From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: catalin.marinas@arm.com, hch@lst.de, wahrenst@gmx.net,
marc.zyngier@arm.com, Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
iommu@lists.linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Cc: phill@raspberryi.org, f.fainelli@gmail.com, will@kernel.org,
robh+dt@kernel.org, eric@anholt.net, mbrugger@suse.com,
nsaenzjulienne@suse.de, akpm@linux-foundation.org,
frowand.list@gmail.com, m.szyprowski@samsung.com,
linux-rpi-kernel@lists.infradead.org
Subject: [PATCH 1/8] arm64: mm: use arm64_dma_phys_limit instead of calling max_zone_dma_phys()
Date: Wed, 31 Jul 2019 17:47:44 +0200 [thread overview]
Message-ID: <20190731154752.16557-2-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20190731154752.16557-1-nsaenzjulienne@suse.de>
By the time we call zones_sizes_init() arm64_dma_phys_limit already
contains the result of max_zone_dma_phys(). We use the variable instead
of calling the function directly to save some precious cpu time.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
arch/arm64/mm/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index f3c795278def..6112d6c90fa8 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -181,7 +181,7 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
unsigned long max_zone_pfns[MAX_NR_ZONES] = {0};
#ifdef CONFIG_ZONE_DMA32
- max_zone_pfns[ZONE_DMA32] = PFN_DOWN(max_zone_dma_phys());
+ max_zone_pfns[ZONE_DMA32] = PFN_DOWN(arm64_dma_phys_limit);
#endif
max_zone_pfns[ZONE_NORMAL] = max;
--
2.22.0
next prev parent reply other threads:[~2019-07-31 15:48 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-31 15:47 [PATCH 0/8] Raspberry Pi 4 DMA addressing support Nicolas Saenz Julienne
2019-07-31 15:47 ` Nicolas Saenz Julienne [this message]
2019-07-31 15:47 ` [PATCH 2/8] arm64: rename variables used to calculate ZONE_DMA32's size Nicolas Saenz Julienne
2019-07-31 15:47 ` [PATCH 3/8] of/fdt: add function to get the SoC wide DMA addressable memory size Nicolas Saenz Julienne
2019-08-02 17:17 ` Rob Herring
2019-08-05 16:03 ` Nicolas Saenz Julienne
2019-08-05 19:23 ` Rob Herring
2019-08-06 18:12 ` Nicolas Saenz Julienne
2019-08-08 15:02 ` Rob Herring
2019-08-08 17:30 ` Nicolas Saenz Julienne
2019-07-31 15:47 ` [PATCH 4/8] arm64: re-introduce max_zone_dma_phys() Nicolas Saenz Julienne
2019-07-31 15:47 ` [PATCH 5/8] arm64: use ZONE_DMA on DMA addressing limited devices Nicolas Saenz Julienne
2019-07-31 17:07 ` Catalin Marinas
2019-08-01 15:44 ` Nicolas Saenz Julienne
2019-08-01 16:07 ` Robin Murphy
2019-08-01 16:40 ` Nicolas Saenz Julienne
2019-07-31 15:47 ` [PATCH 6/8] dma-direct: turn ARCH_ZONE_DMA_BITS into a variable Nicolas Saenz Julienne
2019-08-01 14:04 ` Christoph Hellwig
2019-08-01 15:59 ` Nicolas Saenz Julienne
2019-07-31 15:47 ` [PATCH 7/8] arm64: update arch_zone_dma_bits to fine tune dma-direct min mask Nicolas Saenz Julienne
2019-07-31 15:47 ` [PATCH 8/8] mm: comment arm64's usage of 'enum zone_type' Nicolas Saenz Julienne
2019-08-01 14:08 ` Christoph Hellwig
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