1:36 p.m.
Hi Arjun,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on net-next/master]
url:
https://github.com/0day-ci/linux/commits/Arjun-Roy/Perf-optimizations-for...
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
e545f86573937142b8a90bd65d476b9f001088cf
config: nds32-defconfig (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
#
https://github.com/0day-ci/linux/commit/5c20c7c34817692f87427a655374172f6...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Arjun-Roy/Perf-optimizations-for-TCP-Recv-Zerocopy/20201113-030506
git checkout 5c20c7c34817692f87427a655374172f6666d8ed
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nds32
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
net/ipv4/tcp.c: In function 'tcp_copy_straggler_data':
> net/ipv4/tcp.c:1754:34: warning: cast to pointer from integer of
different size [-Wint-to-pointer-cast]
1754 | err = import_single_range(READ,
(void __user *)zc->copybuf_address,
| ^
vim +1754 net/ipv4/tcp.c
1745
1746 static int tcp_copy_straggler_data(struct tcp_zerocopy_receive *zc,
1747 struct sk_buff *skb, u32 copylen,
1748 u32 *offset, u32 *seq)
1749 {
1750 struct msghdr msg = {};
1751 struct iovec iov;
1752 int err;
1753
1754 err = import_single_range(READ, (void __user
*)zc->copybuf_address,
1755 copylen, &iov, &msg.msg_iter);
1756 if (err)
1757 return err;
1758 err = skb_copy_datagram_msg(skb, *offset, &msg, copylen);
1759 if (err)
1760 return err;
1761 zc->recv_skip_hint -= copylen;
1762 *offset += copylen;
1763 *seq += copylen;
1764 return (__s32)copylen;
1765 }
1766
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org