51 lines · c
1// SPDX-License-Identifier: GPL-2.02#include <sys/types.h>3#include <errno.h>4#include <unistd.h>5#include <stdio.h>6#include <stdlib.h>7#include <string.h>8#include <linux/stringify.h>9#include "header.h"10#include "utils_header.h"11#include "metricgroup.h"12#include <api/fs/fs.h>13 14int15get_cpuid(char *buffer, size_t sz)16{17 unsigned long pvr;18 int nb;19 20 pvr = mfspr(SPRN_PVR);21 22 nb = scnprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr));23 24 /* look for end marker to ensure the entire data fit */25 if (strchr(buffer, '$')) {26 buffer[nb-1] = '\0';27 return 0;28 }29 return ENOBUFS;30}31 32char *33get_cpuid_str(struct perf_pmu *pmu __maybe_unused)34{35 char *bufp;36 37 if (asprintf(&bufp, "0x%.8lx", mfspr(SPRN_PVR)) < 0)38 bufp = NULL;39 40 return bufp;41}42 43int arch_get_runtimeparam(const struct pmu_metric *pm)44{45 int count;46 char path[PATH_MAX] = "/devices/hv_24x7/interface/";47 48 strcat(path, pm->aggr_mode == PerChip ? "sockets" : "coresperchip");49 return sysfs__read_int(path, &count) < 0 ? 1 : count;50}51