pmu.c (58e16d792a6a8c6b750f637a4649967fcac853dc) pmu.c (5e51b0bb245d963f5ce750256c504be95201e38c)
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/list.h>
3#include <linux/compiler.h>
4#include <linux/string.h>
5#include <linux/zalloc.h>
6#include <sys/types.h>
7#include <errno.h>
8#include <fcntl.h>
9#include <sys/stat.h>
10#include <unistd.h>
11#include <stdio.h>
12#include <stdbool.h>
13#include <stdarg.h>
14#include <dirent.h>
15#include <api/fs/fs.h>
16#include <locale.h>
17#include <regex.h>
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/list.h>
3#include <linux/compiler.h>
4#include <linux/string.h>
5#include <linux/zalloc.h>
6#include <sys/types.h>
7#include <errno.h>
8#include <fcntl.h>
9#include <sys/stat.h>
10#include <unistd.h>
11#include <stdio.h>
12#include <stdbool.h>
13#include <stdarg.h>
14#include <dirent.h>
15#include <api/fs/fs.h>
16#include <locale.h>
17#include <regex.h>
18#include <perf/cpumap.h>
19#include "debug.h"
18#include "pmu.h"
19#include "parse-events.h"
20#include "cpumap.h"
21#include "header.h"
22#include "pmu-events/pmu-events.h"
23#include "cache.h"
24#include "string2.h"
25

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567 continue;
568 /* add to static LIST_HEAD(pmus): */
569 perf_pmu__find(dent->d_name);
570 }
571
572 closedir(dir);
573}
574
20#include "pmu.h"
21#include "parse-events.h"
22#include "cpumap.h"
23#include "header.h"
24#include "pmu-events/pmu-events.h"
25#include "cache.h"
26#include "string2.h"
27

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569 continue;
570 /* add to static LIST_HEAD(pmus): */
571 perf_pmu__find(dent->d_name);
572 }
573
574 closedir(dir);
575}
576
575static struct cpu_map *__pmu_cpumask(const char *path)
577static struct perf_cpu_map *__pmu_cpumask(const char *path)
576{
577 FILE *file;
578{
579 FILE *file;
578 struct cpu_map *cpus;
580 struct perf_cpu_map *cpus;
579
580 file = fopen(path, "r");
581 if (!file)
582 return NULL;
583
581
582 file = fopen(path, "r");
583 if (!file)
584 return NULL;
585
584 cpus = cpu_map__read(file);
586 cpus = perf_cpu_map__read(file);
585 fclose(file);
586 return cpus;
587}
588
589/*
590 * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64)
591 * may have a "cpus" file.
592 */
593#define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask"
594#define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus"
595
587 fclose(file);
588 return cpus;
589}
590
591/*
592 * Uncore PMUs have a "cpumask" file under sysfs. CPU PMUs (e.g. on arm/arm64)
593 * may have a "cpus" file.
594 */
595#define CPUS_TEMPLATE_UNCORE "%s/bus/event_source/devices/%s/cpumask"
596#define CPUS_TEMPLATE_CPU "%s/bus/event_source/devices/%s/cpus"
597
596static struct cpu_map *pmu_cpumask(const char *name)
598static struct perf_cpu_map *pmu_cpumask(const char *name)
597{
598 char path[PATH_MAX];
599{
600 char path[PATH_MAX];
599 struct cpu_map *cpus;
601 struct perf_cpu_map *cpus;
600 const char *sysfs = sysfs__mountpoint();
601 const char *templates[] = {
602 CPUS_TEMPLATE_UNCORE,
603 CPUS_TEMPLATE_CPU,
604 NULL
605 };
606 const char **template;
607

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616 }
617
618 return NULL;
619}
620
621static bool pmu_is_uncore(const char *name)
622{
623 char path[PATH_MAX];
602 const char *sysfs = sysfs__mountpoint();
603 const char *templates[] = {
604 CPUS_TEMPLATE_UNCORE,
605 CPUS_TEMPLATE_CPU,
606 NULL
607 };
608 const char **template;
609

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618 }
619
620 return NULL;
621}
622
623static bool pmu_is_uncore(const char *name)
624{
625 char path[PATH_MAX];
624 struct cpu_map *cpus;
626 struct perf_cpu_map *cpus;
625 const char *sysfs = sysfs__mountpoint();
626
627 snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name);
628 cpus = __pmu_cpumask(path);
627 const char *sysfs = sysfs__mountpoint();
628
629 snprintf(path, PATH_MAX, CPUS_TEMPLATE_UNCORE, sysfs, name);
630 cpus = __pmu_cpumask(path);
629 cpu_map__put(cpus);
631 perf_cpu_map__put(cpus);
630
631 return !!cpus;
632}
633
634/*
635 * PMU CORE devices have different name other than cpu in sysfs on some
636 * platforms.
637 * Looking for possible sysfs files to identify the arm core device.

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633 return !!cpus;
634}
635
636/*
637 * PMU CORE devices have different name other than cpu in sysfs on some
638 * platforms.
639 * Looking for possible sysfs files to identify the arm core device.

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