From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
As it fails to build in some systems with:
libbpf.c: In function 'perf_buffer__new':
libbpf.c:4515: error: unknown field 'sample_period' specified in initializer
libbpf.c:4516: error: unknown field 'wakeup_events' specified in initializer
Doing as:
attr.sample_period = 1;
I.e. not as a designated initializer makes it build everywhere.
Cc: Andrii Nakryiko <andriin@xxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Fixes: fb84b8224655 ("libbpf: add perf buffer API")
Link: https://lkml.kernel.org/n/tip-hnlmch8qit1ieksfppmr32si@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/lib/bpf/libbpf.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index b1dec5b1de54..aaca132def74 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -4508,13 +4508,13 @@ struct perf_buffer *perf_buffer__new(int map_fd, size_t page_cnt,
const struct perf_buffer_opts *opts)
{
struct perf_buffer_params p = {};
- struct perf_event_attr attr = {
- .config = PERF_COUNT_SW_BPF_OUTPUT,
- .type = PERF_TYPE_SOFTWARE,
- .sample_type = PERF_SAMPLE_RAW,
- .sample_period = 1,
- .wakeup_events = 1,
- };
+ struct perf_event_attr attr = { 0, };
+
+ attr.config = PERF_COUNT_SW_BPF_OUTPUT,
+ attr.type = PERF_TYPE_SOFTWARE;
+ attr.sample_type = PERF_SAMPLE_RAW;
+ attr.sample_period = 1;
+ attr.wakeup_events = 1;
p.attr = &attr;
p.sample_cb = opts ? opts->sample_cb : NULL;
--
2.21.0
