From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2FBFC4CECD for ; Tue, 17 Sep 2019 16:05:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BCE81214AF for ; Tue, 17 Sep 2019 16:05:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728054AbfIQQFi (ORCPT ); Tue, 17 Sep 2019 12:05:38 -0400 Received: from foss.arm.com ([217.140.110.172]:58082 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727865AbfIQQFi (ORCPT ); Tue, 17 Sep 2019 12:05:38 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 88D2515A2; Tue, 17 Sep 2019 09:05:37 -0700 (PDT) Received: from arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A04B03F575; Tue, 17 Sep 2019 09:05:36 -0700 (PDT) Date: Tue, 17 Sep 2019 17:05:34 +0100 From: Dave Martin To: Cristian Marussi Cc: linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, shuah@kernel.org, amit.kachhap@arm.com, andreyknvl@google.com Subject: Re: [PATCH v6 01/11] kselftest: arm64: extend toplevel skeleton Makefile Message-ID: <20190917160534.GK27757@arm.com> References: <20190910123111.33478-1-cristian.marussi@arm.com> <20190910123111.33478-2-cristian.marussi@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190910123111.33478-2-cristian.marussi@arm.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On Tue, Sep 10, 2019 at 01:31:01pm +0100, Cristian Marussi wrote: > Modify KSFT arm64 toplevel Makefile to maintain arm64 kselftests organized > by subsystem, keeping them into distinct subdirectories under arm64 custom > KSFT directory: tools/testing/selftests/arm64/ > > Add to such toplevel Makefile a mechanism to guess the effective location > of Kernel headers as installed by KSFT framework. > > Fit existing arm64 tags kselftest into this new schema moving them into > their own subdirectory (arm64/tags). > > Signed-off-by: Cristian Marussi > --- > Based on: > commit 9ce1263033cd ("selftests, arm64: add a selftest for passing > tagged pointers to kernel") > --- > v5 --> v6 > - using realpath to avoid passing down relative paths > - fix commit msg & Copyright > - removed unneded Makefile export > - added SUBTARGETS specification, to allow building specific only some > arm64 test subsystems > v4 --> v5 > - rebased on arm64/for-next/core > - merged this patch with KSFT arm64 tags patch, while moving the latter > into its own subdir > - moved kernel header includes search mechanism from KSFT arm64 > SIGNAL Makefile > - export proper top_srcdir ENV for lib.mk > v3 --> v4 > - comment reword > - simplified documentation in README > - dropped README about standalone > --- > tools/testing/selftests/Makefile | 1 + > tools/testing/selftests/arm64/Makefile | 63 +++++++++++++++++-- > tools/testing/selftests/arm64/README | 25 ++++++++ > tools/testing/selftests/arm64/tags/Makefile | 6 ++ > .../arm64/{ => tags}/run_tags_test.sh | 0 > .../selftests/arm64/{ => tags}/tags_test.c | 0 > 6 files changed, 91 insertions(+), 4 deletions(-) > create mode 100644 tools/testing/selftests/arm64/README > create mode 100644 tools/testing/selftests/arm64/tags/Makefile > rename tools/testing/selftests/arm64/{ => tags}/run_tags_test.sh (100%) > rename tools/testing/selftests/arm64/{ => tags}/tags_test.c (100%) > > diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile > index 25b43a8c2b15..1722dae9381a 100644 > --- a/tools/testing/selftests/Makefile > +++ b/tools/testing/selftests/Makefile > @@ -1,5 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0 > TARGETS = android > +TARGETS += arm64 > TARGETS += bpf > TARGETS += breakpoints > TARGETS += capabilities > diff --git a/tools/testing/selftests/arm64/Makefile b/tools/testing/selftests/arm64/Makefile > index a61b2e743e99..cbb2a5a9e3fc 100644 > --- a/tools/testing/selftests/arm64/Makefile > +++ b/tools/testing/selftests/arm64/Makefile > @@ -1,11 +1,66 @@ > # SPDX-License-Identifier: GPL-2.0 > > -# ARCH can be overridden by the user for cross compiling > +# When ARCH not overridden for crosscompiling, lookup machine > ARCH ?= $(shell uname -m 2>/dev/null || echo not) > > ifneq (,$(filter $(ARCH),aarch64 arm64)) > -TEST_GEN_PROGS := tags_test > -TEST_PROGS := run_tags_test.sh > +SUBTARGETS ?= tags > +else > +SUBTARGETS := > endif > > -include ../lib.mk > +CFLAGS := -Wall -O2 -g > + > +# A proper top_srcdir is needed by KSFT(lib.mk) > +top_srcdir = $(realpath ../../../../) > + > +# Additional include paths needed by kselftest.h and local headers > +CFLAGS += -I$(top_srcdir)/tools/testing/selftests/ > + > +# Guessing where the Kernel headers could have been installed > +# depending on ENV config > +ifeq ($(KBUILD_OUTPUT),) > +khdr_dir = $(top_srcdir)/usr/include > +else > +# the KSFT preferred location when KBUILD_OUTPUT is set > +khdr_dir = $(KBUILD_OUTPUT)/kselftest/usr/include > +endif I still tend to think that for now we should just do what all the other tests do. Most tests use CFLAGS += -I../../../../usr/include/ in their Makefiles. For us, the test Makefiles are nested one level deeper, so I guess we would put CFLAGS += -I../../../../../usr/include/ in each. This will break in some cases, but only in the same cases where kselftest is already broken. Ideally we would fix this globally, but can that instead be done independently of this series? Fixing only arm64, by pasting some arbitrary logic from selftests/Makefile doesn't seem like a future-proof approach. Or did I miss something? > + > +CFLAGS += -I$(khdr_dir) > + > +export CFLAGS > +export top_srcdir > + > +all: > + @for DIR in $(SUBTARGETS); do \ > + BUILD_TARGET=$(OUTPUT)/$$DIR; \ > + mkdir -p $$BUILD_TARGET; \ > + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \ > + done > + > +install: all > + @for DIR in $(SUBTARGETS); do \ > + BUILD_TARGET=$(OUTPUT)/$$DIR; \ > + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \ > + done > + > +run_tests: all > + @for DIR in $(SUBTARGETS); do \ > + BUILD_TARGET=$(OUTPUT)/$$DIR; \ > + make OUTPUT=$$BUILD_TARGET -C $$DIR $@; \ > + done > + > +# Avoid any output on non arm64 on emit_tests This comment can be dropped: the whole file does nothing for non-arm64, and it achieves it in the same way as other arch-specific Makefiles, so it's odd to have the comment here specifically (?) With or without the above changes, I'm happy to give Reviewed-by: Dave Martin (but Shuah or someone will need to give a view on how this integrates with kselftest overall). [...] Cheers ---Dave