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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>
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
#ifndef __PERF_MMAP_H
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#define __PERF_MMAP_H 1
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#include <internal/mmap.h>
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#include <linux/compiler.h>
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#include <linux/refcount.h>
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#include <linux/types.h>
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#include <linux/ring_buffer.h>
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#include <linux/bitops.h>
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#include <perf/cpumap.h>
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#include <stdbool.h>
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#include <pthread.h> // for cpu_set_t
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#ifdef HAVE_AIO_SUPPORT
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#include <aio.h>
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#endif
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#include "auxtrace.h"
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#include "event.h"
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struct aiocb;
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struct mmap_cpu_mask {
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unsigned long *bits;
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size_t nbits;
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};
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#define MMAP_CPU_MASK_BYTES(m) \
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(BITS_TO_LONGS(((struct mmap_cpu_mask *)m)->nbits) * sizeof(unsigned long))
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/**
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* struct mmap - perf's ring buffer mmap details
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*
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* @refcnt - e.g. code using PERF_EVENT_IOC_SET_OUTPUT to share this
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*/
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struct mmap {
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struct perf_mmap core;
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struct auxtrace_mmap auxtrace_mmap;
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#ifdef HAVE_AIO_SUPPORT
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struct {
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void **data;
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struct aiocb *cblocks;
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struct aiocb **aiocb;
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int nr_cblocks;
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} aio;
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#endif
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struct mmap_cpu_mask affinity_mask;
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void *data;
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int comp_level;
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};
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struct mmap_params {
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struct perf_mmap_param core;
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int nr_cblocks, affinity, flush, comp_level;
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struct auxtrace_mmap_params auxtrace_mp;
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};
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int mmap__mmap(struct mmap *map, struct mmap_params *mp, int fd, struct perf_cpu cpu);
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void mmap__munmap(struct mmap *map);
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union perf_event *perf_mmap__read_forward(struct mmap *map);
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int perf_mmap__push(struct mmap *md, void *to,
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int push(struct mmap *map, void *to, void *buf, size_t size));
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size_t mmap__mmap_len(struct mmap *map);
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void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag);
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int mmap_cpu_mask__duplicate(struct mmap_cpu_mask *original,
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struct mmap_cpu_mask *clone);
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#endif /*__PERF_MMAP_H */
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