From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S968231AbeE3AFk (ORCPT ); Tue, 29 May 2018 20:05:40 -0400 Received: from mail-pf0-f193.google.com ([209.85.192.193]:46436 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967996AbeE3AFW (ORCPT ); Tue, 29 May 2018 20:05:22 -0400 X-Google-Smtp-Source: ADUXVKKM6LYJ1SRwt9wT3lmUIqi/3Yzztz2N7aloWv3U9hwgGgllrN8iP68KbyEJSpar7KkTl0CSTw== From: Joel Fernandes X-Google-Original-From: Joel Fernandes To: linux-kernel@vger.kernel.org Cc: kernel-team@android.com, "Joel Fernandes (Google)" , Boqun Feng , Byungchul Park , Erick Reyes , Ingo Molnar , Julia Cartwright , linux-kselftest@vger.kernel.org, Masami Hiramatsu , Mathieu Desnoyers , Namhyung Kim , Paul McKenney , Peter Zijlstra , Shuah Khan , Steven Rostedt , Thomas Glexiner , Todd Kjos , Tom Zanussi Subject: [PATCH v8 8/8] kselftests: Add tests for the preemptoff and irqsoff tracers Date: Tue, 29 May 2018 17:05:00 -0700 Message-Id: <20180530000500.257225-9-joel@joelfernandes.org> X-Mailer: git-send-email 2.17.0.921.gf22659ad46-goog In-Reply-To: <20180530000500.257225-1-joel@joelfernandes.org> References: <20180530000500.257225-1-joel@joelfernandes.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Joel Fernandes (Google)" Here we add unit tests for the preemptoff and irqsoff tracer by using a kernel module introduced previously to trigger atomic sections in the kernel. Signed-off-by: Joel Fernandes (Google) --- tools/testing/selftests/ftrace/config | 3 + .../test.d/preemptirq/irqsoff_tracer.tc | 74 +++++++++++++++++++ 2 files changed, 77 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc diff --git a/tools/testing/selftests/ftrace/config b/tools/testing/selftests/ftrace/config index b01924c71c09..29588b328345 100644 --- a/tools/testing/selftests/ftrace/config +++ b/tools/testing/selftests/ftrace/config @@ -4,3 +4,6 @@ CONFIG_FUNCTION_PROFILER=y CONFIG_TRACER_SNAPSHOT=y CONFIG_STACK_TRACER=y CONFIG_HIST_TRIGGERS=y +CONFIG_PREEMPT_TRACER=y +CONFIG_IRQSOFF_TRACER=y +CONFIG_TEST_ATOMIC_SECTIONS=m diff --git a/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc b/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc new file mode 100644 index 000000000000..1764ff22c02b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc @@ -0,0 +1,74 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: test for the preemptirqsoff tracer + +MOD=test_atomic_sections + +fail() { + reset_tracer + rmmod $MOD || true + exit_fail +} + +unsup() { #msg + reset_tracer + rmmod $MOD || true + echo $1 + exit_unsupported +} + +modprobe $MOD || unsup "$MOD module not available" +rmmod $MOD + +grep -q "preemptoff" available_tracers || unsup "preemptoff tracer not enabled" +grep -q "irqsoff" available_tracers || unsup "irqsoff tracer not enabled" + +reset_tracer + +# Simulate preemptoff section for half a second couple of times +echo preemptoff > current_tracer +sleep 1 +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail + +cat trace + +# Confirm which tracer +grep -q "tracer: preemptoff" trace || fail + +# Check the end of the section +egrep -q "5.....us : " trace || fail + +# Check for 500ms of latency +egrep -q "latency: 5..... us" trace || fail + +reset_tracer + +# Simulate irqsoff section for half a second couple of times +echo irqsoff > current_tracer +sleep 1 +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail + +cat trace + +# Confirm which tracer +grep -q "tracer: irqsoff" trace || fail + +# Check the end of the section +egrep -q "5.....us : " trace || fail + +# Check for 500ms of latency +egrep -q "latency: 5..... us" trace || fail + +reset_tracer +exit 0 + -- 2.17.0.921.gf22659ad46-goog From mboxrd@z Thu Jan 1 00:00:00 1970 From: joelaf at google.com (Joel Fernandes) Date: Tue, 29 May 2018 17:05:00 -0700 Subject: [PATCH v8 8/8] kselftests: Add tests for the preemptoff and irqsoff tracers In-Reply-To: <20180530000500.257225-1-joel@joelfernandes.org> References: <20180530000500.257225-1-joel@joelfernandes.org> Message-ID: <20180530000500.257225-9-joel@joelfernandes.org> From: "Joel Fernandes (Google)" Here we add unit tests for the preemptoff and irqsoff tracer by using a kernel module introduced previously to trigger atomic sections in the kernel. Signed-off-by: Joel Fernandes (Google) --- tools/testing/selftests/ftrace/config | 3 + .../test.d/preemptirq/irqsoff_tracer.tc | 74 +++++++++++++++++++ 2 files changed, 77 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc diff --git a/tools/testing/selftests/ftrace/config b/tools/testing/selftests/ftrace/config index b01924c71c09..29588b328345 100644 --- a/tools/testing/selftests/ftrace/config +++ b/tools/testing/selftests/ftrace/config @@ -4,3 +4,6 @@ CONFIG_FUNCTION_PROFILER=y CONFIG_TRACER_SNAPSHOT=y CONFIG_STACK_TRACER=y CONFIG_HIST_TRIGGERS=y +CONFIG_PREEMPT_TRACER=y +CONFIG_IRQSOFF_TRACER=y +CONFIG_TEST_ATOMIC_SECTIONS=m diff --git