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Date: Wed, 28 Mar 2018 21:12:59 +0800
From: kbuild test robot <lkp@...el.com>
To: Chintan Pandya <cpandya@...eaurora.org>
Cc: kbuild-all@...org, catalin.marinas@....com, will.deacon@....com,
mark.rutland@....com, toshi.kani@....com, arnd@...db.de,
ard.biesheuvel@...aro.org, marc.zyngier@....com,
james.morse@....com, kristina.martsenko@....com,
takahiro.akashi@...aro.org, gregkh@...uxfoundation.org,
tglx@...utronix.de, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
akpm@...ux-foundation.org, Chintan Pandya <cpandya@...eaurora.org>
Subject: Re: [PATCH v5 1/4] ioremap: Update pgtable free interfaces with addr
Hi Chintan,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on v4.16-rc7]
[also build test WARNING on next-20180328]
[cannot apply to arm64/for-next/core tip/x86/core asm-generic/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Chintan-Pandya/Fix-issues-with-huge-mapping-in-ioremap-for-ARM64/20180328-192254
config: x86_64-randconfig-x019-201812 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
In file included from include/asm-generic/bug.h:5:0,
from arch/x86/include/asm/bug.h:83,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:9,
from arch/x86//mm/pgtable.c:2:
arch/x86//mm/pgtable.c: In function 'pud_free_pmd_page':
arch/x86//mm/pgtable.c:725:8: error: too few arguments to function 'pmd_free_pte_page'
if (!pmd_free_pte_page(&pmd[i]))
^
include/linux/compiler.h:58:30: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^~~~
>> arch/x86//mm/pgtable.c:725:3: note: in expansion of macro 'if'
if (!pmd_free_pte_page(&pmd[i]))
^~
In file included from arch/x86/include/asm/pgtable.h:1292:0,
from include/linux/memremap.h:8,
from include/linux/mm.h:27,
from arch/x86//mm/pgtable.c:2:
include/asm-generic/pgtable.h:987:5: note: declared here
int pmd_free_pte_page(pmd_t *pmd, unsigned long addr);
^~~~~~~~~~~~~~~~~
In file included from include/asm-generic/bug.h:5:0,
from arch/x86/include/asm/bug.h:83,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:9,
from arch/x86//mm/pgtable.c:2:
arch/x86//mm/pgtable.c:725:8: error: too few arguments to function 'pmd_free_pte_page'
if (!pmd_free_pte_page(&pmd[i]))
^
include/linux/compiler.h:58:42: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^~~~
>> arch/x86//mm/pgtable.c:725:3: note: in expansion of macro 'if'
if (!pmd_free_pte_page(&pmd[i]))
^~
In file included from arch/x86/include/asm/pgtable.h:1292:0,
from include/linux/memremap.h:8,
from include/linux/mm.h:27,
from arch/x86//mm/pgtable.c:2:
include/asm-generic/pgtable.h:987:5: note: declared here
int pmd_free_pte_page(pmd_t *pmd, unsigned long addr);
^~~~~~~~~~~~~~~~~
In file included from include/asm-generic/bug.h:5:0,
from arch/x86/include/asm/bug.h:83,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:9,
from arch/x86//mm/pgtable.c:2:
arch/x86//mm/pgtable.c:725:8: error: too few arguments to function 'pmd_free_pte_page'
if (!pmd_free_pte_page(&pmd[i]))
^
include/linux/compiler.h:69:16: note: in definition of macro '__trace_if'
______r = !!(cond); \
^~~~
>> arch/x86//mm/pgtable.c:725:3: note: in expansion of macro 'if'
if (!pmd_free_pte_page(&pmd[i]))
^~
In file included from arch/x86/include/asm/pgtable.h:1292:0,
from include/linux/memremap.h:8,
from include/linux/mm.h:27,
from arch/x86//mm/pgtable.c:2:
include/asm-generic/pgtable.h:987:5: note: declared here
int pmd_free_pte_page(pmd_t *pmd, unsigned long addr);
^~~~~~~~~~~~~~~~~
vim +/if +725 arch/x86//mm/pgtable.c
b6bdb751 Toshi Kani 2018-03-22 705
b6bdb751 Toshi Kani 2018-03-22 706 /**
b6bdb751 Toshi Kani 2018-03-22 707 * pud_free_pmd_page - Clear pud entry and free pmd page.
b6bdb751 Toshi Kani 2018-03-22 708 * @pud: Pointer to a PUD.
5b7ee34c Chintan Pandya 2018-03-27 709 * @addr: Virtual address associated with pud.
b6bdb751 Toshi Kani 2018-03-22 710 *
b6bdb751 Toshi Kani 2018-03-22 711 * Context: The pud range has been unmaped and TLB purged.
b6bdb751 Toshi Kani 2018-03-22 712 * Return: 1 if clearing the entry succeeded. 0 otherwise.
b6bdb751 Toshi Kani 2018-03-22 713 */
5b7ee34c Chintan Pandya 2018-03-27 714 int pud_free_pmd_page(pud_t *pud, unsigned long addr)
b6bdb751 Toshi Kani 2018-03-22 715 {
28ee90fe Toshi Kani 2018-03-22 716 pmd_t *pmd;
28ee90fe Toshi Kani 2018-03-22 717 int i;
28ee90fe Toshi Kani 2018-03-22 718
28ee90fe Toshi Kani 2018-03-22 719 if (pud_none(*pud))
28ee90fe Toshi Kani 2018-03-22 720 return 1;
28ee90fe Toshi Kani 2018-03-22 721
28ee90fe Toshi Kani 2018-03-22 722 pmd = (pmd_t *)pud_page_vaddr(*pud);
28ee90fe Toshi Kani 2018-03-22 723
28ee90fe Toshi Kani 2018-03-22 724 for (i = 0; i < PTRS_PER_PMD; i++)
28ee90fe Toshi Kani 2018-03-22 @725 if (!pmd_free_pte_page(&pmd[i]))
28ee90fe Toshi Kani 2018-03-22 726 return 0;
28ee90fe Toshi Kani 2018-03-22 727
28ee90fe Toshi Kani 2018-03-22 728 pud_clear(pud);
28ee90fe Toshi Kani 2018-03-22 729 free_page((unsigned long)pmd);
28ee90fe Toshi Kani 2018-03-22 730
28ee90fe Toshi Kani 2018-03-22 731 return 1;
b6bdb751 Toshi Kani 2018-03-22 732 }
b6bdb751 Toshi Kani 2018-03-22 733
:::::: The code at line 725 was first introduced by commit
:::::: 28ee90fe6048fa7b7ceaeb8831c0e4e454a4cf89 x86/mm: implement free pmd/pte page interfaces
:::::: TO: Toshi Kani <toshi.kani@....com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
---
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