Most users of this interface just want to use it with the default
GFP_KERNEL flags, but for cases where DMA memory is allocated it may
be called from a different context.
No functional change yet, just passing through the flag to the
underlying alloc_contig_range function.
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
arch/powerpc/kvm/book3s_hv_builtin.c | 3 ++-
drivers/base/dma-contiguous.c | 2 +-
include/linux/cma.h | 3 ++-
mm/cma.c | 5 +++--
mm/cma_debug.c | 2 +-
5 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c
index 5bb24be0b346..56a62d97ab2d 100644
--- a/arch/powerpc/kvm/book3s_hv_builtin.c
+++ b/arch/powerpc/kvm/book3s_hv_builtin.c
@@ -56,7 +56,8 @@ struct page *kvm_alloc_hpt(unsigned long nr_pages)
{
VM_BUG_ON(order_base_2(nr_pages) < KVM_CMA_CHUNK_ORDER - PAGE_SHIFT);
- return cma_alloc(kvm_cma, nr_pages, order_base_2(HPT_ALIGN_PAGES));
+ return cma_alloc(kvm_cma, nr_pages, order_base_2(HPT_ALIGN_PAGES),
+ GFP_KERNEL);
}
EXPORT_SYMBOL_GPL(kvm_alloc_hpt);
diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c
index e167a1e1bccb..d1a9cbabc627 100644
--- a/drivers/base/dma-contiguous.c
+++ b/drivers/base/dma-contiguous.c
@@ -193,7 +193,7 @@ struct page *dma_alloc_from_contiguous(struct device *dev, size_t count,
if (align > CONFIG_CMA_ALIGNMENT)
align = CONFIG_CMA_ALIGNMENT;
- return cma_alloc(dev_get_cma_area(dev), count, align);
+ return cma_alloc(dev_get_cma_area(dev), count, align, GFP_KERNEL);
}
/**
diff --git a/include/linux/cma.h b/include/linux/cma.h
index 6f0a91b37f68..03f32d0bd1d8 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -29,6 +29,7 @@ extern int __init cma_declare_contiguous(phys_addr_t base,
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
unsigned int order_per_bit,
struct cma **res_cma);
-extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align);
+extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
+ gfp_t gfp_mask);
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
#endif
diff --git a/mm/cma.c b/mm/cma.c
index fbd67d866f67..a33ddfde315d 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -362,7 +362,8 @@ int __init cma_declare_contiguous(phys_addr_t base,
* This function allocates part of contiguous memory on specific
* contiguous memory area.
*/
-struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align)
+struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
+ gfp_t gfp_mask)
{
unsigned long mask, offset;
unsigned long pfn = -1;
@@ -408,7 +409,7 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align)
pfn = cma->base_pfn + (bitmap_no << cma->order_per_bit);
mutex_lock(&cma_mutex);
ret = alloc_contig_range(pfn, pfn + count, MIGRATE_CMA,
- GFP_KERNEL);
+ gfp_mask);
mutex_unlock(&cma_mutex);
if (ret == 0) {
page = pfn_to_page(pfn);
diff --git a/mm/cma_debug.c b/mm/cma_debug.c
index f8e4b60db167..ffc0c3d0ae64 100644
--- a/mm/cma_debug.c
+++ b/mm/cma_debug.c
@@ -138,7 +138,7 @@ static int cma_alloc_mem(struct cma *cma, int count)
if (!mem)
return -ENOMEM;
- p = cma_alloc(cma, count, 0);
+ p = cma_alloc(cma, count, 0, GFP_KERNEL);
if (!p) {
kfree(mem);
return -ENOMEM;
--
2.11.0
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