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
14 int
get_cpuid(char * buffer,size_t sz)15 get_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
32 char *
get_cpuid_str(struct perf_pmu * pmu __maybe_unused)33 get_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
arch_get_runtimeparam(const struct pmu_metric * pm)43 int 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