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@vger.kernel.org # 3.18.x Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Andi Kleen ak@linux.intel.com Cc: Arnaldo Carvalho de Melo acme@redhat.com Cc: David Carrillo-Cisneros davidcc@google.com Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: He Kuang hekuang@huawei.com Cc: Ingo Molnar mingo@redhat.com Cc: Jiri Olsa jolsa@kernel.org Cc: Masami Hiramatsu mhiramat@kernel.org Cc: Paul Mackerras paulus@samba.org Cc: Paul Turner pjt@google.com Cc: Peter Zijlstra peterz@infradead.org Cc: Sasha Levin alexander.levin@microsoft.com Cc: Simon Que sque@chromium.org Cc: Stephane Eranian eranian@google.com Cc: Wang Nan wangnan0@huawei.com Signed-off-by: Murilo Opsfelder Araujo muriloo@linux.ibm.com --- Hi, Greg.

Perf build on linux-3.18.y is broken since v3.18.101 (v3.18.100 worked just fine). This fixes it.

Changes since v2: - rebased on v3.18.108

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;