netdev - linux-next: manual merge of the net-next tree with the kbuild tree

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Date:   Fri, 16 Aug 2019 12:41:43 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     David Miller <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Kees Cook <keescook@...omium.org>,
        Andrii Nakryiko <andriin@...com>,
        Daniel Borkmann <daniel@...earbox.net>
Subject: linux-next: manual merge of the net-next tree with the kbuild tree

Hi all,

Today's linux-next merge of the net-next tree got a conflict in:

  scripts/link-vmlinux.sh

between commit:

  e167191e4a8a ("kbuild: Parameterize kallsyms generation and correct reporting")

from the kbuild tree and commits:

  341dfcf8d78e ("btf: expose BTF info through sysfs")
  7fd785685e22 ("btf: rename /sys/kernel/btf/kernel into /sys/kernel/btf/vmlinux")

from the net-next tree.

I fixed it up (I think - see below) and can carry the fix as necessary.
This is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc scripts/link-vmlinux.sh
index 2438a9faf3f1,c31193340108..000000000000
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@@ -56,11 -56,10 +56,11 @@@ modpost_link(
  }
  
  # Link of vmlinux
- # ${1} - optional extra .o files
- # ${2} - output file
+ # ${1} - output file
+ # ${@:2} - optional extra .o files
  vmlinux_link()
  {
 +	info LD ${2}
  	local lds="${objtree}/${KBUILD_LDS}"
  	local objects
  
@@@ -139,18 -149,6 +150,18 @@@ kallsyms(
  	${CC} ${aflags} -c -o ${2} ${afile}
  }
  
 +# Perform one step in kallsyms generation, including temporary linking of
 +# vmlinux.
 +kallsyms_step()
 +{
 +	kallsymso_prev=${kallsymso}
 +	kallsymso=.tmp_kallsyms${1}.o
 +	kallsyms_vmlinux=.tmp_vmlinux${1}
 +
- 	vmlinux_link "${kallsymso_prev}" ${kallsyms_vmlinux}
++	vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o}
 +	kallsyms ${kallsyms_vmlinux} ${kallsymso}
 +}
 +
  # Create map file with all symbols from ${1}
  # See mksymap for additional details
  mksysmap()
@@@ -228,8 -227,14 +240,15 @@@ ${MAKE} -f "${srctree}/scripts/Makefile
  info MODINFO modules.builtin.modinfo
  ${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo
  
+ btf_vmlinux_bin_o=""
+ if [ -n "${CONFIG_DEBUG_INFO_BTF}" ]; then
+ 	if gen_btf .tmp_vmlinux.btf .btf.vmlinux.bin.o ; then
+ 		btf_vmlinux_bin_o=.btf.vmlinux.bin.o
+ 	fi
+ fi
+ 
  kallsymso=""
 +kallsymso_prev=""
  kallsyms_vmlinux=""
  if [ -n "${CONFIG_KALLSYMS}" ]; then
  
@@@ -268,11 -285,8 +287,7 @@@
  	fi
  fi
  
- vmlinux_link "${kallsymso}" vmlinux
- 
- if [ -n "${CONFIG_DEBUG_INFO_BTF}" ]; then
- 	gen_btf vmlinux
- fi
 -info LD vmlinux
+ vmlinux_link vmlinux "${kallsymso}" "${btf_vmlinux_bin_o}"
  
  if [ -n "${CONFIG_BUILDTIME_EXTABLE_SORT}" ]; then
  	info SORTEX vmlinux

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