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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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5508c9dae2
Introduce bpf_counter_ops->disable(), which is used stop counting the event. Committer notes: Added a dummy bpf_counter__disable() to the python binding to avoid having 'perf test python' failing. bpf_counter isn't supported in the python binding. Signed-off-by: Song Liu <song@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: kernel-team@fb.com Link: https://lore.kernel.org/r/20210425214333.1090950-6-song@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_BPF_COUNTER_H
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#define __PERF_BPF_COUNTER_H 1
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#include <linux/list.h>
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struct evsel;
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struct target;
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struct bpf_counter;
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typedef int (*bpf_counter_evsel_op)(struct evsel *evsel);
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typedef int (*bpf_counter_evsel_target_op)(struct evsel *evsel,
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struct target *target);
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typedef int (*bpf_counter_evsel_install_pe_op)(struct evsel *evsel,
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int cpu,
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int fd);
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struct bpf_counter_ops {
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bpf_counter_evsel_target_op load;
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bpf_counter_evsel_op enable;
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bpf_counter_evsel_op disable;
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bpf_counter_evsel_op read;
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bpf_counter_evsel_op destroy;
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bpf_counter_evsel_install_pe_op install_pe;
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};
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struct bpf_counter {
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void *skel;
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struct list_head list;
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};
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#ifdef HAVE_BPF_SKEL
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int bpf_counter__load(struct evsel *evsel, struct target *target);
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int bpf_counter__enable(struct evsel *evsel);
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int bpf_counter__disable(struct evsel *evsel);
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int bpf_counter__read(struct evsel *evsel);
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void bpf_counter__destroy(struct evsel *evsel);
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int bpf_counter__install_pe(struct evsel *evsel, int cpu, int fd);
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#else /* HAVE_BPF_SKEL */
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#include <linux/err.h>
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static inline int bpf_counter__load(struct evsel *evsel __maybe_unused,
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struct target *target __maybe_unused)
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{
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return 0;
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}
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static inline int bpf_counter__enable(struct evsel *evsel __maybe_unused)
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{
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return 0;
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}
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static inline int bpf_counter__disable(struct evsel *evsel __maybe_unused)
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{
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return 0;
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}
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static inline int bpf_counter__read(struct evsel *evsel __maybe_unused)
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{
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return -EAGAIN;
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}
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static inline void bpf_counter__destroy(struct evsel *evsel __maybe_unused)
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{
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}
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static inline int bpf_counter__install_pe(struct evsel *evsel __maybe_unused,
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int cpu __maybe_unused,
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int fd __maybe_unused)
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{
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return 0;
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}
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#endif /* HAVE_BPF_SKEL */
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#endif /* __PERF_BPF_COUNTER_H */
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