From: Yonghong Song <y...@fb.com>
Date: Mon, 23 Oct 2017 23:53:06 -0700
> This patch set adds support to permit multiple bpf prog attachments
> for a single perf tracepoint event. Patch 1 does some cleanup such
> that perf_event_{set|free}_bpf_handler is called under the
> same condition. Patch 2 has the core implementation, and
> Patch 3 adds a test case.
>
> Changelogs:
> v2 -> v3:
> . fix compilation error.
> v1 -> v2:
> . fix a potential deadlock issue discovered by Daniel.
> . fix some coding style issues.
Series applied.
