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[207.54.116.67]) by mx.google.com with ESMTPS id f55-v6si1371529jal.44.2018.11.07.12.54.38 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 07 Nov 2018 12:54:38 -0800 (PST) Received-SPF: pass (google.com: domain of gunthorp@deltatee.com designates 207.54.116.67 as permitted sender) client-ip=207.54.116.67; Authentication-Results: mx.google.com; spf=pass (google.com: domain of gunthorp@deltatee.com designates 207.54.116.67 as permitted sender) smtp.mailfrom=gunthorp@deltatee.com Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gKUqS-0005zI-Dz; Wed, 07 Nov 2018 13:54:37 -0700 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.89) (envelope-from ) id 1gKUqQ-00011K-Ij; Wed, 07 Nov 2018 13:54:34 -0700 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-sh@vger.kernel.org, Andrew Morton Cc: Stephen Bates , Palmer Dabbelt , Albert Ou , Christoph Hellwig , Arnd Bergmann , Logan Gunthorpe , Michal Hocko , Vlastimil Babka , Oscar Salvador Date: Wed, 7 Nov 2018 13:54:33 -0700 Message-Id: <20181107205433.3875-3-logang@deltatee.com> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181107205433.3875-1-logang@deltatee.com> References: <20181107205433.3875-1-logang@deltatee.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-sh@vger.kernel.org, akpm@linux-foundation.org, sbates@raithlin.com, palmer@sifive.com, aou@eecs.berkeley.edu, hch@lst.de, arnd@arndb.de, logang@deltatee.com, mhocko@suse.com, vbabka@suse.cz, osalvador@suse.de X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v2 2/2] mm/sparse: add common helper to mark all memblocks present X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP Presently the arches arm64, arm and sh have a function which loops through each memblock and calls memory present. riscv will require a similar function. Introduce a common memblocks_present() function that can be used by all the arches. Subsequent patches will cleanup the arches that make use of this. Signed-off-by: Logan Gunthorpe Acked-by: Andrew Morton Cc: Michal Hocko Cc: Vlastimil Babka Cc: Oscar Salvador --- include/linux/mmzone.h | 6 ++++++ mm/sparse.c | 16 ++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 847705a6d0ec..db023a92f3a4 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -783,6 +783,12 @@ void memory_present(int nid, unsigned long start, unsigned long end); static inline void memory_present(int nid, unsigned long start, unsigned long end) {} #endif +#if defined(CONFIG_SPARSEMEM) +void memblocks_present(void); +#else +static inline void memblocks_present(void) {} +#endif + #ifdef CONFIG_HAVE_MEMORYLESS_NODES int local_memory_node(int node_id); #else diff --git a/mm/sparse.c b/mm/sparse.c index 33307fc05c4d..3abc8cc50201 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -239,6 +239,22 @@ void __init memory_present(int nid, unsigned long start, unsigned long end) } } +/* + * Mark all memblocks as present using memory_present(). This is a + * convienence function that is useful for a number of arches + * to mark all of the systems memory as present during initialization. + */ +void __init memblocks_present(void) +{ + struct memblock_region *reg; + + for_each_memblock(memory, reg) { + memory_present(memblock_get_region_node(reg), + memblock_region_memory_base_pfn(reg), + memblock_region_memory_end_pfn(reg)); + } +} + /* * Subtle, we encode the real pfn into the mem_map such that * the identity pfn - section_mem_map will return the actual