On Sun, May 21, 2017 at 9:16 PM, Stephen Rothwell [off-list ref] wrote:

Hi all,

After merging the net-next tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

net/socket.c: In function 'put_ts_pktinfo':
net/socket.c:695:28: error: 'SCM_TIMESTAMPING_PKTINFO' undeclared (first use in this function)
  put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPING_PKTINFO,
                            ^

Caused by commit

  aad9c8c470f2 ("net: add new control message for incoming HW-timestamped packets")

This probably broke every architecture that has its own
arch/<arch>/include/uapi/asm/socket.h that does not include
include/uapi/asm-generic/socket.h :-(

Indeed. I added the architecture specific versions in patch

  http://patchwork.ozlabs.org/patch/765238/

That fixes the powerpc build for me. The new option is now
defined in every file that also defines the last added such
option SCM_TIMESTAMPING_OPT_STATS. Apologies for
missing this earlier.