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| author | Lucas Stach <l.stach@pengutronix.de> | 2017-02-25 01:58:41 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-25 04:46:55 +0300 |
| commit | e2f466e32f56c8b3ee0d1a40cc39e1c779dfd598 (patch) | |
| tree | f37685b18f07689ed884b912f226b9a19c320e7a /mm | |
| parent | ca96b625341027f611c3e61351a70311077ebcf5 (diff) | |
| download | linux-e2f466e32f56c8b3ee0d1a40cc39e1c779dfd598.tar.xz | |
mm: cma_alloc: allow to specify GFP mask
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.
Link: http://lkml.kernel.org/r/20170127172328.18574-2-l.stach@pengutronix.de
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Radim Krcmar <rkrcmar@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Alexander Graf <agraf@suse.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/cma.c | 5 | ||||
| -rw-r--r-- | mm/cma_debug.c | 2 |
2 files changed, 4 insertions, 3 deletions
@@ -357,7 +357,8 @@ err: * 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; @@ -403,7 +404,7 @@ 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; |