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![Chris Wilson](/assets/img/avatar_default.png)
lib/interval_tree.c provides a simple interface for an interval-tree (an augmented red-black tree) but is only built when testing the generic macros for building interval-trees. For drivers with modest needs, export the simple interval-tree library as is. v2: Lots of help from Michel Lespinasse to only compile the code as required: - make INTERVAL_TREE a config option - make INTERVAL_TREE_TEST select the library functions and sanitize the filenames & Makefile - prepare interval_tree for being built as a module if required Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Michel Lespinasse <walken@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Michel Lespinasse <walken@google.com> [Acked for inclusion via drm/i915 by Andrew Morton.] [danvet: switch to _GPL as per the mailing list discussion.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
16 lines
495 B
C
16 lines
495 B
C
#include <linux/init.h>
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#include <linux/interval_tree.h>
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#include <linux/interval_tree_generic.h>
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#include <linux/module.h>
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#define START(node) ((node)->start)
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#define LAST(node) ((node)->last)
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INTERVAL_TREE_DEFINE(struct interval_tree_node, rb,
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unsigned long, __subtree_last,
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START, LAST,, interval_tree)
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EXPORT_SYMBOL_GPL(interval_tree_insert);
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EXPORT_SYMBOL_GPL(interval_tree_remove);
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EXPORT_SYMBOL_GPL(interval_tree_iter_first);
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EXPORT_SYMBOL_GPL(interval_tree_iter_next);
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