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Miller" , Dave Hansen , David Hildenbrand , Dinh Nguyen , Geert Uytterhoeven , Guo Ren , Heiko Carstens , Helge Deller , Huacai Chen , Ingo Molnar , Johannes Berg , John Paul Adrian Glaubitz , Jonathan Corbet , "Liam R. Howlett" , Lorenzo Stoakes , Magnus Lindholm , Matt Turner , Max Filippov , Michael Ellerman , Michal Hocko , Michal Simek , Mike Rapoport , Muchun Song , Oscar Salvador , Palmer Dabbelt , Pratyush Yadav , Richard Weinberger , Russell King , Stafford Horne , Suren Baghdasaryan , Thomas Bogendoerfer , Thomas Gleixner , Vasily Gorbik , Vineet Gupta , Vlastimil Babka , Will Deacon , x86@kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-cxl@vger.kernel.org, linux-doc@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-um@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org Subject: [PATCH v2 10/28] mips: introduce arch_zone_limits_init() Date: Fri, 2 Jan 2026 08:59:46 +0200 Message-ID: <20260102070005.65328-11-rppt@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260102070005.65328-1-rppt@kernel.org> References: <20260102070005.65328-1-rppt@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: "Mike Rapoport (Microsoft)" Move calculations of zone limits to a dedicated arch_zone_limits_init() function. Later MM core will use this function as an architecture specific callback during nodes and zones initialization and thus there won't be a need to call free_area_init() from every architecture. Signed-off-by: Mike Rapoport (Microsoft) --- arch/mips/loongson64/numa.c | 9 +++++++-- arch/mips/mm/init.c | 14 +++++++++----- arch/mips/sgi-ip27/ip27-memory.c | 7 ++++++- 3 files changed, 22 insertions(+), 8 deletions(-) diff --git a/arch/mips/loongson64/numa.c b/arch/mips/loongson64/numa.c index 95d5f553ce19..f72a58f87878 100644 --- a/arch/mips/loongson64/numa.c +++ b/arch/mips/loongson64/numa.c @@ -154,13 +154,18 @@ static __init void prom_meminit(void) } } +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN; + max_zone_pfns[ZONE_NORMAL] = max_low_pfn; +} + void __init paging_init(void) { unsigned long zones_size[MAX_NR_ZONES] = {0, }; pagetable_init(); - zones_size[ZONE_DMA32] = MAX_DMA32_PFN; - zones_size[ZONE_NORMAL] = max_low_pfn; + arch_zone_limits_init(zones_size); free_area_init(zones_size); } diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index a673d3d68254..ab08249cfede 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -394,12 +394,8 @@ void maar_init(void) } #ifndef CONFIG_NUMA -void __init paging_init(void) +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) { - unsigned long max_zone_pfns[MAX_NR_ZONES]; - - pagetable_init(); - #ifdef CONFIG_ZONE_DMA max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN; #endif @@ -417,7 +413,15 @@ void __init paging_init(void) max_zone_pfns[ZONE_HIGHMEM] = max_low_pfn; } #endif +} + +void __init paging_init(void) +{ + unsigned long max_zone_pfns[MAX_NR_ZONES]; + + pagetable_init(); + arch_zone_limits_init(max_zone_pfns); free_area_init(max_zone_pfns); } diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c index 2b3e46e2e607..babeb0e07687 100644 --- a/arch/mips/sgi-ip27/ip27-memory.c +++ b/arch/mips/sgi-ip27/ip27-memory.c @@ -406,11 +406,16 @@ void __init prom_meminit(void) } } +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + max_zone_pfns[ZONE_NORMAL] = max_low_pfn; +} + void __init paging_init(void) { unsigned long zones_size[MAX_NR_ZONES] = {0, }; pagetable_init(); - zones_size[ZONE_NORMAL] = max_low_pfn; + arch_zone_limits_init(zones_size); free_area_init(zones_size); } -- 2.51.0