linux-kernel - [PATCH] perf session: Fix undeclared 'oe'

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Date:   Wed, 11 Apr 2018 15:41:35 -0300
From:   Murilo Opsfelder Araujo <muriloo@...ux.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     Murilo Opsfelder Araujo <muriloo@...ux.ibm.com>,
        stable@...r.kernel.org,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        David Carrillo-Cisneros <davidcc@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        He Kuang <hekuang@...wei.com>, Ingo Molnar <mingo@...hat.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Paul Mackerras <paulus@...ba.org>,
        Paul Turner <pjt@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Sasha Levin <alexander.levin@...rosoft.com>,
        Simon Que <sque@...omium.org>,
        Stephane Eranian <eranian@...gle.com>,
        Wang Nan <wangnan0@...wei.com>
Subject: [PATCH] perf session: Fix undeclared 'oe'

Using linux-3.18.y branch, perf build fails with the following:

    $ make -s -j16 -C tools/perf V=1 WERROR=0 NO_LIBUNWIND=1 HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_LIBNUMA=1 NO_STRLCPY=1 NO_BIONIC=1 prefix=/usr DESTDIR=/tmp/builddir/build all
    [...]
    util/session.c: In function ‘__perf_session__process_pipe_events’:
    util/session.c:1093:36: error: ‘oe’ undeclared (first use in this function)
      ordered_events__set_copy_on_queue(oe, true);
                                        ^
    util/session.c:1093:36: note: each undeclared identifier is reported only once for each function it appears in

This patch fixes it for linux-3.18.y branch.

Fixes: 95b33b99cdd6 ("perf inject: Copy events when reordering events in pipe mode")
Cc: <stable@...r.kernel.org> # 3.18.x
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: David Carrillo-Cisneros <davidcc@...gle.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: He Kuang <hekuang@...wei.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Paul Turner <pjt@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Sasha Levin <alexander.levin@...rosoft.com>
Cc: Simon Que <sque@...omium.org>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Wang Nan <wangnan0@...wei.com>
Signed-off-by: Murilo Opsfelder Araujo <muriloo@...ux.ibm.com>
---
 tools/perf/util/session.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index dc3d3b1b813e..c2d4a7ec40df 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1073,6 +1073,7 @@ volatile int session_done;
 static int __perf_session__process_pipe_events(struct perf_session *session,
 					       struct perf_tool *tool)
 {
+	struct ordered_events *oe = &session->ordered_events;
 	int fd = perf_data_file__fd(session->file);
 	union perf_event *event;
 	uint32_t size, cur_size = 0;
-- 
2.14.3