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https://github.com/ibm-s390-linux/s390-tools.git
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c7fe21b019
Add a function to detect the existence of the CPU Measurement Sampling Facility on a system. Add a function which extracts the CPU Measurement Sampling Facility characteristics on a system, such as - minimum sample speed - maximum sample speed - current CPU speed - basic sample size in bytes - diagnostic sample size in bytes Add a function to detect the existence of the CPU Measurement Sampling Facility on a system and return the current sampling buffer management characteristics, such as: - minimum supported sampling buffer size - maximum supported sampling buffer size Add a function to detect the existence of the CPU Measurement Counting Facility on a system. Add a function which extracts the CPU Measurement Counting Facility characteristics on a system, such as - counter first version number - counter second version number - counter set authorization level Add a function the returm the PMU type number of a CPU Measurement Facility device driver. These numbers may vary between boots. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/* Copyright IBM Corp. 2022
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "lib/libcpumf.h"
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int main(void)
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{
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unsigned long min, max, speed, sfb_min, sfb_max;
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int rc, pmu, cfvn, csvn, auth;
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cpu_set_t set;
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pmu = libcpumf_pmutype(S390_CPUMF_CF);
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if (pmu >= 0)
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printf("PMU %stype %d\n", S390_CPUMF_CF, pmu);
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else
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printf("PMU %stype error %d\n", S390_CPUMF_CF, errno);
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pmu = libcpumf_pmutype(S390_CPUMF_SF);
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if (pmu >= 0)
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printf("PMU %stype %d\n", S390_CPUMF_SF, pmu);
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else
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printf("PMU %stype error %d\n", S390_CPUMF_SF, errno);
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pmu = libcpumf_pmutype(S390_CPUMF_CFDIAG);
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if (pmu >= 0)
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printf("PMU %stype %d\n", S390_CPUMF_CFDIAG, pmu);
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else
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printf("PMU %stype error %d\n", S390_CPUMF_CFDIAG, errno);
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rc = libcpumf_cpuset_fn(S390_CPUS_ONLINE, &set);
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if (rc == 0) {
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puts("Online CPUs:");
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for (int i = 0; i < CPU_SETSIZE; ++i)
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if (CPU_ISSET(i, &set))
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printf("%d ", i);
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putchar('\n');
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}
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rc = libcpumf_cpuset("0-7,9,11-12 ,15", &set);
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if (rc == 0) {
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puts("String CPUs:");
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for (int i = 0; i < CPU_SETSIZE; ++i)
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if (CPU_ISSET(i, &set))
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printf("%d ", i);
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putchar('\n');
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} else {
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printf("libcpumf_cpuset input invalid %d\n", errno);
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}
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printf("CPUMCF support %d\n", libcpumf_have_cpumcf());
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rc = libcpumf_cpumcf_info(&cfvn, &csvn, &auth);
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printf("libcpumf_cpumcf_info %d", rc);
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if (rc)
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printf(" cfvn %d csvn %d authorization %#x", cfvn, csvn, auth);
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putchar('\n');
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printf("CPUMSF support %d\n", libcpumf_have_cpumsf());
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rc = libcpumf_cpumsf_info(&min, &max, &speed, &cfvn, &csvn);
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printf("libcpumf_cpumsf_info %d", rc);
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if (rc)
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printf(" min %ld max %ld speed %#lx basic %d diag %d", min,
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max, speed, cfvn, csvn);
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putchar('\n');
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printf("CPUMSF have sfb %d\n", libcpumf_have_sfb());
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rc = libcpumf_sfb_info(&sfb_min, &sfb_max);
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printf("libcpumf_sfb_info %d", rc);
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if (rc)
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printf(" sfb_min %lu sfb_max %lu", sfb_min, sfb_max);
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putchar('\n');
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return EXIT_SUCCESS;
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}
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