On Wed, 1 May 2024 10:36:03 +0800, kernel test robot <lkp@xxxxxxxxx> wrote: > Hi Heng, > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on net-next/main] > > url: https://github.com/intel-lab-lkp/linux/commits/Heng-Qi/linux-dim-move-useful-macros-to-h-file/20240501-013413 > base: net-next/main > patch link: https://lore.kernel.org/r/20240430173136.15807-3-hengqi%40linux.alibaba.com > patch subject: [PATCH net-next v11 2/4] ethtool: provide customized dim profile management > config: openrisc-defconfig (https://download.01.org/0day-ci/archive/20240501/202405011004.Rkw6IrSl-lkp@xxxxxxxxx/config) > compiler: or1k-linux-gcc (GCC) 13.2.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240501/202405011004.Rkw6IrSl-lkp@xxxxxxxxx/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202405011004.Rkw6IrSl-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>): > > net/ethtool/coalesce.c: In function 'ethnl_update_profile': > net/ethtool/coalesce.c:453:46: error: 'struct net_device' has no member named 'irq_moder' > 453 | struct dim_irq_moder *irq_moder = dev->irq_moder; > | ^~ > net/ethtool/coalesce.c: At top level: > >> net/ethtool/coalesce.c:446:12: warning: 'ethnl_update_profile' defined but not used [-Wunused-function] > 446 | static int ethnl_update_profile(struct net_device *dev, > | ^~~~~~~~~~~~~~~~~~~~ > >> net/ethtool/coalesce.c:151:12: warning: 'coalesce_put_profile' defined but not used [-Wunused-function] > 151 | static int coalesce_put_profile(struct sk_buff *skb, u16 attr_type, > | ^~~~~~~~~~~~~~~~~~~~ > This is a known minor issue, to reduce the use of 'IS_ENABLED(CONFIG_DIMLIB)' mentioned in v10. Since the calls of ethnl_update_profile() and coalesce_put_profile() will only occur when IS_ENABLED(CONFIG_DIMLIB) returns true, the robot's warning can be ignored the code is safe. All NIPA test cases running on my local pass successfully on V11. Alternatively, I remake the series to have IS_ENABLED(CONFIG_DIMLIB) back, up to Kuba (and others). :) Thanks. > > vim +/ethnl_update_profile +446 net/ethtool/coalesce.c > > 424 > 425 /** > 426 * ethnl_update_profile - get a profile nest with child nests from userspace. > 427 * @dev: netdevice to update the profile > 428 * @dst: profile get from the driver and modified by ethnl_update_profile. > 429 * @nests: nest attr ETHTOOL_A_COALESCE_*X_PROFILE to set profile. > 430 * @extack: Netlink extended ack > 431 * > 432 * Layout of nests: > 433 * Nested ETHTOOL_A_COALESCE_*X_PROFILE attr > 434 * Nested ETHTOOL_A_PROFILE_IRQ_MODERATION attr > 435 * ETHTOOL_A_IRQ_MODERATION_USEC attr > 436 * ETHTOOL_A_IRQ_MODERATION_PKTS attr > 437 * ETHTOOL_A_IRQ_MODERATION_COMPS attr > 438 * ... > 439 * Nested ETHTOOL_A_PROFILE_IRQ_MODERATION attr > 440 * ETHTOOL_A_IRQ_MODERATION_USEC attr > 441 * ETHTOOL_A_IRQ_MODERATION_PKTS attr > 442 * ETHTOOL_A_IRQ_MODERATION_COMPS attr > 443 * > 444 * Return: 0 on success or a negative error code. > 445 */ > > 446 static int ethnl_update_profile(struct net_device *dev, > 447 struct dim_cq_moder __rcu **dst, > 448 const struct nlattr *nests, > 449 struct netlink_ext_ack *extack) > 450 { > 451 int len_irq_moder = ARRAY_SIZE(coalesce_irq_moderation_policy); > 452 struct nlattr *tb[ARRAY_SIZE(coalesce_irq_moderation_policy)]; > > 453 struct dim_irq_moder *irq_moder = dev->irq_moder; > 454 struct dim_cq_moder *new_profile, *old_profile; > 455 int ret, rem, i = 0, len; > 456 struct nlattr *nest; > 457 > 458 if (!nests) > 459 return 0; > 460 > 461 if (!*dst) > 462 return -EOPNOTSUPP; > 463 > 464 old_profile = rtnl_dereference(*dst); > 465 len = NET_DIM_PARAMS_NUM_PROFILES * sizeof(*old_profile); > 466 new_profile = kmemdup(old_profile, len, GFP_KERNEL); > 467 if (!new_profile) > 468 return -ENOMEM; > 469 > 470 nla_for_each_nested_type(nest, ETHTOOL_A_PROFILE_IRQ_MODERATION, > 471 nests, rem) { > 472 ret = nla_parse_nested(tb, len_irq_moder - 1, nest, > 473 coalesce_irq_moderation_policy, > 474 extack); > 475 if (ret) > 476 goto err_out; > 477 > 478 ret = ethnl_update_irq_moder(irq_moder, &new_profile[i].usec, > 479 ETHTOOL_A_IRQ_MODERATION_USEC, > 480 tb, DIM_COALESCE_USEC, > 481 extack); > 482 if (ret) > 483 goto err_out; > 484 > 485 ret = ethnl_update_irq_moder(irq_moder, &new_profile[i].pkts, > 486 ETHTOOL_A_IRQ_MODERATION_PKTS, > 487 tb, DIM_COALESCE_PKTS, > 488 extack); > 489 if (ret) > 490 goto err_out; > 491 > 492 ret = ethnl_update_irq_moder(irq_moder, &new_profile[i].comps, > 493 ETHTOOL_A_IRQ_MODERATION_COMPS, > 494 tb, DIM_COALESCE_COMPS, > 495 extack); > 496 if (ret) > 497 goto err_out; > 498 > 499 i++; > 500 } > 501 > 502 rcu_assign_pointer(*dst, new_profile); > 503 kfree_rcu(old_profile, rcu); > 504 > 505 return 0; > 506 > 507 err_out: > 508 kfree(new_profile); > 509 return ret; > 510 } > 511 > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
