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Message-ID: <202601280830.2IJaaITg-lkp@intel.com>
Date: Wed, 28 Jan 2026 08:40:26 +0800
From: kernel test robot <lkp@...el.com>
To: Besar Wicaksono <bwicaksono@...dia.com>, will@...nel.org,
suzuki.poulose@....com, robin.murphy@....com,
ilkka@...amperecomputing.com
Cc: oe-kbuild-all@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
mark.rutland@....com, treding@...dia.com, jonathanh@...dia.com,
vsethi@...dia.com, rwiley@...dia.com, sdonthineni@...dia.com,
skelley@...dia.com, ywan@...dia.com, mochs@...dia.com,
nirmoyd@...dia.com, Besar Wicaksono <bwicaksono@...dia.com>
Subject: Re: [PATCH 6/8] perf: add NVIDIA Tegra410 CPU Memory Latency PMU
Hi Besar,
kernel test robot noticed the following build errors:
[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on linus/master v6.19-rc7 next-20260127]
[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/Besar-Wicaksono/perf-arm_cspmu-nvidia-Rename-doc-to-Tegra241/20260127-021604
base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
patch link: https://lore.kernel.org/r/20260126181155.2776097-7-bwicaksono%40nvidia.com
patch subject: [PATCH 6/8] perf: add NVIDIA Tegra410 CPU Memory Latency PMU
config: arm64-randconfig-r113-20260128 (https://download.01.org/0day-ci/archive/20260128/202601280830.2IJaaITg-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9b8addffa70cee5b2acc5454712d9cf78ce45710)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260128/202601280830.2IJaaITg-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601280830.2IJaaITg-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/perf/nvidia_t410_cmem_latency_pmu.c:604:12: error: call to undeclared function 'acpi_device_uid'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
604 | uid_str = acpi_device_uid(acpi_dev);
| ^
drivers/perf/nvidia_t410_cmem_latency_pmu.c:604:12: note: did you mean 'cpu_device_up'?
include/linux/cpu.h:119:5: note: 'cpu_device_up' declared here
119 | int cpu_device_up(struct device *dev);
| ^
>> drivers/perf/nvidia_t410_cmem_latency_pmu.c:604:10: error: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion]
604 | uid_str = acpi_device_uid(acpi_dev);
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/perf/nvidia_t410_cmem_latency_pmu.c:619:29: error: call to undeclared function 'acpi_device_hid'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
619 | cmem_lat_pmu->identifier = acpi_device_hid(acpi_dev);
| ^
>> drivers/perf/nvidia_t410_cmem_latency_pmu.c:619:27: error: incompatible integer to pointer conversion assigning to 'const char *' from 'int' [-Wint-conversion]
619 | cmem_lat_pmu->identifier = acpi_device_hid(acpi_dev);
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~
4 errors generated.
vim +/acpi_device_uid +604 drivers/perf/nvidia_t410_cmem_latency_pmu.c
590
591 static int cmem_lat_pmu_probe(struct platform_device *pdev)
592 {
593 struct device *dev = &pdev->dev;
594 struct acpi_device *acpi_dev;
595 struct cmem_lat_pmu *cmem_lat_pmu;
596 char *name, *uid_str;
597 int ret, i;
598 u32 socket;
599
600 acpi_dev = ACPI_COMPANION(dev);
601 if (!acpi_dev)
602 return -ENODEV;
603
> 604 uid_str = acpi_device_uid(acpi_dev);
605 if (!uid_str)
606 return -ENODEV;
607
608 ret = kstrtou32(uid_str, 0, &socket);
609 if (ret)
610 return ret;
611
612 cmem_lat_pmu = devm_kzalloc(dev, sizeof(*cmem_lat_pmu), GFP_KERNEL);
613 name = devm_kasprintf(dev, GFP_KERNEL, "nvidia_cmem_latency_pmu_%u", socket);
614 if (!cmem_lat_pmu || !name)
615 return -ENOMEM;
616
617 cmem_lat_pmu->dev = dev;
618 cmem_lat_pmu->name = name;
> 619 cmem_lat_pmu->identifier = acpi_device_hid(acpi_dev);
620 platform_set_drvdata(pdev, cmem_lat_pmu);
621
622 cmem_lat_pmu->pmu = (struct pmu) {
623 .parent = &pdev->dev,
624 .task_ctx_nr = perf_invalid_context,
625 .pmu_enable = cmem_lat_pmu_enable,
626 .pmu_disable = cmem_lat_pmu_disable,
627 .event_init = cmem_lat_pmu_event_init,
628 .add = cmem_lat_pmu_add,
629 .del = cmem_lat_pmu_del,
630 .start = cmem_lat_pmu_start,
631 .stop = cmem_lat_pmu_stop,
632 .read = cmem_lat_pmu_read,
633 .attr_groups = cmem_lat_pmu_attr_groups,
634 .capabilities = PERF_PMU_CAP_NO_EXCLUDE |
635 PERF_PMU_CAP_NO_INTERRUPT,
636 };
637
638 /* Map the address of all the instances plus one for the broadcast. */
639 for (i = 0; i < NUM_INSTANCES + 1; i++) {
640 cmem_lat_pmu->base[i] = devm_platform_ioremap_resource(pdev, i);
641 if (IS_ERR(cmem_lat_pmu->base[i])) {
642 dev_err(dev, "Failed map address for instance %d\n", i);
643 return PTR_ERR(cmem_lat_pmu->base[i]);
644 }
645 }
646
647 ret = cmem_lat_pmu_get_cpus(cmem_lat_pmu, socket);
648 if (ret)
649 return ret;
650
651 ret = cpuhp_state_add_instance(cmem_lat_pmu_cpuhp_state,
652 &cmem_lat_pmu->node);
653 if (ret) {
654 dev_err(&pdev->dev, "Error %d registering hotplug\n", ret);
655 return ret;
656 }
657
658 cmem_lat_pmu_cg_ctrl(cmem_lat_pmu, CG_CTRL_ENABLE);
659 cmem_lat_pmu_ctrl(cmem_lat_pmu, CTRL_CLR);
660 cmem_lat_pmu_cg_ctrl(cmem_lat_pmu, CG_CTRL_DISABLE);
661
662 ret = perf_pmu_register(&cmem_lat_pmu->pmu, name, -1);
663 if (ret) {
664 dev_err(&pdev->dev, "Failed to register PMU: %d\n", ret);
665 cpuhp_state_remove_instance(cmem_lat_pmu_cpuhp_state,
666 &cmem_lat_pmu->node);
667 return ret;
668 }
669
670 dev_dbg(&pdev->dev, "Registered %s PMU\n", name);
671
672 return 0;
673 }
674
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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