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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2013-09-12 16:46:51 +0200 |
---|---|---|
committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2013-09-19 13:16:06 +0200 |
commit | 672038b174456ff89d46a5f16ecac90f43e364f3 (patch) | |
tree | 3970a083f83ee0d4e6af96db6f894710c36b837d /cpukit/libfs/src/jffs2/include/linux/rbtree.h | |
parent | JFFS2: Import from Linux (diff) | |
download | rtems-672038b174456ff89d46a5f16ecac90f43e364f3.tar.bz2 |
JFFS2: Import from eCos
Import of Linux compatibility layer and JFFS2 file system support from
eCos.
The files are imported from eCos CVS on 2013-09-16.
cvs -d :pserver:anoncvs@ecos.sourceware.org:/cvs/ecos login
cvs -z3 -d :pserver:anoncvs@ecos.sourceware.org:/cvs/ecos co -P ecos
The files
"ecos/packages/compat/linux/current/asm/atomic.h",
"ecos/packages/compat/linux/current/asm/bug.h",
"ecos/packages/compat/linux/current/asm/page.h",
"ecos/packages/compat/linux/current/cyg/crc/crc.h",
"ecos/packages/compat/linux/current/cyg/infra/cyg_type.h",
"ecos/packages/compat/linux/current/linux/compiler.h",
"ecos/packages/compat/linux/current/linux/completion.h",
"ecos/packages/compat/linux/current/linux/config.h",
"ecos/packages/compat/linux/current/linux/crc32.h",
"ecos/packages/compat/linux/current/linux/errno.h",
"ecos/packages/compat/linux/current/linux/fs.h",
"ecos/packages/compat/linux/current/linux/kernel.h",
"ecos/packages/compat/linux/current/linux/list.h",
"ecos/packages/compat/linux/current/linux/mtd/compatmac.h",
"ecos/packages/compat/linux/current/linux/mtd/mtd.h",
"ecos/packages/compat/linux/current/linux/pagemap.h",
"ecos/packages/compat/linux/current/linux/rbtree.h",
"ecos/packages/compat/linux/current/linux/rwsem.h",
"ecos/packages/compat/linux/current/linux/sched.h",
"ecos/packages/compat/linux/current/linux/slab.h",
"ecos/packages/compat/linux/current/linux/spinlock.h",
"ecos/packages/compat/linux/current/linux/stat.h",
"ecos/packages/compat/linux/current/linux/string.h",
"ecos/packages/compat/linux/current/linux/timer.h",
"ecos/packages/compat/linux/current/linux/types.h",
"ecos/packages/compat/linux/current/linux/version.h",
"ecos/packages/compat/linux/current/linux/vmalloc.h",
"ecos/packages/compat/linux/current/linux/wait.h",
"ecos/packages/compat/linux/current/linux/workqueue.h", and
"ecos/packages/compat/linux/current/linux/zlib.h"
"ecos/packages/compat/linux/current/linux/zutil.h"
are copied to "cpukit/libfs/src/jffs2/include".
The file "ecos/packages/services/crc/current/src/crc32.c" is copied to
"cpukit/libfs/src/jffs2/src/compat-crc32.c".
The file "ecos/packages/compat/linux/current/src/rbtree.c" is copied to
"cpukit/libfs/src/jffs2/src/compat-rbtree.c".
The file "ecos/packages/fs/jffs2/current/src/dir-ecos.c" is copied to
"cpukit/libfs/src/jffs2/src/dir-rtems.c".
The file "ecos/packages/fs/jffs2/current/src/flashio.c" is copied to
"cpukit/libfs/src/jffs2/src/flashio.c".
The file "ecos/packages/fs/jffs2/current/src/fs-ecos.c" is copied to
"cpukit/libfs/src/jffs2/src/fs-rtems.c".
The file "ecos/packages/fs/jffs2/current/src/malloc-ecos.c" is copied to
"cpukit/libfs/src/jffs2/src/malloc-rtems.c".
The file "ecos/packages/fs/jffs2/current/src/os-ecos.h" is copied to
"cpukit/libfs/src/jffs2/src/os-rtems.h".
The LICENSE file referenced in some files of this patch set is part of a
previous patch set imported from Linux.
Diffstat (limited to 'cpukit/libfs/src/jffs2/include/linux/rbtree.h')
-rw-r--r-- | cpukit/libfs/src/jffs2/include/linux/rbtree.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/cpukit/libfs/src/jffs2/include/linux/rbtree.h b/cpukit/libfs/src/jffs2/include/linux/rbtree.h new file mode 100644 index 0000000000..fef5f718d6 --- /dev/null +++ b/cpukit/libfs/src/jffs2/include/linux/rbtree.h @@ -0,0 +1,46 @@ +#ifndef _LINUX_RBTREE_H +#define _LINUX_RBTREE_H + + +struct rb_node { + struct rb_node *rb_left; /* left element */ + struct rb_node *rb_right; /* right element */ + struct rb_node *rb_parent; /* parent element */ + int rb_color; /* node color */ +}; + +struct rb_root { + struct rb_node *rb_node; /* root of the tree */ +}; +#define NULL ((void *)0) +#define RB_ROOT ((struct rb_root){NULL}) +#define rb_entry(p, container, field) \ + ((container *) ((char *)p - ((char *)&(((container *)0)->field)))) + +#define RB_BLACK 0 +#define RB_RED 1 + + +extern void rb_insert_color(struct rb_node *, struct rb_root *); +extern void rb_erase(struct rb_node *, struct rb_root *); + +/* Find logical next and previous nodes in a tree */ +extern struct rb_node *rb_next(struct rb_node *); +extern struct rb_node *rb_prev(struct rb_node *); +extern struct rb_node *rb_first(struct rb_root *); + +/* Fast replacement of a single node without remove/rebalance/add/rebalance */ +extern void rb_replace_node(struct rb_node *victim, struct rb_node *new, + struct rb_root *root); + +static inline void rb_link_node(struct rb_node * node, struct rb_node * parent, + struct rb_node ** rb_link) +{ + node->rb_parent = parent; + node->rb_color = RB_RED; + node->rb_left = node->rb_right = NULL; + + *rb_link = node; +} + +#endif /* _LINUX_RBTREE_H */ |