linux-kernel - Re: [PATCH v7 1/4] ioremap: Update pgtable free interfaces with addr

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Date:   Tue, 3 Apr 2018 13:31:52 +0530
From:   Chintan Pandya <cpandya@...eaurora.org>
To:     kbuild test robot <lkp@...el.com>
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
Subject: Re: [PATCH v7 1/4] ioremap: Update pgtable free interfaces with addr



On 3/29/2018 5:23 PM, kbuild test robot wrote:
> Hi Chintan,
> 
> Thank you for the patch! Yet something to improve:
> 
> [auto build test ERROR on v4.16-rc7]
> [also build test ERROR 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/ioremap-Update-pgtable-free-interfaces-with-addr/20180329-133736
> config: x86_64-rhel (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 errors (new ones prefixed by >>):
> 
>     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]), addr + (i * PMD_SIZE))
>             ^~~~~~~~~~~~~~~~~
>     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);
>          ^~~~~~~~~~~~~~~~~
>     arch/x86/mm/pgtable.c:725:34: warning: left-hand operand of comma expression has no effect [-Wunused-value]
>        if (!pmd_free_pte_page(&pmd[i]), addr + (i * PMD_SIZE))
>                                       ^
> 
> vim +/pmd_free_pte_page +725 arch/x86/mm/pgtable.c
> 
>     705	
>     706	/**
>     707	 * pud_free_pmd_page - Clear pud entry and free pmd page.
>     708	 * @pud: Pointer to a PUD.
>     709	 * @addr: Virtual address associated with pud.
>     710	 *
>     711	 * Context: The pud range has been unmaped and TLB purged.
>     712	 * Return: 1 if clearing the entry succeeded. 0 otherwise.
>     713	 */
>     714	int pud_free_pmd_page(pud_t *pud, unsigned long addr)
>     715	{
>     716		pmd_t *pmd;
>     717		int i;
>     718	
>     719		if (pud_none(*pud))
>     720			return 1;
>     721	
>     722		pmd = (pmd_t *)pud_page_vaddr(*pud);
>     723	
>     724		for (i = 0; i < PTRS_PER_PMD; i++)
>   > 725			if (!pmd_free_pte_page(&pmd[i]), addr + (i * PMD_SIZE))

Missed it. Will upload v8
>     726				return 0;
>     727	
>     728		pud_clear(pud);
>     729		free_page((unsigned long)pmd);
>     730	
>     731		return 1;
>     732	}
>     733	
> 
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
> 

Chintan
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