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Message-ID: <202102191104.8PwQ82Oi-lkp@intel.com>
Date: Fri, 19 Feb 2021 12:04:07 +0800
From: kernel test robot <lkp@...el.com>
To: Alistair Popple <apopple@...dia.com>, linux-mm@...ck.org,
nouveau@...ts.freedesktop.org, bskeggs@...hat.com,
akpm@...ux-foundation.org
Cc: kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
kvm-ppc@...r.kernel.org, dri-devel@...ts.freedesktop.org,
jhubbard@...dia.com, rcampbell@...dia.com
Subject: Re: [PATCH v2 1/4] hmm: Device exclusive memory access
Hi Alistair,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on kselftest/next]
[also build test ERROR on linus/master v5.11 next-20210218]
[cannot apply to hnaz-linux-mm/master]
[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/Alistair-Popple/Add-support-for-SVM-atomics-in-Nouveau/20210219-100858
base: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git next
config: mips-randconfig-r036-20210218 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
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 mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://github.com/0day-ci/linux/commit/bb5444811772d30b2e3bbaa44baeb8a4b3f03cec
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Alistair-Popple/Add-support-for-SVM-atomics-in-Nouveau/20210219-100858
git checkout bb5444811772d30b2e3bbaa44baeb8a4b3f03cec
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
>> fs/proc/task_mmu.c:521:12: error: implicit declaration of function 'is_device_exclusive_entry' [-Werror,-Wimplicit-function-declaration]
else if (is_device_exclusive_entry(swpent))
^
fs/proc/task_mmu.c:521:12: note: did you mean 'is_device_private_entry'?
include/linux/swapops.h:176:20: note: 'is_device_private_entry' declared here
static inline bool is_device_private_entry(swp_entry_t entry)
^
>> fs/proc/task_mmu.c:522:11: error: implicit declaration of function 'device_exclusive_entry_to_page' [-Werror,-Wimplicit-function-declaration]
page = device_exclusive_entry_to_page(swpent);
^
fs/proc/task_mmu.c:522:11: note: did you mean 'device_private_entry_to_page'?
include/linux/swapops.h:191:28: note: 'device_private_entry_to_page' declared here
static inline struct page *device_private_entry_to_page(swp_entry_t entry)
^
>> fs/proc/task_mmu.c:522:9: warning: incompatible integer to pointer conversion assigning to 'struct page *' from 'int' [-Wint-conversion]
page = device_exclusive_entry_to_page(swpent);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/proc/task_mmu.c:1395:7: error: implicit declaration of function 'is_device_exclusive_entry' [-Werror,-Wimplicit-function-declaration]
if (is_device_exclusive_entry(entry))
^
fs/proc/task_mmu.c:1396:11: error: implicit declaration of function 'device_exclusive_entry_to_page' [-Werror,-Wimplicit-function-declaration]
page = device_exclusive_entry_to_page(entry);
^
fs/proc/task_mmu.c:1396:9: warning: incompatible integer to pointer conversion assigning to 'struct page *' from 'int' [-Wint-conversion]
page = device_exclusive_entry_to_page(entry);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 warnings and 4 errors generated.
vim +/is_device_exclusive_entry +521 fs/proc/task_mmu.c
490
491 static void smaps_pte_entry(pte_t *pte, unsigned long addr,
492 struct mm_walk *walk)
493 {
494 struct mem_size_stats *mss = walk->private;
495 struct vm_area_struct *vma = walk->vma;
496 bool locked = !!(vma->vm_flags & VM_LOCKED);
497 struct page *page = NULL;
498
499 if (pte_present(*pte)) {
500 page = vm_normal_page(vma, addr, *pte);
501 } else if (is_swap_pte(*pte)) {
502 swp_entry_t swpent = pte_to_swp_entry(*pte);
503
504 if (!non_swap_entry(swpent)) {
505 int mapcount;
506
507 mss->swap += PAGE_SIZE;
508 mapcount = swp_swapcount(swpent);
509 if (mapcount >= 2) {
510 u64 pss_delta = (u64)PAGE_SIZE << PSS_SHIFT;
511
512 do_div(pss_delta, mapcount);
513 mss->swap_pss += pss_delta;
514 } else {
515 mss->swap_pss += (u64)PAGE_SIZE << PSS_SHIFT;
516 }
517 } else if (is_migration_entry(swpent))
518 page = migration_entry_to_page(swpent);
519 else if (is_device_private_entry(swpent))
520 page = device_private_entry_to_page(swpent);
> 521 else if (is_device_exclusive_entry(swpent))
> 522 page = device_exclusive_entry_to_page(swpent);
523 } else if (unlikely(IS_ENABLED(CONFIG_SHMEM) && mss->check_shmem_swap
524 && pte_none(*pte))) {
525 page = xa_load(&vma->vm_file->f_mapping->i_pages,
526 linear_page_index(vma, addr));
527 if (xa_is_value(page))
528 mss->swap += PAGE_SIZE;
529 return;
530 }
531
532 if (!page)
533 return;
534
535 smaps_account(mss, page, false, pte_young(*pte), pte_dirty(*pte), locked);
536 }
537
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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