* Re: [PATCH v2 3/3] mshv: Add debugfs to view hypervisor statistics
[not found] <1764961122-31679-4-git-send-email-nunodasneves@linux.microsoft.com>
@ 2025-12-08 6:02 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-12-08 6:02 UTC (permalink / raw)
To: Nuno Das Neves, linux-hyperv, linux-kernel, skinsburskii
Cc: llvm, oe-kbuild-all, kys, haiyangz, wei.liu, decui, longli,
mhklinux, prapal, mrathor, paekkaladevi, Nuno Das Neves,
Jinank Jain
Hi Nuno,
kernel test robot noticed the following build warnings:
[auto build test WARNING on next-20251205]
[cannot apply to linus/master v6.18 v6.18-rc7 v6.18-rc6 v6.18]
[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#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Nuno-Das-Neves/mshv-Ignore-second-stats-page-map-result-failure/20251206-033756
base: next-20251205
patch link: https://lore.kernel.org/r/1764961122-31679-4-git-send-email-nunodasneves%40linux.microsoft.com
patch subject: [PATCH v2 3/3] mshv: Add debugfs to view hypervisor statistics
config: x86_64-randconfig-076-20251208 (https://download.01.org/0day-ci/archive/20251208/202512081314.ULBIWb1d-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251208/202512081314.ULBIWb1d-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512081314.ULBIWb1d-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/hv/mshv_root_main.c:2369:1: warning: unused label 'destroy_irqds_wq' [-Wunused-label]
2369 | destroy_irqds_wq:
| ^~~~~~~~~~~~~~~~~
1 warning generated.
vim +/destroy_irqds_wq +2369 drivers/hv/mshv_root_main.c
2299
2300 static int __init mshv_parent_partition_init(void)
2301 {
2302 int ret;
2303 struct device *dev;
2304 union hv_hypervisor_version_info version_info;
2305
2306 if (!hv_parent_partition() || is_kdump_kernel())
2307 return -ENODEV;
2308
2309 if (hv_get_hypervisor_version(&version_info))
2310 return -ENODEV;
2311
2312 ret = misc_register(&mshv_dev);
2313 if (ret)
2314 return ret;
2315
2316 dev = mshv_dev.this_device;
2317
2318 if (version_info.build_number < MSHV_HV_MIN_VERSION ||
2319 version_info.build_number > MSHV_HV_MAX_VERSION) {
2320 dev_err(dev, "Running on unvalidated Hyper-V version\n");
2321 dev_err(dev, "Versions: current: %u min: %u max: %u\n",
2322 version_info.build_number, MSHV_HV_MIN_VERSION,
2323 MSHV_HV_MAX_VERSION);
2324 }
2325
2326 mshv_root.synic_pages = alloc_percpu(struct hv_synic_pages);
2327 if (!mshv_root.synic_pages) {
2328 dev_err(dev, "Failed to allocate percpu synic page\n");
2329 ret = -ENOMEM;
2330 goto device_deregister;
2331 }
2332
2333 ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "mshv_synic",
2334 mshv_synic_init,
2335 mshv_synic_cleanup);
2336 if (ret < 0) {
2337 dev_err(dev, "Failed to setup cpu hotplug state: %i\n", ret);
2338 goto free_synic_pages;
2339 }
2340
2341 mshv_cpuhp_online = ret;
2342
2343 ret = mshv_retrieve_scheduler_type(dev);
2344 if (ret)
2345 goto remove_cpu_state;
2346
2347 if (hv_root_partition())
2348 ret = mshv_root_partition_init(dev);
2349 if (ret)
2350 goto remove_cpu_state;
2351
2352 mshv_init_vmm_caps(dev);
2353
2354 ret = mshv_debugfs_init();
2355 if (ret)
2356 goto exit_partition;
2357
2358 ret = mshv_irqfd_wq_init();
2359 if (ret)
2360 goto exit_debugfs;
2361
2362 spin_lock_init(&mshv_root.pt_ht_lock);
2363 hash_init(mshv_root.pt_htable);
2364
2365 hv_setup_mshv_handler(mshv_isr);
2366
2367 return 0;
2368
> 2369 destroy_irqds_wq:
2370 mshv_irqfd_wq_cleanup();
2371 exit_debugfs:
2372 mshv_debugfs_exit();
2373 exit_partition:
2374 if (hv_root_partition())
2375 mshv_root_partition_exit();
2376 remove_cpu_state:
2377 cpuhp_remove_state(mshv_cpuhp_online);
2378 free_synic_pages:
2379 free_percpu(mshv_root.synic_pages);
2380 device_deregister:
2381 misc_deregister(&mshv_dev);
2382 return ret;
2383 }
2384
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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