a/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc b/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc new file mode 100644 index 000000000000..1764ff22c02b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc @@ -0,0 +1,74 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: test for the preemptirqsoff tracer + +MOD=test_atomic_sections + +fail() { + reset_tracer + rmmod $MOD || true + exit_fail +} + +unsup() { #msg + reset_tracer + rmmod $MOD || true + echo $1 + exit_unsupported +} + +modprobe $MOD || unsup "$MOD module not available" +rmmod $MOD + +grep -q "preemptoff" available_tracers || unsup "preemptoff tracer not enabled" +grep -q "irqsoff" available_tracers || unsup "irqsoff tracer not enabled" + +reset_tracer + +# Simulate preemptoff section for half a second couple of times +echo preemptoff > current_tracer +sleep 1 +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail + +cat trace + +# Confirm which tracer +grep -q "tracer: preemptoff" trace || fail + +# Check the end of the section +egrep -q "5.....us : " trace || fail + +# Check for 500ms of latency +egrep -q "latency: 5..... us" trace || fail + +reset_tracer + +# Simulate irqsoff section for half a second couple of times +echo irqsoff > current_tracer +sleep 1 +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail + +cat trace + +# Confirm which tracer +grep -q "tracer: irqsoff" trace || fail + +# Check the end of the section +egrep -q "5.....us : " trace || fail + +# Check for 500ms of latency +egrep -q "latency: 5..... us" trace || fail + +reset_tracer +exit 0 + -- 2.17.0.921.gf22659ad46-goog -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: joelaf@google.com (Joel Fernandes) Date: Tue, 29 May 2018 17:05:00 -0700 Subject: [PATCH v8 8/8] kselftests: Add tests for the preemptoff and irqsoff tracers In-Reply-To: <20180530000500.257225-1-joel@joelfernandes.org> References: <20180530000500.257225-1-joel@joelfernandes.org> Message-ID: <20180530000500.257225-9-joel@joelfernandes.org> Content-Type: text/plain; charset="UTF-8" Message-ID: <20180530000500.Pj13cmtWJZvl2F5wJYWV06C5Ajk2ydvWek-3KAMfSY0@z> From: "Joel Fernandes (Google)" Here we add unit tests for the preemptoff and irqsoff tracer by using a kernel module introduced previously to trigger atomic sections in the kernel. Signed-off-by: Joel Fernandes (Google) --- tools/testing/selftests/ftrace/config | 3 + .../test.d/preemptirq/irqsoff_tracer.tc | 74 +++++++++++++++++++ 2 files changed, 77 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc diff --git a/tools/testing/selftests/ftrace/config b/tools/testing/selftests/ftrace/config index b01924c71c09..29588b328345 100644 --- a/tools/testing/selftests/ftrace/config +++ b/tools/testing/selftests/ftrace/config @@ -4,3 +4,6 @@ CONFIG_FUNCTION_PROFILER=y CONFIG_TRACER_SNAPSHOT=y CONFIG_STACK_TRACER=y CONFIG_HIST_TRIGGERS=y +CONFIG_PREEMPT_TRACER=y +CONFIG_IRQSOFF_TRACER=y +CONFIG_TEST_ATOMIC_SECTIONS=m diff --git a/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc b/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc new file mode 100644 index 000000000000..1764ff22c02b --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/preemptirq/irqsoff_tracer.tc @@ -0,0 +1,74 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: test for the preemptirqsoff tracer + +MOD=test_atomic_sections + +fail() { + reset_tracer + rmmod $MOD || true + exit_fail +} + +unsup() { #msg + reset_tracer + rmmod $MOD || true + echo $1 + exit_unsupported +} + +modprobe $MOD || unsup "$MOD module not available" +rmmod $MOD + +grep -q "preemptoff" available_tracers || unsup "preemptoff tracer not enabled" +grep -q "irqsoff" available_tracers || unsup "irqsoff tracer not enabled" + +reset_tracer + +# Simulate preemptoff section for half a second couple of times +echo preemptoff > current_tracer +sleep 1 +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=preempt atomic_time=500000 || fail +rmmod test_atomic_sections || fail + +cat trace + +# Confirm which tracer +grep -q "tracer: preemptoff" trace || fail + +# Check the end of the section +egrep -q "5.....us : " trace || fail + +# Check for 500ms of latency +egrep -q "latency: 5..... us" trace || fail + +reset_tracer + +# Simulate irqsoff section for half a second couple of times +echo irqsoff > current_tracer +sleep 1 +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail +modprobe test_atomic_sections atomic_mode=irq atomic_time=500000 || fail +rmmod test_atomic_sections || fail + +cat trace + +# Confirm which tracer +grep -q "tracer: irqsoff" trace || fail + +# Check the end of the section +egrep -q "5.....us : " trace || fail + +# Check for 500ms of latency +egrep -q "latency: 5..... us" trace || fail + +reset_tracer +exit 0 + -- 2.17.0.921.gf22659ad46-goog -- To unsubscribe from this list: send the line "unsubscribe linux-kselftest" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html