Hi Andrey, I love your patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on vhost/linux-next hnaz-linux-mm/master linus/master v5.9-rc8 next-20201009] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Andrey-Konovalov/kcov-usb-vhost-specify-contexts-for-remote-coverage-sections/20201009-205923 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: x86_64-rhel (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/669e3ded7b025bc4f34c158e66974ff11f452a88 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Andrey-Konovalov/kcov-usb-vhost-specify-contexts-for-remote-coverage-sections/20201009-205923 git checkout 669e3ded7b025bc4f34c158e66974ff11f452a88 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/usb/core/hub.c: In function 'hub_event': >> drivers/usb/core/hub.c:5526:48: error: 'KCOV_CONTEXT_TASK' undeclared (first use in this function) 5526 | kcov_remote_start_usb((u64)hdev->bus->busnum, KCOV_CONTEXT_TASK); | ^~~~~~~~~~~~~~~~~ drivers/usb/core/hub.c:5526:48: note: each undeclared identifier is reported only once for each function it appears in -- drivers/usb/core/hcd.c: In function '__usb_hcd_giveback_urb': >> drivers/usb/core/hcd.c:1649:52: error: 'KCOV_CONTEXT_SOFTIRQ' undeclared (first use in this function) 1649 | kcov_remote_start_usb((u64)urb->dev->bus->busnum, KCOV_CONTEXT_SOFTIRQ); | ^~~~~~~~~~~~~~~~~~~~ drivers/usb/core/hcd.c:1649:52: note: each undeclared identifier is reported only once for each function it appears in -- drivers/vhost/vhost.c: In function 'vhost_worker': >> drivers/vhost/vhost.c:367:8: error: 'KCOV_CONTEXT_TASK' undeclared (first use in this function) 367 | KCOV_CONTEXT_TASK); | ^~~~~~~~~~~~~~~~~ drivers/vhost/vhost.c:367:8: note: each undeclared identifier is reported only once for each function it appears in vim +/KCOV_CONTEXT_TASK +5526 drivers/usb/core/hub.c 5510 5511 static void hub_event(struct work_struct *work) 5512 { 5513 struct usb_device *hdev; 5514 struct usb_interface *intf; 5515 struct usb_hub *hub; 5516 struct device *hub_dev; 5517 u16 hubstatus; 5518 u16 hubchange; 5519 int i, ret; 5520 5521 hub = container_of(work, struct usb_hub, events); 5522 hdev = hub->hdev; 5523 hub_dev = hub->intfdev; 5524 intf = to_usb_interface(hub_dev); 5525 > 5526 kcov_remote_start_usb((u64)hdev->bus->busnum, KCOV_CONTEXT_TASK); 5527 5528 dev_dbg(hub_dev, "state %d ports %d chg %04x evt %04x\n", 5529 hdev->state, hdev->maxchild, 5530 /* NOTE: expects max 15 ports... */ 5531 (u16) hub->change_bits[0], 5532 (u16) hub->event_bits[0]); 5533 5534 /* Lock the device, then check to see if we were 5535 * disconnected while waiting for the lock to succeed. */ 5536 usb_lock_device(hdev); 5537 if (unlikely(hub->disconnected)) 5538 goto out_hdev_lock; 5539 5540 /* If the hub has died, clean up after it */ 5541 if (hdev->state == USB_STATE_NOTATTACHED) { 5542 hub->error = -ENODEV; 5543 hub_quiesce(hub, HUB_DISCONNECT); 5544 goto out_hdev_lock; 5545 } 5546 5547 /* Autoresume */ 5548 ret = usb_autopm_get_interface(intf); 5549 if (ret) { 5550 dev_dbg(hub_dev, "Can't autoresume: %d\n", ret); 5551 goto out_hdev_lock; 5552 } 5553 5554 /* If this is an inactive hub, do nothing */ 5555 if (hub->quiescing) 5556 goto out_autopm; 5557 5558 if (hub->error) { 5559 dev_dbg(hub_dev, "resetting for error %d\n", hub->error); 5560 5561 ret = usb_reset_device(hdev); 5562 if (ret) { 5563 dev_dbg(hub_dev, "error resetting hub: %d\n", ret); 5564 goto out_autopm; 5565 } 5566 5567 hub->nerrors = 0; 5568 hub->error = 0; 5569 } 5570 5571 /* deal with port status changes */ 5572 for (i = 1; i <= hdev->maxchild; i++) { 5573 struct usb_port *port_dev = hub->ports[i - 1]; 5574 5575 if (test_bit(i, hub->event_bits) 5576 || test_bit(i, hub->change_bits) 5577 || test_bit(i, hub->wakeup_bits)) { 5578 /* 5579 * The get_noresume and barrier ensure that if 5580 * the port was in the process of resuming, we 5581 * flush that work and keep the port active for 5582 * the duration of the port_event(). However, 5583 * if the port is runtime pm suspended 5584 * (powered-off), we leave it in that state, run 5585 * an abbreviated port_event(), and move on. 5586 */ 5587 pm_runtime_get_noresume(&port_dev->dev); 5588 pm_runtime_barrier(&port_dev->dev); 5589 usb_lock_port(port_dev); 5590 port_event(hub, i); 5591 usb_unlock_port(port_dev); 5592 pm_runtime_put_sync(&port_dev->dev); 5593 } 5594 } 5595 5596 /* deal with hub status changes */ 5597 if (test_and_clear_bit(0, hub->event_bits) == 0) 5598 ; /* do nothing */ 5599 else if (hub_hub_status(hub, &hubstatus, &hubchange) < 0) 5600 dev_err(hub_dev, "get_hub_status failed\n"); 5601 else { 5602 if (hubchange & HUB_CHANGE_LOCAL_POWER) { 5603 dev_dbg(hub_dev, "power change\n"); 5604 clear_hub_feature(hdev, C_HUB_LOCAL_POWER); 5605 if (hubstatus & HUB_STATUS_LOCAL_POWER) 5606 /* FIXME: Is this always true? */ 5607 hub->limited_power = 1; 5608 else 5609 hub->limited_power = 0; 5610 } 5611 if (hubchange & HUB_CHANGE_OVERCURRENT) { 5612 u16 status = 0; 5613 u16 unused; 5614 5615 dev_dbg(hub_dev, "over-current change\n"); 5616 clear_hub_feature(hdev, C_HUB_OVER_CURRENT); 5617 msleep(500); /* Cool down */ 5618 hub_power_on(hub, true); 5619 hub_hub_status(hub, &status, &unused); 5620 if (status & HUB_STATUS_OVERCURRENT) 5621 dev_err(hub_dev, "over-current condition\n"); 5622 } 5623 } 5624 5625 out_autopm: 5626 /* Balance the usb_autopm_get_interface() above */ 5627 usb_autopm_put_interface_no_suspend(intf); 5628 out_hdev_lock: 5629 usb_unlock_device(hdev); 5630 5631 /* Balance the stuff in kick_hub_wq() and allow autosuspend */ 5632 usb_autopm_put_interface(intf); 5633 kref_put(&hub->kref, hub_release); 5634 5635 kcov_remote_stop(KCOV_CONTEXT_TASK); 5636 } 5637 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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