Re: [PATCH] sparc64 mm: Fix more TSB sizing issues

From: kbuild test robot
Date: Tue Aug 30 2016 - 18:52:56 EST


Hi Mike,

[auto build test ERROR on sparc/master]
[also build test ERROR on v4.8-rc4 next-20160825]
[cannot apply to sparc-next/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url: https://github.com/0day-ci/linux/commits/Mike-Kravetz/sparc64-mm-Fix-more-TSB-sizing-issues/20160831-054025
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git master
config: sparc64-allnoconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=sparc64

All errors (new ones prefixed by >>):

arch/sparc/mm/tsb.c: In function 'init_new_context':
>> arch/sparc/mm/tsb.c:504:4: error: 'saved_thp_pte_count' undeclared (first use in this function)
saved_thp_pte_count * (HPAGE_SIZE / PAGE_SIZE));
^
arch/sparc/mm/tsb.c:504:4: note: each undeclared identifier is reported only once for each function it appears in
>> arch/sparc/mm/tsb.c:504:27: error: 'HPAGE_SIZE' undeclared (first use in this function)
saved_thp_pte_count * (HPAGE_SIZE / PAGE_SIZE));
^

vim +/saved_thp_pte_count +504 arch/sparc/mm/tsb.c

498 mm->context.tsb_block[i].tsb = NULL;
499
500 /* If this is fork, inherit the parent's TSB size. We would
501 * grow it to that size on the first page fault anyways.
502 */
503 tsb_grow(mm, MM_TSB_BASE, get_mm_rss(mm) -
> 504 saved_thp_pte_count * (HPAGE_SIZE / PAGE_SIZE));
505
506 #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE)
507 if (unlikely(saved_hugetlb_pte_count + saved_thp_pte_count))

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