diff options
| author | Denys Vlasenko <dvlasenk@redhat.com> | 2015-04-13 13:54:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-05-05 20:48:02 +0200 |
| commit | 0c7965ff22472f60d5cf07308cb59f3a118feb8a (patch) | |
| tree | c0ea628451b884a4fdf1e34c14c491f39f444f76 /arch/x86/kernel/pci-dma.c | |
| parent | c07e5a542e41b87583a8bc0e2849d14bbe919be0 (diff) | |
x86: Deinline dma_alloc_attrs()
Reduces kernel size by 68739 bytes on allyesconfig build:
text data bss dec hex filename
82662736 22255384 20627456 125545576 77bac68 vmlinux0
82594029 22255352 20627456 125476837 77a9fe5 vmlinux1
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Don Dutile <ddutile@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/1428926075-28796-2-git-send-email-dvlasenk@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
| -rw-r--r-- | arch/x86/kernel/pci-dma.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index a25e202bb319..f9f7656e1d41 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -140,6 +140,34 @@ void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr, free_pages((unsigned long)vaddr, get_order(size)); } +void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle, + gfp_t gfp, struct dma_attrs *attrs) +{ + struct dma_map_ops *ops = get_dma_ops(dev); + void *memory; + + gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32); + + if (dma_alloc_from_coherent(dev, size, dma_handle, &memory)) + return memory; + + if (!dev) + dev = &x86_dma_fallback_dev; + + if (!is_device_dma_capable(dev)) + return NULL; + + if (!ops->alloc) + return NULL; + + memory = ops->alloc(dev, size, dma_handle, + dma_alloc_coherent_gfp_flags(dev, gfp), attrs); + debug_dma_alloc_coherent(dev, size, *dma_handle, memory); + + return memory; +} +EXPORT_SYMBOL(dma_alloc_attrs); + /* * See <Documentation/x86/x86_64/boot-options.txt> for the iommu kernel * parameter documentation. |