6d18804b96
A common problem is confusing CPU map indices with the CPU, by wrapping the CPU with a struct then this is avoided. This approach is similar to atomic_t. Committer notes: To make it build with BUILD_BPF_SKEL=1 these files needed the conversions to 'struct perf_cpu' usage: tools/perf/util/bpf_counter.c tools/perf/util/bpf_counter_cgroup.c tools/perf/util/bpf_ftrace.c Also perf_env__get_cpu() was removed back in "perf cpumap: Switch cpu_map__build_map to cpu function". Additionally these needed to be fixed for the ARM builds to complete: tools/perf/arch/arm/util/cs-etm.c tools/perf/arch/arm64/util/pmu.c Suggested-by: John Garry <john.garry@huawei.com> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Clarke <pc@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Stephane Eranian <eranian@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Vineet Singh <vineet.singh@intel.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: zhengjun.xing@intel.com Link: https://lore.kernel.org/r/20220105061351.120843-49-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
33 lines
943 B
C
33 lines
943 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __LIBPERF_INTERNAL_CPUMAP_H
|
|
#define __LIBPERF_INTERNAL_CPUMAP_H
|
|
|
|
#include <linux/refcount.h>
|
|
|
|
/** A wrapper around a CPU to avoid confusion with the perf_cpu_map's map's indices. */
|
|
struct perf_cpu {
|
|
int cpu;
|
|
};
|
|
|
|
/**
|
|
* A sized, reference counted, sorted array of integers representing CPU
|
|
* numbers. This is commonly used to capture which CPUs a PMU is associated
|
|
* with. The indices into the cpumap are frequently used as they avoid having
|
|
* gaps if CPU numbers were used. For events associated with a pid, rather than
|
|
* a CPU, a single dummy map with an entry of -1 is used.
|
|
*/
|
|
struct perf_cpu_map {
|
|
refcount_t refcnt;
|
|
/** Length of the map array. */
|
|
int nr;
|
|
/** The CPU values. */
|
|
struct perf_cpu map[];
|
|
};
|
|
|
|
#ifndef MAX_NR_CPUS
|
|
#define MAX_NR_CPUS 2048
|
|
#endif
|
|
|
|
int perf_cpu_map__idx(const struct perf_cpu_map *cpus, struct perf_cpu cpu);
|
|
|
|
#endif /* __LIBPERF_INTERNAL_CPUMAP_H */
|