[PATCH v2 04/28] arm64: introduce arch_zone_limits_init()
Mike Rapoport <[email protected]>
| Newsgroups | gmane.linux.ports.riscv,gmane.linux.ports.alpha,gmane.linux.ports.arm.kernel,gmane.linux.documentation,gmane.linux.ports.hexagon,gmane.linux.kernel,gmane.linux.ports.mips,gmane.linux.kernel.mm,gmane.linux.ports.parisc,gmane.linux.ports.sh.devel,gmane.linux.kernel.arc,gmane.linux.uml.devel,gmane.linux.ports.ppc64.devel,gmane.linux.ports.sparc |
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| Message-ID | <[email protected]> |
From: "Mike Rapoport (Microsoft)" <[email protected]> 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. While on it rename zone_sizes_init() to dma_limits_init() to better reflect what that function does. Signed-off-by: Mike Rapoport (Microsoft) <[email protected]> --- arch/arm64/mm/init.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 524d34a0e921..06815d34cc11 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -118,7 +118,21 @@ static phys_addr_t __init max_zone_phys(phys_addr_t zone_limit) return min(zone_limit, memblock_end_of_DRAM() - 1) + 1; } -static void __init zone_sizes_init(void) +void __init arch_zone_limits_init(unsigned long *max_zone_pfns) +{ + phys_addr_t __maybe_unused dma32_phys_limit = + max_zone_phys(DMA_BIT_MASK(32)); + +#ifdef CONFIG_ZONE_DMA + max_zone_pfns[ZONE_DMA] = PFN_DOWN(max_zone_phys(zone_dma_limit)); +#endif +#ifdef CONFIG_ZONE_DMA32 + max_zone_pfns[ZONE_DMA32] = PFN_DOWN(dma32_phys_limit); +#endif + max_zone_pfns[ZONE_NORMAL] = max_pfn; +} + +static void __init dma_limits_init(void) { unsigned long max_zone_pfns[MAX_NR_ZONES] = {0}; phys_addr_t __maybe_unused acpi_zone_dma_limit; @@ -139,17 +153,15 @@ static void __init zone_sizes_init(void) if (memblock_start_of_DRAM() < U32_MAX) zone_dma_limit = min(zone_dma_limit, U32_MAX); arm64_dma_phys_limit = max_zone_phys(zone_dma_limit); - max_zone_pfns[ZONE_DMA] = PFN_DOWN(arm64_dma_phys_limit); #endif #ifdef CONFIG_ZONE_DMA32 - max_zone_pfns[ZONE_DMA32] = PFN_DOWN(dma32_phys_limit); if (!arm64_dma_phys_limit) arm64_dma_phys_limit = dma32_phys_limit; #endif if (!arm64_dma_phys_limit) arm64_dma_phys_limit = PHYS_MASK + 1; - max_zone_pfns[ZONE_NORMAL] = max_pfn; + arch_zone_limits_init(max_zone_pfns); free_area_init(max_zone_pfns); } @@ -319,7 +331,7 @@ void __init bootmem_init(void) * done after the fixed reservations */ sparse_init(); - zone_sizes_init(); + dma_limits_init(); /* * Reserve the CMA area after arm64_dma_phys_limit was initialised. -- 2.51.0