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X-CSE-ConnectionGUID: I4za+Vl8SlC5iaYFOr4hsg== X-CSE-MsgGUID: CVrBOkPJTDW6vhTi78tkxg== X-IronPort-AV: E=McAfee;i="6800,10657,11531"; a="62968930" X-IronPort-AV: E=Sophos;i="6.17,312,1747724400"; d="scan'208";a="62968930" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Sep 2025 13:10:42 -0700 X-CSE-ConnectionGUID: JqVyyvvhQ7m/l28TUMxOow== X-CSE-MsgGUID: BlvYY114S769WpPW3JXOug== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,233,1751266800"; d="scan'208";a="202281602" Received: from lkp-server02.sh.intel.com (HELO 06ba48ef64e9) ([10.239.97.151]) by orviesa002.jf.intel.com with ESMTP; 02 Sep 2025 13:10:36 -0700 Received: from kbuild by 06ba48ef64e9 with local (Exim 4.96) (envelope-from ) id 1utXJx-0002zX-0W; Tue, 02 Sep 2025 20:09:52 +0000 Date: Wed, 3 Sep 2025 04:09:08 +0800 From: kernel test robot To: Ankur Arora , linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org Cc: oe-kbuild-all@lists.linux.dev, akpm@linux-foundation.org, david@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com, mjguzik@gmail.com, luto@kernel.org, peterz@infradead.org, acme@kernel.org, namhyung@kernel.org, tglx@linutronix.de, willy@infradead.org, raghavendra.kt@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com, ankur.a.arora@oracle.com Subject: Re: [PATCH v6 11/15] mm: define clear_pages(), clear_user_pages() Message-ID: <202509030338.DlQJTxIk-lkp@intel.com> References: <20250902080816.3715913-12-ankur.a.arora@oracle.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250902080816.3715913-12-ankur.a.arora@oracle.com> Hi Ankur, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Ankur-Arora/perf-bench-mem-Remove-repetition-around-time-measurement/20250902-161417 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20250902080816.3715913-12-ankur.a.arora%40oracle.com patch subject: [PATCH v6 11/15] mm: define clear_pages(), clear_user_pages() config: sparc-defconfig (https://download.01.org/0day-ci/archive/20250903/202509030338.DlQJTxIk-lkp@intel.com/config) compiler: sparc-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250903/202509030338.DlQJTxIk-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202509030338.DlQJTxIk-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from arch/sparc/include/asm/page.h:8, from arch/sparc/include/asm/string_32.h:13, from arch/sparc/include/asm/string.h:7, from include/linux/string.h:65, from include/linux/bitmap.h:13, from include/linux/cpumask.h:12, from arch/sparc/include/asm/smp_32.h:15, from arch/sparc/include/asm/smp.h:7, from arch/sparc/include/asm/switch_to_32.h:5, from arch/sparc/include/asm/switch_to.h:7, from arch/sparc/include/asm/ptrace.h:120, from arch/sparc/include/asm/thread_info_32.h:19, from arch/sparc/include/asm/thread_info.h:7, from include/linux/thread_info.h:60, from include/asm-generic/preempt.h:5, from ./arch/sparc/include/generated/asm/preempt.h:1, from include/linux/preempt.h:79, from include/linux/spinlock.h:56, from include/linux/mmzone.h:8, from include/linux/gfp.h:7, from include/linux/umh.h:4, from include/linux/kmod.h:9, from include/linux/module.h:18, from init/main.c:18: include/linux/mm.h: In function 'clear_user_pages': arch/sparc/include/asm/page_32.h:22:17: error: implicit declaration of function 'sparc_flush_page_to_ram' [-Wimplicit-function-declaration] 22 | sparc_flush_page_to_ram(page); \ | ^~~~~~~~~~~~~~~~~~~~~~~ include/linux/mm.h:3886:17: note: in expansion of macro 'clear_user_page' 3886 | clear_user_page(addr + i * PAGE_SIZE, | ^~~~~~~~~~~~~~~ In file included from arch/sparc/include/asm/cacheflush.h:11, from include/linux/cacheflush.h:5, from include/linux/highmem.h:8, from include/linux/bvec.h:10, from include/linux/blk_types.h:10, from include/linux/writeback.h:13, from include/linux/memcontrol.h:23, from include/linux/bpf.h:31, from include/linux/security.h:35, from include/linux/perf_event.h:53, from include/linux/trace_events.h:10, from include/trace/syscall.h:7, from include/linux/syscalls.h:95, from init/main.c:22: arch/sparc/include/asm/cacheflush_32.h: At top level: >> arch/sparc/include/asm/cacheflush_32.h:38:6: warning: conflicting types for 'sparc_flush_page_to_ram'; have 'void(struct page *)' 38 | void sparc_flush_page_to_ram(struct page *page); | ^~~~~~~~~~~~~~~~~~~~~~~ arch/sparc/include/asm/page_32.h:22:17: note: previous implicit declaration of 'sparc_flush_page_to_ram' with type 'void(struct page *)' 22 | sparc_flush_page_to_ram(page); \ | ^~~~~~~~~~~~~~~~~~~~~~~ include/linux/mm.h:3886:17: note: in expansion of macro 'clear_user_page' 3886 | clear_user_page(addr + i * PAGE_SIZE, | ^~~~~~~~~~~~~~~ vim +38 arch/sparc/include/asm/cacheflush_32.h f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 19 f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 20 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 21 do { \ f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 22 flush_cache_page(vma, vaddr, page_to_pfn(page));\ f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 23 memcpy(dst, src, len); \ f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 24 } while (0) f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 25 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 26 do { \ f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 27 flush_cache_page(vma, vaddr, page_to_pfn(page));\ f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 28 memcpy(dst, src, len); \ f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 29 } while (0) f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 30 5d83d66635bb16 arch/sparc/include/asm/cacheflush_32.h David S. Miller 2012-05-13 31 #define __flush_page_to_ram(addr) \ 5d83d66635bb16 arch/sparc/include/asm/cacheflush_32.h David S. Miller 2012-05-13 32 sparc32_cachetlb_ops->page_to_ram(addr) 5d83d66635bb16 arch/sparc/include/asm/cacheflush_32.h David S. Miller 2012-05-13 33 #define flush_sig_insns(mm,insn_addr) \ 5d83d66635bb16 arch/sparc/include/asm/cacheflush_32.h David S. Miller 2012-05-13 34 sparc32_cachetlb_ops->sig_insns(mm, insn_addr) 5d83d66635bb16 arch/sparc/include/asm/cacheflush_32.h David S. Miller 2012-05-13 35 #define flush_page_for_dma(addr) \ 5d83d66635bb16 arch/sparc/include/asm/cacheflush_32.h David S. Miller 2012-05-13 36 sparc32_cachetlb_ops->page_for_dma(addr) f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 37 f05a68653e56ca arch/sparc/include/asm/cacheflush_32.h Sam Ravnborg 2014-05-16 @38 void sparc_flush_page_to_ram(struct page *page); 665f640294540a arch/sparc/include/asm/cacheflush_32.h Matthew Wilcox (Oracle 2023-08-02 39) void sparc_flush_folio_to_ram(struct folio *folio); f5e706ad886b6a include/asm-sparc/cacheflush_32.h Sam Ravnborg 2008-07-17 40 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki