/header.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c new file mode 100644 index 000000000..7933f6871 --- /dev/null +++ b/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) +{ + 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_pmu *pmu __maybe_unused) +{ + char *buf = malloc(128); + + if (buf && get_cpuid(buf, 128)) + zfree(&buf); + return buf; +} |