[PATCH 07/11] perf: Handle injection iotcl for tracepoints from perf record

[Frederic Weisbecker]

Call the injection iotcl request for tracepoint events, in case
some of them support it.

Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Hitoshi Mitake <mitake@xxxxxxxxxxxxxxxxxxxxx>
Cc: Li Zefan <lizf@xxxxxxxxxxxxxx>
Cc: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Jens Axboe <jens.axboe@xxxxxxxxxx>
---
 tools/perf/builtin-record.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index eea5691..da42519 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -386,6 +386,15 @@ try_again:
 	}
 
 	ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_ENABLE);
+
+	/*
+	 * If a tracepoint has some events he wants us to catchup
+	 * let's inject them. We may have such injectable event
+	 * in several cpus, we want only one injection, so pick the
+	 * first cpu
+	 */
+	if (attr->type == PERF_TYPE_TRACEPOINT && !nr_cpu)
+		ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_INJECT);
 }
 
 static void open_counters(int cpu, pid_t pid)
-- 
1.6.2.3

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