lib: bitmap: Introduce node-aware alloc API
Expose new node-aware API for bitmap allocation: bitmap_alloc_node() / bitmap_zalloc_node(). Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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@ -123,6 +123,8 @@ struct device;
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*/
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*/
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unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags);
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unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags);
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unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags);
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unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags);
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unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node);
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unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node);
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void bitmap_free(const unsigned long *bitmap);
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void bitmap_free(const unsigned long *bitmap);
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/* Managed variants of the above. */
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/* Managed variants of the above. */
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13
lib/bitmap.c
13
lib/bitmap.c
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@ -1398,6 +1398,19 @@ unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags)
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}
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}
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EXPORT_SYMBOL(bitmap_zalloc);
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EXPORT_SYMBOL(bitmap_zalloc);
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unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node)
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{
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return kmalloc_array_node(BITS_TO_LONGS(nbits), sizeof(unsigned long),
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flags, node);
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}
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EXPORT_SYMBOL(bitmap_alloc_node);
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unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node)
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{
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return bitmap_alloc_node(nbits, flags | __GFP_ZERO, node);
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}
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EXPORT_SYMBOL(bitmap_zalloc_node);
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void bitmap_free(const unsigned long *bitmap)
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void bitmap_free(const unsigned long *bitmap)
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{
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{
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kfree(bitmap);
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kfree(bitmap);
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