diff options
| author | Christy Lee <christylee@fb.com> | 2021-12-29 12:41:56 -0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2022-01-05 15:27:43 -0800 |
| commit | 7218c28c87f57c131879a75a226b9033ac90b266 (patch) | |
| tree | 68d5ab4ab7e5170a76709ab7e3cb4077e9c847e3 /tools/lib | |
| parent | 28479934f26bcf9ddeb94125e05ddc5c4312b1f3 (diff) | |
| download | linux-7218c28c87f57c131879a75a226b9033ac90b266.tar.bz2 | |
libbpf: Deprecate bpf_perf_event_read_simple() API
With perf_buffer__poll() and perf_buffer__consume() APIs available,
there is no reason to expose bpf_perf_event_read_simple() API to
users. If users need custom perf buffer, they could re-implement
the function.
Mark bpf_perf_event_read_simple() and move the logic to a new
static function so it can still be called by other functions in the
same file.
[0] Closes: https://github.com/libbpf/libbpf/issues/310
Signed-off-by: Christy Lee <christylee@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211229204156.13569-1-christylee@fb.com
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 22 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf.h | 1 |
2 files changed, 15 insertions, 8 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 9cb99d1e2385..1d02ba7f11b4 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -10676,10 +10676,10 @@ struct bpf_link *bpf_map__attach_struct_ops(const struct bpf_map *map) return link; } -enum bpf_perf_event_ret -bpf_perf_event_read_simple(void *mmap_mem, size_t mmap_size, size_t page_size, - void **copy_mem, size_t *copy_size, - bpf_perf_event_print_t fn, void *private_data) +static enum bpf_perf_event_ret +perf_event_read_simple(void *mmap_mem, size_t mmap_size, size_t page_size, + void **copy_mem, size_t *copy_size, + bpf_perf_event_print_t fn, void *private_data) { struct perf_event_mmap_page *header = mmap_mem; __u64 data_head = ring_buffer_read_head(header); @@ -10724,6 +10724,12 @@ bpf_perf_event_read_simple(void *mmap_mem, size_t mmap_size, size_t page_size, return libbpf_err(ret); } +__attribute__((alias("perf_event_read_simple"))) +enum bpf_perf_event_ret +bpf_perf_event_read_simple(void *mmap_mem, size_t mmap_size, size_t page_size, + void **copy_mem, size_t *copy_size, + bpf_perf_event_print_t fn, void *private_data); + struct perf_buffer; struct perf_buffer_params { @@ -11132,10 +11138,10 @@ static int perf_buffer__process_records(struct perf_buffer *pb, { enum bpf_perf_event_ret ret; - ret = bpf_perf_event_read_simple(cpu_buf->base, pb->mmap_size, - pb->page_size, &cpu_buf->buf, - &cpu_buf->buf_size, - perf_buffer__process_record, cpu_buf); + ret = perf_event_read_simple(cpu_buf->base, pb->mmap_size, + pb->page_size, &cpu_buf->buf, + &cpu_buf->buf_size, + perf_buffer__process_record, cpu_buf); if (ret != LIBBPF_PERF_EVENT_CONT) return ret; return 0; diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 85dfef88b3d2..ddf1cc9e7803 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -1026,6 +1026,7 @@ LIBBPF_API int perf_buffer__buffer_fd(const struct perf_buffer *pb, size_t buf_i typedef enum bpf_perf_event_ret (*bpf_perf_event_print_t)(struct perf_event_header *hdr, void *private_data); +LIBBPF_DEPRECATED_SINCE(0, 8, "use perf_buffer__poll() or perf_buffer__consume() instead") LIBBPF_API enum bpf_perf_event_ret bpf_perf_event_read_simple(void *mmap_mem, size_t mmap_size, size_t page_size, void **copy_mem, size_t *copy_size, |