Hi Yuchung, [auto build test ERROR on net-next/master]
url: https://github.com/0day-ci/linux/commits/Yuchung-Cheng/tcp-fix-cwnd-undo-in-Reno-and-HTCP-congestion-controls/20170804-085255 config: xtensa-allmodconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 4.9.0 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=xtensa All errors (new ones prefixed by >>): net/ipv4/tcp_cdg.c: In function 'tcp_cdg_backoff': >> net/ipv4/tcp_cdg.c:256:2: error: too many arguments to function >> 'tcp_enter_cwr' tcp_enter_cwr(sk, true); ^ In file included from net/ipv4/tcp_cdg.c:32:0: include/net/tcp.h:1149:6: note: declared here void tcp_enter_cwr(struct sock *sk); ^ -- net/ipv4/tcp_nv.c: In function 'tcpnv_recalc_ssthresh': net/ipv4/tcp_nv.c:178:16: warning: unused variable 'ca' [-Wunused-variable] struct tcpnv *ca = inet_csk_ca(sk); ^ net/ipv4/tcp_nv.c: At top level: >> net/ipv4/tcp_nv.c:439:15: error: 'tcpnv_reno_undo_cwnd' undeclared here (not >> in a function) .undo_cwnd = tcpnv_reno_undo_cwnd, ^ vim +/tcp_enter_cwr +256 net/ipv4/tcp_cdg.c 239 240 static bool tcp_cdg_backoff(struct sock *sk, u32 grad) 241 { 242 struct cdg *ca = inet_csk_ca(sk); 243 struct tcp_sock *tp = tcp_sk(sk); 244 245 if (prandom_u32() <= nexp_u32(grad * backoff_factor)) 246 return false; 247 248 if (use_ineff) { 249 ca->backoff_cnt++; 250 if (ca->backoff_cnt > use_ineff) 251 return false; 252 } 253 254 ca->shadow_wnd = max(ca->shadow_wnd, tp->snd_cwnd); 255 ca->state = CDG_BACKOFF; > 256 tcp_enter_cwr(sk, true); 257 return true; 258 } 259 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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