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Message-ID: <202409210634.k6bIKrGM-lkp@intel.com>
Date: Sat, 21 Sep 2024 07:08:10 +0800
From: kernel test robot <lkp@...el.com>
To: Gowthami Thiagarajan <gthiagarajan@...vell.com>, will@...nel.org,
mark.rutland@....com, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
sgoutham@...vell.com, lcherian@...vell.com, gcherian@...vell.com,
Gowthami Thiagarajan <gthiagarajan@...vell.com>
Subject: Re: [PATCH v7] perf/marvell: Marvell PEM performance monitor support
Hi Gowthami,
kernel test robot noticed the following build errors:
[auto build test ERROR on tip/smp/core]
[also build test ERROR on soc/for-next linus/master v6.11 next-20240920]
[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/Gowthami-Thiagarajan/perf-marvell-Marvell-PEM-performance-monitor-support/20240919-205406
base: tip/smp/core
patch link: https://lore.kernel.org/r/20240919125117.3484572-1-gthiagarajan%40marvell.com
patch subject: [PATCH v7] perf/marvell: Marvell PEM performance monitor support
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20240921/202409210634.k6bIKrGM-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 8663a75fa2f31299ab8d1d90288d9df92aadee88)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240921/202409210634.k6bIKrGM-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/202409210634.k6bIKrGM-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from drivers/perf/marvell_pem_pmu.c:10:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/perf/marvell_pem_pmu.c:10:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/perf/marvell_pem_pmu.c:10:
In file included from include/linux/io.h:14:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
In file included from drivers/perf/marvell_pem_pmu.c:12:
In file included from include/linux/perf_event.h:18:
In file included from include/uapi/linux/bpf_perf_event.h:11:
In file included from ./arch/hexagon/include/generated/uapi/asm/bpf_perf_event.h:1:
In file included from include/uapi/asm-generic/bpf_perf_event.h:4:
In file included from include/linux/ptrace.h:10:
In file included from include/linux/pid_namespace.h:7:
In file included from include/linux/mm.h:2232:
include/linux/vmstat.h:517:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
517 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
>> drivers/perf/marvell_pem_pmu.c:232:9: error: call to undeclared function 'readq_relaxed'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
232 | return readq_relaxed(pmu->base + eventid_to_offset(eventid));
| ^
>> drivers/perf/marvell_pem_pmu.c:354:10: warning: format specifies type 'unsigned long long' but the argument has type 'resource_size_t' (aka 'unsigned int') [-Wformat]
353 | name = devm_kasprintf(pem_pmu->dev, GFP_KERNEL, "mrvl_pcie_rc_pmu_%llx",
| ~~~~
| %x
354 | res->start);
| ^~~~~~~~~~
8 warnings and 1 error generated.
vim +/readq_relaxed +232 drivers/perf/marvell_pem_pmu.c
228
229 static u64 pem_perf_read_counter(struct pem_pmu *pmu,
230 struct perf_event *event, int eventid)
231 {
> 232 return readq_relaxed(pmu->base + eventid_to_offset(eventid));
233 }
234
235 static void pem_perf_event_update(struct perf_event *event)
236 {
237 struct pem_pmu *pmu = to_pem_pmu(event->pmu);
238 struct hw_perf_event *hwc = &event->hw;
239 u64 prev_count, new_count;
240
241 do {
242 prev_count = local64_read(&hwc->prev_count);
243 new_count = pem_perf_read_counter(pmu, event, hwc->idx);
