Changeset 679 for GPL/trunk/include/linux/gfp.h

Timestamp:

Mar 18, 2021, 8:57:36 PM (4 years ago)

Author:

David Azarewicz

Message:

Merge changes from Paul's uniaud32next branch.

Location:

GPL/trunk

Files:

• . (modified) (1 prop)
• include/linux/gfp.h (modified) (1 diff)

GPL/trunk/include/linux/gfp.h

@@ -1 +1 @@
 #ifndef __LINUX_GFP_H
 #define __LINUX_GFP_H
+
+#include <asm/page.h>
+#include <linux/export.h>
+#include <linux/mm.h>
+#include <linux/types.h>
+
+/* Plain integer GFP bitmasks. Do not use this directly. */
+#define ___GFP_DMA              0x01u
+#define ___GFP_HIGHMEM          0x02u
+#define ___GFP_DMA32            0x04u
+#define ___GFP_MOVABLE          0x08u
+#define ___GFP_RECLAIMABLE      0x10u
+#define ___GFP_HIGH             0x20u
+#define ___GFP_IO               0x40u
+#define ___GFP_FS               0x80u
+#define ___GFP_ZERO             0x100u
+#define ___GFP_ATOMIC           0x200u
+#define ___GFP_DIRECT_RECLAIM   0x400u
+#define ___GFP_KSWAPD_RECLAIM   0x800u
+#define ___GFP_WRITE            0x1000u
+#define ___GFP_NOWARN           0x2000u
+#define ___GFP_RETRY_MAYFAIL    0x4000u
+#define ___GFP_NOFAIL           0x8000u
+#define ___GFP_NORETRY          0x10000u
+#define ___GFP_MEMALLOC         0x20000u
+#define ___GFP_COMP             0x40000u
+#define ___GFP_NOMEMALLOC       0x80000u
+#define ___GFP_HARDWALL         0x100000u
+#define ___GFP_THISNODE         0x200000u
+#define ___GFP_ACCOUNT          0x400000u
+#ifdef CONFIG_LOCKDEP
+#define ___GFP_NOLOCKDEP        0x800000u
+#else
+#define ___GFP_NOLOCKDEP        0
+#endif
+/* If the above are modified, __GFP_BITS_SHIFT may need updating */
+
+#define __GFP_NORETRY   0
+#define __GFP_NOWARN    ((__force gfp_t)___GFP_NOWARN)
+#define __GFP_COMP      ((__force gfp_t)___GFP_COMP)
+#define __GFP_ZERO      ((__force gfp_t)___GFP_ZERO)
+#define __GFP_RETRY_MAYFAIL     ((__force gfp_t)___GFP_RETRY_MAYFAIL)
 #define GFP_DMA32 0             /* driver must check for 32-bit address */
-#define __GFP_COMP      0
-#define __GFP_NOWARN    0
-#define __GFP_NORETRY   0
+
+/*
+ * Physical address zone modifiers (see linux/mmzone.h - low four bits)
+ *
+ * Do not put any conditional on these. If necessary modify the definitions
+ * without the underscores and use them consistently. The definitions here may
+ * be used in bit comparisons.
+ */
+#define __GFP_DMA       ((__force gfp_t)___GFP_DMA)
+#define __GFP_HIGHMEM   ((__force gfp_t)___GFP_HIGHMEM)
+#define __GFP_DMA32     ((__force gfp_t)___GFP_DMA32)
+#define __GFP_MOVABLE   ((__force gfp_t)___GFP_MOVABLE)  /* ZONE_MOVABLE allowed */
+#define GFP_ZONEMASK    (__GFP_DMA|__GFP_HIGHMEM|__GFP_DMA32|__GFP_MOVABLE)
+void *alloc_pages_exact(size_t size, gfp_t gfp_mask);
+void free_pages_exact(void *virt, size_t size);
+
 #endif /* __LINUX_GFP_H */