From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f196.google.com (mail-pg1-f196.google.com [209.85.215.196]) by mx.groups.io with SMTP id smtpd.web12.40421.1605556238553551618 for ; Mon, 16 Nov 2020 11:50:38 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@broadcom.com header.s=google header.b=Ldv5YDXl; spf=permerror, err=parse error for token &{10 18 %{i}._ip.%{h}._ehlo.%{d}._spf.vali.email}: invalid domain name (domain: broadcom.com, ip: 209.85.215.196, mailfrom: scott.branden@broadcom.com) Received: by mail-pg1-f196.google.com with SMTP id e21so14139855pgr.11 for ; Mon, 16 Nov 2020 11:50:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to; bh=IthsezM0SWSUyisZrRvENlZaHjWc5fOC+J2Oja/Dgbg=; b=Ldv5YDXloE9x13PLiUjskVw20WiFpyKhf3lRBJ/+IcXlh0KViHbHfQr8xp2cy0323W 4H/nNU1tdeK0wJuiry9q6TcmK+YVQdZjPhiVxjrXANcEr+QOoTC52qvbCCubQrbJRCxk h3pU9QzOnxtQLHcyY6uEIkNduceFyu+kbI0Is= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to; bh=IthsezM0SWSUyisZrRvENlZaHjWc5fOC+J2Oja/Dgbg=; b=Rc+xePqtPgyQPcXeE24fYAZf1nrY9IIQaJRZ6Dv1AWZVXa1Xi9tF13tSkbbrwlTHcV k8Yas0De+sGyyWQ4Dq9D+sG/qsPt08Q8d945uK0T0IfYGiBuOMmiWzSgqMz9uoYT31+l GtIX7g5W7zqspov5tgrUUBqh/eK++O248Le9RT9AuCPi1l6QuJQt+ixes8NuAiXX2tgi 4Xg931J24+p+E2owex5r51FFktcFhNi9C4g5CmTCxY5h6EFbjg3E4dezrOpB/YmPh3cp 1bgxUMPbGba6737IJ7qbsedu7ly0wunqQRInkN0joYB8ew5oFbgenPe29qHBLuPpNDkX jS/Q== X-Gm-Message-State: AOAM532OMqxL1ItXju7PkKC1HGZ11akK5MzJ302zOqIqdBJkKJFpSqqj LBELJrwli9Q2CkY/KwSYvcX5UldqpxXIblD04aw5GrBSzfC/BdLfNV0fTS6wri2ZG2uA4+e/SMj ePAvXgtDQoq6Y4UHE9VpwG55nFGTFTRW1TQQFqQrumflMb9xf50hmX9Q1n1scUPs0Pko86XWg/E 7UYG6une7W0nI/4SGS4JKHSvSvzQ8= X-Google-Smtp-Source: ABdhPJx4sGeCkGUd1vC/7iiECczySGJd9fGu8F//s+51wiwLV5+D02odZg20uTMJ9NhPpLS02K9i3A== X-Received: by 2002:a17:90a:678a:: with SMTP id o10mr539849pjj.180.1605556237603; Mon, 16 Nov 2020 11:50:37 -0800 (PST) Return-Path: Received: from [10.136.13.65] ([192.19.228.250]) by smtp.gmail.com with ESMTPSA id 3sm10351355pfg.41.2020.11.16.11.50.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Nov 2020 11:50:37 -0800 (PST) Subject: Re: [OE-core] [PATCH v2] kernel: provide module.lds for out of tree builds in v5.10+ To: Bruce Ashfield , richard.purdie@linuxfoundation.org Cc: lili.li@intel.com, openembedded-core@lists.openembedded.org References: <20201114052701.8880-1-bruce.ashfield@gmail.com> From: "Scott Branden" Message-ID: <60863a39-ee36-9bbc-cb5f-ccce0a0d1e45@broadcom.com> Date: Mon, 16 Nov 2020 11:50:35 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201114052701.8880-1-bruce.ashfield@gmail.com> X-Groupsio-MsgNum: 144668 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000003bdf3205b43eb107" --0000000000003bdf3205b43eb107 Content-Type: multipart/alternative; boundary="------------5205D964FCCC88E5AD1B428E" Content-Language: en-CA --------------5205D964FCCC88E5AD1B428E Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit This version works better for me. On 2020-11-13 9:27 p.m., Bruce Ashfield wrote: > From: Bruce Ashfield > > The upstream commit 596b0474d3d [kbuild: preprocess module linker > script], adds a dependency on module.lds for external module > building. > > Since module.lds is generated as part of 'modules_prepare', we > must make it available with the other kernel artifacts in the > kernel shared workdir, otherwise out of tree builds fail. > > This fixes errors like: > > | make[4]: *** No rule to make target 'scripts/module.lds', needed by > 'build/tmp/work/qemuarm64-poky-linux/cryptodev-module/1.11-r0/git/cryptodev.ko'. > Stop. > | make[4]: *** Waiting for unfinished jobs.... > > We also ensure that kernel-devsrc has a copy to support on > target module builds that are often prepared with 'make scripts > prepare'. Those targets won't regenerate it, so the build fails. > If 'make modules_prepare' is used, the file will be regenerated > and overwrite our copy (as expected). > > Signed-off-by: Pan, Kris > Signed-off-by: Lili Li > Signed-off-by: Bruce Ashfield Tested-by: Scott Branden > --- > > v2: > - I was right that we really only should be copying this in one > location, but it wasn't clear that the main kernel build no > longer runs modules_prepare so the do_shared_workdir task will > *never* fine module.lds on a clean run. > > So we just need the single copy after we've build our modules > to ensure that the file is available. > > Tested against a clean kernel and module build, just building > the module. Dependencies are correct and the file is copied > for the module to build. > > We could do the same thing for Module.symvers, but historically > it was generated during the main kernel build .. so we can leave > it there for old kernel support. > > > meta/classes/kernel.bbclass | 1 + > meta/recipes-kernel/linux/kernel-devsrc.bb | 6 ++++++ > 2 files changed, 7 insertions(+) > > diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass > index be93a258f6..af4c891de4 100644 > --- a/meta/classes/kernel.bbclass > +++ b/meta/classes/kernel.bbclass > @@ -391,6 +391,7 @@ do_compile_kernelmodules() { > # other kernel modules and will look at this > # file to do symbol lookups > cp ${B}/Module.symvers ${STAGING_KERNEL_BUILDDIR}/ > + [ -e ${B}/scripts/module.lds ] && install -Dm 0644 ${B}/scripts/module.lds ${STAGING_KERNEL_BUILDDIR}/scripts/module.lds > else > bbnote "no modules to compile" > fi > diff --git a/meta/recipes-kernel/linux/kernel-devsrc.bb b/meta/recipes-kernel/linux/kernel-devsrc.bb > index 81b1e36041..5f0dedbdf7 100644 > --- a/meta/recipes-kernel/linux/kernel-devsrc.bb > +++ b/meta/recipes-kernel/linux/kernel-devsrc.bb > @@ -100,6 +100,12 @@ do_install() { > # be dealt with. > # cp -a scripts $kerneldir/build > > + # although module.lds can be regenerated on target via 'make modules_prepare' > + # there are several places where 'makes scripts prepare' is done, and that won't > + # regenerate the file. So we copy it onto the target as a migration to using > + # modules_prepare > + cp -a --parents scripts/module.lds $kerneldir/build/ 2>/dev/null || : > + > if [ -d arch/${ARCH}/scripts ]; then > cp -a arch/${ARCH}/scripts $kerneldir/build/arch/${ARCH} > fi > > > --------------5205D964FCCC88E5AD1B428E Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit This version works better for me.

