linux-kernel - [patch] perf_event_open.2: add PERF_SAMPLE_BRANCH

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Date:   Fri, 21 Oct 2016 16:55:21 -0400 (EDT)
From:   Vince Weaver <vincent.weaver@...ne.edu>
To:     "Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
cc:     linux-man@...r.kernel.org, linux-kernel@...r.kernel.org,
        Stephane Eranian <eranian@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: [patch] perf_event_open.2: add PERF_SAMPLE_BRANCH_CALL branch sample
 type


Linux 4.4 (c229bf9dc179d2023e185c0f705bdf68484c1e73) added
the PERF_SAMPLE_BRANCH_CALL branch sample type, which confusingly
is a direct-call only subset of what PERF_SAMPLE_BRANCH_ANY_CALL
provides.

Signed-off-by: Vince Weaver <vincent.weaver@...ne.edu>

diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
index fade28c..8d985b3 100644
--- a/man2/perf_event_open.2
+++ b/man2/perf_event_open.2
@@ -1256,14 +1256,18 @@ following bits must be set.
 Any branch type.
 .TP
 .B PERF_SAMPLE_BRANCH_ANY_CALL
-Any call branch.
-.TP
-.B PERF_SAMPLE_BRANCH_ANY_RETURN
-Any return branch.
+Any call branch (includes direct calls, indirect calls, and far jumps).
 .TP
 .B PERF_SAMPLE_BRANCH_IND_CALL
 Indirect calls.
 .TP
+.BR PERF_SAMPLE_BRANCH_CALL " (since Linux 4.4)"
+.\" commit c229bf9dc179d2023e185c0f705bdf68484c1e73
+Direct calls.
+.TP
+.B PERF_SAMPLE_BRANCH_ANY_RETURN
+Any return branch.
+.TP
 .BR PERF_SAMPLE_BRANCH_IND_JUMP " (since Linux 4.2)"
 .\" commit c9fdfa14c3792c0160849c484e83aa57afd80ccc
 Indirect jumps.