244 } while (local64_xchg(&hwc->prev_count, new_count) != prev_count);
245
246 local64_add((new_count - prev_count), &event->count);
247 }
248
249 static void pem_perf_event_start(struct perf_event *event, int flags)
250 {
251 struct pem_pmu *pmu = to_pem_pmu(event->pmu);
252 struct hw_perf_event *hwc = &event->hw;
253 int eventid = hwc->idx;
254
255 /*
256 * All counters are free-running and associated with
257 * a fixed event to track in Hardware
258 */
259 local64_set(&hwc->prev_count,
260 pem_perf_read_counter(pmu, event, eventid));
261
262 hwc->state = 0;
263 }
264
265 static int pem_perf_event_add(struct perf_event *event, int flags)
266 {
267 struct hw_perf_event *hwc = &event->hw;
268
269 hwc->idx = event->attr.config;
270 if (WARN_ON_ONCE(hwc->idx >= PEM_EVENTIDS_MAX))
271 return -EINVAL;
272 hwc->state |= PERF_HES_STOPPED;
273
274 if (flags & PERF_EF_START)
275 pem_perf_event_start(event, flags);
276
277 return 0;
278 }
279
280 static void pem_perf_event_stop(struct perf_event *event, int flags)
281 {
282 struct hw_perf_event *hwc = &event->hw;
283
284 if (flags & PERF_EF_UPDATE)
285 pem_perf_event_update(event);
286
287 hwc->state |= PERF_HES_STOPPED;
288 }
289
290 static void pem_perf_event_del(struct perf_event *event, int flags)
291 {
292 struct hw_perf_event *hwc = &event->hw;
293
294 pem_perf_event_stop(event, PERF_EF_UPDATE);
295 hwc->idx = -1;
296 }
297
298 static int pem_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node)
299 {
300 struct pem_pmu *pmu = hlist_entry_safe(node, struct pem_pmu,
301 node);
302 unsigned int target;
303
304 if (cpu != pmu->cpu)
305 return 0;
306
307 target = cpumask_any_but(cpu_online_mask, cpu);
308 if (target >= nr_cpu_ids)
309 return 0;
310
311 perf_pmu_migrate_context(&pmu->pmu, cpu, target);
312 pmu->cpu = target;
313 return 0;
314 }
315
316 static int pem_perf_probe(struct platform_device *pdev)
317 {
318 struct pem_pmu *pem_pmu;
319 struct resource *res;
320 void __iomem *base;
321 char *name;
322 int ret;
323
324 pem_pmu = devm_kzalloc(&pdev->dev, sizeof(*pem_pmu), GFP_KERNEL);
325 if (!pem_pmu)
326 return -ENOMEM;
327
328 pem_pmu->dev = &pdev->dev;
329 platform_set_drvdata(pdev, pem_pmu);
330
331 base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
332 if (IS_ERR(base))
333 return PTR_ERR(base);
334
335 pem_pmu->base = base;
336
337 pem_pmu->pmu = (struct pmu) {
338 .module = THIS_MODULE,
339 .capabilities = PERF_PMU_CAP_NO_EXCLUDE,
340 .task_ctx_nr = perf_invalid_context,
341 .attr_groups = pem_perf_attr_groups,
342 .event_init = pem_perf_event_init,
343 .add = pem_perf_event_add,
344 .del = pem_perf_event_del,
345 .start = pem_perf_event_start,
346 .stop = pem_perf_event_stop,
347 .read = pem_perf_event_update,
348 };
349
350 /* Choose this cpu to collect perf data */
351 pem_pmu->cpu = raw_smp_processor_id();
352
353 name = devm_kasprintf(pem_pmu->dev, GFP_KERNEL, "mrvl_pcie_rc_pmu_%llx",
> 354 res->start);
355 if (!name)
356 return -ENOMEM;
357
358 cpuhp_state_add_instance_nocalls(CPUHP_AP_PERF_ARM_MRVL_PEM_ONLINE,
359 &pem_pmu->node);
360
361 ret = perf_pmu_register(&pem_pmu->pmu, name, -1);
362 if (ret)
363 goto error;
364
365 return 0;
366 error:
367 cpuhp_state_remove_instance_nocalls(CPUHP_AP_PERF_ARM_MRVL_PEM_ONLINE,
368 &pem_pmu->node);
369 return ret;
370 }
371
--
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https://github.com/intel/lkp-tests/wiki
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