perf_event_open.2: 4.1 PERF_EVENT_IOC_SET_BPF support

This manpage patch relates to the addition of the
PERF_EVENT_IOC_SET_BPF ioctl in the following commit:

	commit 2541517c32be2531e0da59dfd7efc1ce844644f5
	Author: Alexei Starovoitov <ast@plumgrid.com>

	tracing, perf: Implement BPF programs attached to kprobes

	Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
	Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
	Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
	Cc: Andrew Morton <akpm@linux-foundation.org>
	Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
	Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
	Cc: Daniel Borkmann <daniel@iogearbox.net>
	Cc: David S. Miller <davem@davemloft.net>
	Cc: Jiri Olsa <jolsa@redhat.com>
	Cc: Linus Torvalds <torvalds@linux-foundation.org>
	Cc: Namhyung Kim <namhyung@kernel.org>
	Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
	Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1427312966-8434-4-git-send-email-ast@plumgrid.com
	Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
index 257be7c0674f29449a57f9b56cf2f3d7bafa5304..3d170e7a4fd61572ee0169c701fccd2314641932 100644 (file)
--- a/man2/perf_event_open.2
+++ b/man2/perf_event_open.2
@@ -2570,6 +2570,19 @@ This returns the event ID value for the given event file descriptor.
 
 The argument is a pointer to a 64-bit unsigned integer
 to hold the result.
+.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.
+You need
+.B CAP_SYS_ADMIN
+privileges to use this ioctl.
+
+The argument is a BPF program file descriptor that was created by
+a previous
+.BR bpf (2)
+system call.
 .SS Using prctl
 A process can enable or disable all the event groups that are
 attached to it using the