From: Arnaldo Carvalho de Melo <a...@redhat.com> So that we don't always carry that __bpf_output__ map, leaving that to the scripts wanting to use that facility.
'perf trace' will be changed to look if that map is present and only setup the bpf-output events if so. Cc: Adrian Hunter <adrian.hun...@intel.com> Cc: Jiri Olsa <jo...@kernel.org> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Wang Nan <wangn...@huawei.com> Link: https://lkml.kernel.org/n/tip-azwys8irxqx9053vpajr0...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/include/bpf/bpf.h | 2 ++ tools/perf/include/bpf/stdio.h | 3 --- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/tools/perf/include/bpf/bpf.h b/tools/perf/include/bpf/bpf.h index bd5d7b4d7760..e667577207dc 100644 --- a/tools/perf/include/bpf/bpf.h +++ b/tools/perf/include/bpf/bpf.h @@ -55,4 +55,6 @@ int _version SEC("version") = LINUX_VERSION_CODE; static int (*probe_read)(void *dst, int size, const void *unsafe_addr) = (void *)BPF_FUNC_probe_read; static int (*probe_read_str)(void *dst, int size, const void *unsafe_addr) = (void *)BPF_FUNC_probe_read_str; +static int (*perf_event_output)(void *, struct bpf_map *, int, void *, unsigned long) = (void *)BPF_FUNC_perf_event_output; + #endif /* _PERF_BPF_H */ diff --git a/tools/perf/include/bpf/stdio.h b/tools/perf/include/bpf/stdio.h index 2899cb7bfed8..316af5b2ff35 100644 --- a/tools/perf/include/bpf/stdio.h +++ b/tools/perf/include/bpf/stdio.h @@ -9,9 +9,6 @@ struct bpf_map SEC("maps") __bpf_stdout__ = { .max_entries = __NR_CPUS__, }; -static int (*perf_event_output)(void *, struct bpf_map *, int, void *, unsigned long) = - (void *)BPF_FUNC_perf_event_output; - #define puts(from) \ ({ const int __len = sizeof(from); \ char __from[__len] = from; \ -- 2.19.2