On 2020-11-13 9:27 p.m., Bruce Ashfield wrote:
From: Bruce Ashfield <bruce.ashfield@gmail.com>

The upstream commit 596b0474d3d [kbuild: preprocess module linker
script], adds a dependency on module.lds for external module
building.

Since module.lds is generated as part of 'modules_prepare', we
must make it available with the other kernel artifacts in the
kernel shared workdir, otherwise out of tree builds fail.

This fixes errors like:

    | make[4]: *** No rule to make target 'scripts/module.lds', needed by
        'build/tmp/work/qemuarm64-poky-linux/cryptodev-module/1.11-r0/git/cryptodev.ko'.
        Stop.
    | make[4]: *** Waiting for unfinished jobs....

We also ensure that kernel-devsrc has a copy to support on
target module builds that are often prepared with 'make scripts
prepare'. Those targets won't regenerate it, so the build fails.
If 'make modules_prepare' is used, the file will be regenerated
and overwrite our copy (as expected).

Signed-off-by: Pan, Kris <kris.pan@intel.com>
Signed-off-by: Lili Li <lili.li@intel.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Tested-by: Scott Branden <scott.branden@broadcom.com>
---

v2:
  - I was right that we really only should be copying this in one
    location, but it wasn't clear that the main kernel build no
    longer runs modules_prepare so the do_shared_workdir task will
    *never* fine module.lds on a clean run.

    So we just need the single copy after we've build our modules
    to ensure that the file is available.

    Tested against a clean kernel and module build, just building
    the module. Dependencies are correct and the file is copied
    for the module to build.

    We could do the same thing for Module.symvers, but historically
    it was generated during the main kernel build .. so we can leave
    it there for old kernel support.


 meta/classes/kernel.bbclass                | 1 +
 meta/recipes-kernel/linux/kernel-devsrc.bb | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index be93a258f6..af4c891de4 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -391,6 +391,7 @@ do_compile_kernelmodules() {
 		# other kernel modules and will look at this
 		# file to do symbol lookups
 		cp ${B}/Module.symvers ${STAGING_KERNEL_BUILDDIR}/
+		[ -e ${B}/scripts/module.lds ] && install -Dm 0644 ${B}/scripts/module.lds ${STAGING_KERNEL_BUILDDIR}/scripts/module.lds
 	else
 		bbnote "no modules to compile"
 	fi
diff --git a/meta/recipes-kernel/linux/kernel-devsrc.bb b/meta/recipes-kernel/linux/kernel-devsrc.bb
index 81b1e36041..5f0dedbdf7 100644
--- a/meta/recipes-kernel/linux/kernel-devsrc.bb
+++ b/meta/recipes-kernel/linux/kernel-devsrc.bb
@@ -100,6 +100,12 @@ do_install() {
 	# be dealt with.
 	# cp -a scripts $kerneldir/build
 
+	# although module.lds can be regenerated on target via 'make modules_prepare'
+	# there are several places where 'makes scripts prepare' is done, and that won't
+	# regenerate the file. So we copy it onto the target as a migration to using
+	# modules_prepare
+	cp -a --parents scripts/module.lds $kerneldir/build/ 2>/dev/null || :
+
         if [ -d arch/${ARCH}/scripts ]; then
 	    cp -a arch/${ARCH}/scripts $kerneldir/build/arch/${ARCH}
 	fi

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