From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752957AbcEJOxV (ORCPT ); Tue, 10 May 2016 10:53:21 -0400 Received: from mail-pf0-f195.google.com ([209.85.192.195]:34376 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752914AbcEJOxT (ORCPT ); Tue, 10 May 2016 10:53:19 -0400 From: Namhyung Kim To: Steven Rostedt , Shuah Khan Cc: LKML , Masami Hiramatsu , linux-kselftest@vger.kernel.org Subject: [PATCH 2/2] kselftests/ftrace: Add a test case for event pid filtering Date: Tue, 10 May 2016 23:53:06 +0900 Message-Id: <1462891986-3608-2-git-send-email-namhyung@kernel.org> X-Mailer: git-send-email 2.8.0 In-Reply-To: <1462891986-3608-1-git-send-email-namhyung@kernel.org> References: <1462891986-3608-1-git-send-email-namhyung@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Check event is filtered by set_event_pid and options/event-fork. Signed-off-by: Namhyung Kim --- .../selftests/ftrace/test.d/event/event-pid.tc | 72 ++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/event/event-pid.tc diff --git a/tools/testing/selftests/ftrace/test.d/event/event-pid.tc b/tools/testing/selftests/ftrace/test.d/event/event-pid.tc new file mode 100644 index 000000000000..d4ab27b522f8 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/event/event-pid.tc @@ -0,0 +1,72 @@ +#!/bin/sh +# description: event tracing - restricts events based on pid + +do_reset() { + echo > set_event + echo > set_event_pid + echo 0 > options/event-fork + clear_trace +} + +fail() { #msg + do_reset + echo $1 + exit $FAIL +} + +yield() { + ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1 +} + +if [ ! -f set_event -o ! -d events/sched ]; then + echo "event tracing is not supported" + exit_unsupported +fi + +if [ ! -f set_event_pid ]; then + echo "event pid filtering is not supported" + exit_unsupported +fi + +reset_tracer +do_reset + +echo 1 > events/sched/sched_switch/enable + +yield + +count=`cat trace | grep sched_switch | wc -l` +if [ $count -eq 0 ]; then + fail "sched_switch events are not recorded" +fi + +do_reset + +read mypid rest < /proc/self/stat + +echo $mypid > set_event_pid +echo 'sched:sched_switch' > set_event + +yield + +count=`cat trace | grep sched_switch | grep -v "pid=$mypid" | wc -l` +if [ $count -ne 0 ]; then + fail "sched_switch events from other task are recorded" +fi + +do_reset + +echo $mypid > set_event_pid +echo 1 > options/event-fork +echo 1 > events/sched/sched_switch/enable + +yield + +count=`cat trace | grep sched_switch | grep -v "pid=$mypid" | wc -l` +if [ $count -eq 0 ]; then + fail "sched_switch events from other task are not recorded" +fi + +do_reset + +exit 0 -- 2.8.0