* [android-common:android13-5.10 11238/13329] mm/page_pinner.c:229:28: warning: comparison of distinct pointer types ('typeof ((ts_usec)) *' (aka 'long long *') and 'uint64_t *' (aka 'unsigned long long *'))
@ 2021-09-05 1:09 kernel test robot
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From: kernel test robot @ 2021-09-05 1:09 UTC (permalink / raw)
To: kbuild-all
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tree: https://android.googlesource.com/kernel/common android13-5.10
head: a3fbac7deb9ced9fb9f5621becd276e7118d9f64
commit: 0445b67beee9639842df07960dcc3cc5bc30f0d0 [11238/13329] ANDROID: mm: page_pinner: change timestamp format
config: arm-randconfig-r024-20210903 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c9948e9254fbb6ea00f66c7b4542311d21e060be)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
git remote add android-common https://android.googlesource.com/kernel/common
git fetch --no-tags android-common android13-5.10
git checkout 0445b67beee9639842df07960dcc3cc5bc30f0d0
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> mm/page_pinner.c:229:28: warning: comparison of distinct pointer types ('typeof ((ts_usec)) *' (aka 'long long *') and 'uint64_t *' (aka 'unsigned long long *')) [-Wcompare-distinct-pointer-types]
unsigned long rem_usec = do_div(ts_usec, 1000000);
^~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/div64.h:226:28: note: expanded from macro 'do_div'
(void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~
mm/page_pinner.c:299:13: warning: comparison of distinct pointer types ('typeof ((ts_usec)) *' (aka 'long long *') and 'uint64_t *' (aka 'unsigned long long *')) [-Wcompare-distinct-pointer-types]
rem_usec = do_div(ts_usec, 1000000);
^~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/div64.h:226:28: note: expanded from macro 'do_div'
(void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~
mm/page_pinner.c:322:22: warning: variable 'page_pinner' set but not used [-Wunused-but-set-variable]
struct page_pinner *page_pinner;
^
3 warnings generated.
Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for USB_PHY
Depends on USB_SUPPORT
Selected by
- GKI_HIDDEN_USB_CONFIGS
WARNING: unmet direct dependencies detected for SND_VMASTER
Depends on SOUND && !UML && SND
Selected by
- GKI_HIDDEN_SND_CONFIGS
WARNING: unmet direct dependencies detected for SND_PCM_IEC958
Depends on SOUND && !UML && SND
Selected by
- GKI_HIDDEN_SND_SOC_CONFIGS
WARNING: unmet direct dependencies detected for DRM_TTM
Depends on HAS_IOMEM && DRM && MMU
Selected by
- GKI_HIDDEN_DRM_CONFIGS && HAS_IOMEM && DRM
WARNING: unmet direct dependencies detected for SND_JACK
Depends on SOUND && !UML && SND
Selected by
- GKI_HIDDEN_SND_CONFIGS
WARNING: unmet direct dependencies detected for SND_JACK_INPUT_DEV
Depends on SOUND && !UML && SND && SND_JACK
Selected by
- GKI_HIDDEN_SND_CONFIGS
WARNING: unmet direct dependencies detected for HMM_MIRROR
Depends on MMU
Selected by
- GKI_HIDDEN_GPU_CONFIGS
WARNING: unmet direct dependencies detected for SND_PCM_ELD
Depends on SOUND && !UML && SND
Selected by
- GKI_HIDDEN_SND_CONFIGS
WARNING: unmet direct dependencies detected for BALLOON_COMPACTION
Depends on COMPACTION && MEMORY_BALLOON
Selected by
- GKI_HIDDEN_MM_CONFIGS
vim +229 mm/page_pinner.c
210
211 static ssize_t
212 print_page_pinner(bool longterm, char __user *buf, size_t count, struct captured_pinner *record)
213 {
214 int ret;
215 unsigned long *entries;
216 unsigned int nr_entries;
217 char *kbuf;
218
219 count = min_t(size_t, count, PAGE_SIZE);
220 kbuf = kmalloc(count, GFP_KERNEL);
221 if (!kbuf)
222 return -ENOMEM;
223
224 if (longterm) {
225 ret = snprintf(kbuf, count, "Page pinned for %lld us\n",
226 record->elapsed);
227 } else {
228 s64 ts_usec = record->ts_usec;
> 229 unsigned long rem_usec = do_div(ts_usec, 1000000);
230
231 ret = snprintf(kbuf, count,
232 "Page pinned ts [%5lu.%06lu]\n",
233 (unsigned long)ts_usec, rem_usec);
234 }
235
236 if (ret >= count)
237 goto err;
238
239 /* Print information relevant to grouping pages by mobility */
240 ret += snprintf(kbuf + ret, count - ret,
241 "PFN %lu Block %lu type %s Flags %#lx(%pGp)\n",
242 record->pfn,
243 record->pfn >> pageblock_order,
244 migratetype_names[record->page_mt],
245 record->page_flags, &record->page_flags);
246
247 if (ret >= count)
248 goto err;
249
250 nr_entries = stack_depot_fetch(record->handle, &entries);
251 ret += stack_trace_snprint(kbuf + ret, count - ret, entries,
252 nr_entries, 0);
253 if (ret >= count)
254 goto err;
255
256 ret += snprintf(kbuf + ret, count - ret, "\n");
257 if (ret >= count)
258 goto err;
259
260 if (copy_to_user(buf, kbuf, ret))
261 ret = -EFAULT;
262
263 kfree(kbuf);
264 return ret;
265
266 err:
267 kfree(kbuf);
268 return -ENOMEM;
269 }
270
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-09-05 1:09 [android-common:android13-5.10 11238/13329] mm/page_pinner.c:229:28: warning: comparison of distinct pointer types ('typeof ((ts_usec)) *' (aka 'long long *') and 'uint64_t *' (aka 'unsigned long long *')) kernel test robot
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