Hi, [auto build test ERROR on tip/irq/core] [also build test ERROR on v4.7-rc3 next-20160615] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Paolo-Abeni/genirq-threadable-IRQ-support/20160615-214836 config: cris-etrax-100lx_v2_defconfig (attached as .config) compiler: cris-linux-gcc (GCC) 4.6.3 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=cris All error/warnings (new ones prefixed by >>): >> net/core/dev.c:3457:5: warning: "CONFIG_IRQ_FORCED_THREADING" is not defined >> [-Wundef] net/core/dev.c: In function '____napi_schedule': >> net/core/dev.c:3516:3: error: implicit declaration of function >> 'napi_threaded_poll' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors vim +/napi_threaded_poll +3516 net/core/dev.c 3451 EXPORT_SYMBOL(netdev_max_backlog); 3452 3453 int netdev_tstamp_prequeue __read_mostly = 1; 3454 int netdev_budget __read_mostly = 300; 3455 int weight_p __read_mostly = 64; /* old backlog weight */ 3456 > 3457 #if CONFIG_IRQ_FORCED_THREADING 3458 static int napi_poll(struct napi_struct *n, struct list_head *repoll); 3459 3460 static void napi_threaded_poll(struct napi_struct *napi) 3461 { 3462 unsigned long time_limit = jiffies + 2; 3463 struct list_head dummy_repoll; 3464 int budget = netdev_budget; 3465 bool again = true; 3466 3467 if (test_and_set_bit(NAPI_STATE_SCHED_THREAD, &napi->state)) 3468 return; 3469 3470 local_irq_enable(); 3471 INIT_LIST_HEAD(&dummy_repoll); 3472 3473 while (again) { 3474 /* ensure that the poll list is not empty */ 3475 if (list_empty(&dummy_repoll)) 3476 list_add(&napi->poll_list, &dummy_repoll); 3477 3478 budget -= napi_poll(napi, &dummy_repoll); 3479 3480 if (napi_disable_pending(napi)) 3481 again = false; 3482 else if (!test_bit(NAPI_STATE_SCHED, &napi->state)) 3483 again = false; 3484 else if (kthread_should_stop()) 3485 again = false; 3486 3487 if (!again || unlikely(budget <= 0 || 3488 time_after_eq(jiffies, time_limit))) { 3489 /* no need to reschedule if we are going to stop */ 3490 if (again) 3491 cond_resched_softirq(); 3492 time_limit = jiffies + 2; 3493 budget = netdev_budget; 3494 rcu_bh_qs(); 3495 __kfree_skb_flush(); 3496 } 3497 } 3498 3499 clear_bit(NAPI_STATE_SCHED_THREAD, &napi->state); 3500 local_irq_disable(); 3501 } 3502 3503 static inline bool napi_is_threaded(struct napi_struct *napi) 3504 { 3505 return current == napi->thread; 3506 } 3507 #else 3508 #define napi_is_threaded(napi) 0 3509 #endif 3510 3511 /* Called with irq disabled */ 3512 static inline void ____napi_schedule(struct softnet_data *sd, 3513 struct napi_struct *napi) 3514 { 3515 if (napi_is_threaded(napi)) { > 3516 napi_threaded_poll(napi); 3517 return; 3518 } 3519 list_add_tail(&napi->poll_list, &sd->poll_list); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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