bpf tools: New API to get name from a BPF object
authorWang Nan <wangnan0@huawei.com>
Thu, 27 Aug 2015 02:30:55 +0000 (02:30 +0000)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Mon, 31 Aug 2015 19:53:15 +0000 (16:53 -0300)
commitacf860ae7c53cc8b0c5d372c218332aac3eeba4f
tree95c0521fcfff8e0c2dc88bca26ecb5fd3e9ec885
parent97db62062ac76e314c8bda4dc5b63f0ea906d15f
bpf tools: New API to get name from a BPF object

Before this patch there's no way to connect a loaded bpf object
to its source file. However, during applying perf's '--filter' to BPF
object, without this connection makes things harder, because perf loads
all programs together, but '--filter' setting is for each object.

The API of bpf_object__open_buffer() is changed to allow passing a name.
Fortunately, at this time there's only one user of it (perf test LLVM),
so we change it together.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1440742821-44548-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/lib/bpf/libbpf.c
tools/lib/bpf/libbpf.h
tools/perf/tests/llvm.c