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authorArnaldo Carvalho de Melo <acme@redhat.com>2018-08-07 15:10:19 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-08-08 15:55:57 -0300
commit8fa25f303adfed6eab921db8e242e59dd0b3b004 (patch)
treecc4670e4a020fb26672592760acb888943a7f63c /tools/perf
parentaa31be3a4874d91fb40d872f1865805ab411035c (diff)
downloadlinux-8fa25f303adfed6eab921db8e242e59dd0b3b004.tar.bz2
perf bpf: Add wrappers to BPF_FUNC_probe_read(_str) functions
Will be used shortly in the augmented syscalls work together with a PERF_COUNT_SW_BPF_OUTPUT software event to insert syscalls + pointer contents in the perf ring buffer, to be consumed by 'perf trace' beautifiers. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-ajlkpz4cd688ulx1u30htkj3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/include/bpf/bpf.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/include/bpf/bpf.h b/tools/perf/include/bpf/bpf.h
index 1f632b56bb34..47897d65e799 100644
--- a/tools/perf/include/bpf/bpf.h
+++ b/tools/perf/include/bpf/bpf.h
@@ -30,4 +30,7 @@ struct bpf_map {
char _license[] SEC("license") = #name; \
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;
+
#endif /* _PERF_BPF_H */