From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: catalin.marinas@arm.com, hch@lst.de, wahrenst@gmx.net,
marc.zyngier@arm.com, robh+dt@kernel.org,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: f.fainelli@gmail.com, will@kernel.org, robin.murphy@arm.com,
nsaenzjulienne@suse.de, mbrugger@suse.com,
linux-rpi-kernel@lists.infradead.org, phill@raspberrypi.org,
m.szyprowski@samsung.com
Subject: [PATCH v4 1/4] arm64: mm: use arm64_dma_phys_limit instead of calling max_zone_dma_phys()
Date: Fri, 6 Sep 2019 14:06:12 +0200 [thread overview]
Message-ID: <20190906120617.18836-2-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20190906120617.18836-1-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>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
---
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;
--
2.23.0
next prev parent reply other threads:[~2019-09-06 12:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-06 12:06 [PATCH v4 0/4] Raspberry Pi 4 DMA addressing support Nicolas Saenz Julienne
2019-09-06 12:06 ` Nicolas Saenz Julienne [this message]
2019-09-06 12:06 ` [PATCH v4 2/4] arm64: rename variables used to calculate ZONE_DMA32's size Nicolas Saenz Julienne
2019-09-06 12:06 ` [PATCH v4 3/4] arm64: use both ZONE_DMA and ZONE_DMA32 Nicolas Saenz Julienne
2019-09-08 21:27 ` Catalin Marinas
2019-09-09 8:46 ` Nicolas Saenz Julienne
2019-09-06 12:06 ` [PATCH v4 4/4] mm: refresh ZONE_DMA and ZONE_DMA32 comments in 'enum zone_type' Nicolas Saenz Julienne
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