LXR linux/tools/perf/arch/powerpc/util/header.c

   1// SPDX-License-Identifier: GPL-2.0
   2#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
  14int
  15get_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, "%.8lx", mfspr(SPRN_PVR)) < 0)
  38                bufp = NULL;
  39
  40        return bufp;
  41}
  42
  43int arch_get_runtimeparam(struct pmu_event *pe)
  44{
  45        int count;
  46        char path[PATH_MAX] = "/devices/hv_24x7/interface/";
  47
  48        atoi(pe->aggr_mode) == PerChip ? strcat(path, "sockets") : strcat(path, "coresperchip");
  49        return sysfs__read_int(path, &count) < 0 ? 1 : count;
  50}
  51