Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753750AbaJTKwN (ORCPT ); Mon, 20 Oct 2014 06:52:13 -0400 Received: from e06smtp16.uk.ibm.com ([195.75.94.112]:43932 "EHLO e06smtp16.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753404AbaJTKwJ (ORCPT ); Mon, 20 Oct 2014 06:52:09 -0400 From: Heiko Carstens To: Masami Hiramatsu , Ingo Molnar , Steven Rostedt Cc: linux-kernel@vger.kernel.org, Heiko Carstens Subject: [PATCH 1/2] ftracetest: add kprobes on ftrace testcase Date: Mon, 20 Oct 2014 12:52:02 +0200 Message-Id: <1413802323-5297-2-git-send-email-heiko.carstens@de.ibm.com> X-Mailer: git-send-email 1.8.5.5 In-Reply-To: <1413802323-5297-1-git-send-email-heiko.carstens@de.ibm.com> References: <1413802323-5297-1-git-send-email-heiko.carstens@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14102010-0025-0000-0000-000001F68EBF Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a kprobes on ftrace testcase. The testcase verifies that - enabling and disabling function tracing works on a function which already contains a dynamic kprobe - adding and removing a dynamic kprobe works on a function which is already enabled for function tracing Signed-off-by: Heiko Carstens --- .../ftrace/test.d/kprobe/kprobe_ftrace.tc | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc new file mode 100644 index 000000000000..ab41d2b29841 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_ftrace.tc @@ -0,0 +1,55 @@ +#!/bin/sh +# description: Kprobe dynamic event with function tracer + +[ -f kprobe_events ] || exit_unsupported # this is configurable +grep function available_tracers || exit_unsupported # this is configurable + +# prepare +echo nop > current_tracer +echo do_fork > set_ftrace_filter +echo 0 > events/enable +echo > kprobe_events +echo 'p:testprobe do_fork' > kprobe_events + +# kprobe on / ftrace off +echo 1 > events/kprobes/testprobe/enable +echo > trace +( echo "forked") +grep testprobe trace +! grep 'do_fork <-' trace + +# kprobe on / ftrace on +echo function > current_tracer +echo > trace +( echo "forked") +grep testprobe trace +grep 'do_fork <-' trace + +# kprobe off / ftrace on +echo 0 > events/kprobes/testprobe/enable +echo > trace +( echo "forked") +! grep testprobe trace +grep 'do_fork <-' trace + +# kprobe on / ftrace on +echo 1 > events/kprobes/testprobe/enable +echo function > current_tracer +echo > trace +( echo "forked") +grep testprobe trace +grep 'do_fork <-' trace + +# kprobe on / ftrace off +echo nop > current_tracer +echo > trace +( echo "forked") +grep testprobe trace +! grep 'do_fork <-' trace + +# cleanup +echo nop > current_tracer +echo > set_ftrace_filter +echo 0 > events/kprobes/testprobe/enable +echo > kprobe_events +echo > trace -- 1.8.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/