linux-kernel - Re: [patch 03/10] perf_event_open.2: 4.1 PERF_EVENT_IOC_SET

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Date:	Thu, 16 Apr 2015 12:00:19 -0700
From:	Alexei Starovoitov <ast@...mgrid.com>
To:	Vince Weaver <vincent.weaver@...ne.edu>,
	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
CC:	linux-man@...r.kernel.org, linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	"David S. Miller" <davem@...emloft.net>,
	Jiri Olsa <jolsa@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Namhyung Kim <namhyung@...nel.org>
Subject: Re: [patch 03/10] perf_event_open.2: 4.1 PERF_EVENT_IOC_SET_BPF support

On 4/16/15 11:13 AM, Vince Weaver wrote:
>
> This manpage patch relates to the addition of the
> PERF_EVENT_IOC_SET_BPF ioctl in the following commit:
>
> Signed-off-by: Vince Weaver <vincent.weaver@...ne.edu>
>
> +.TP
> +.BR PERF_EVENT_IOC_SET_BPF " (since Linux 4.1)"
> +.\" commit 2541517c32be2531e0da59dfd7efc1ce844644f5
> +This allows attaching a Berkeley Packet Filter (BPF)
> +program to an existing kprobe tracepoint event.
> +
> +The argument is a BPF program id that was created by

... is a BPF program FD ...

other than that it looks good. Thank you for documenting!

btw, I'll refresh my month old bpf(2) patch:
http://thread.gmane.org/gmane.linux.man/8676
with the latest details and repost.
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