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Fri, 8 Mar 2019 08:08:09 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id OGpU6J3v8nYj; Fri, 8 Mar 2019 08:08:09 +0100 (CET) Received: from PO15451 (po15451.idsi0.si.c-s.fr [172.25.231.2]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 9E86C8B75A; Fri, 8 Mar 2019 08:08:09 +0100 (CET) Subject: Re: [PATCH v2] powerpc: silence unused-but-set-variable warnings To: Qian Cai , benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org References: <20190307144031.52494-1-cai@lca.pw> From: Christophe Leroy Message-ID: Date: Fri, 8 Mar 2019 08:08:09 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: <20190307144031.52494-1-cai@lca.pw> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le 07/03/2019 à 15:40, Qian Cai a écrit : > pte_unmap() compiles away on some powerpc platforms, so silence the > warnings below by making it a static inline function. > > mm/memory.c: In function 'copy_pte_range': > mm/memory.c:820:24: warning: variable 'orig_dst_pte' set but not used > [-Wunused-but-set-variable] > mm/memory.c:820:9: warning: variable 'orig_src_pte' set but not used > [-Wunused-but-set-variable] > mm/madvise.c: In function 'madvise_free_pte_range': > mm/madvise.c:318:9: warning: variable 'orig_pte' set but not used > [-Wunused-but-set-variable] > mm/swap_state.c: In function 'swap_ra_info': > mm/swap_state.c:634:15: warning: variable 'orig_pte' set but not used > [-Wunused-but-set-variable] > > Suggested-by: Christophe Leroy > Signed-off-by: Qian Cai Reviewed-by: Christophe Leroy > --- > > v2: make it a static inline function. > > arch/powerpc/include/asm/book3s/64/pgtable.h | 3 ++- > arch/powerpc/include/asm/nohash/64/pgtable.h | 3 ++- > 2 files changed, 4 insertions(+), 2 deletions(-) > > diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h > index 868fcaf56f6b..d798e33a0c86 100644 > --- a/arch/powerpc/include/asm/book3s/64/pgtable.h > +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h > @@ -1006,7 +1006,8 @@ extern struct page *pgd_page(pgd_t pgd); > (((pte_t *) pmd_page_vaddr(*(dir))) + pte_index(addr)) > > #define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr)) > -#define pte_unmap(pte) do { } while(0) > + > +static inline void pte_unmap(pte_t *pte) { } > > /* to find an entry in a kernel page-table-directory */ > /* This now only contains the vmalloc pages */ > diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h > index e77ed9761632..0384a3302fb6 100644 > --- a/arch/powerpc/include/asm/nohash/64/pgtable.h > +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h > @@ -205,7 +205,8 @@ static inline void pgd_set(pgd_t *pgdp, unsigned long val) > (((pte_t *) pmd_page_vaddr(*(dir))) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))) > > #define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr)) > -#define pte_unmap(pte) do { } while(0) > + > +static inline void pte_unmap(pte_t *pte) { } > > /* to find an entry in a kernel page-table-directory */ > /* This now only contains the vmalloc pages */ >