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tools lib rbtree: pick some improvements from the kernel rbtree code

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The tools/lib/rbtree.c code came from the kernel.  Remove the
EXPORT_SYMBOL() that make sense only there.  Unfortunately it is not being
checked with tools/perf/check_headers.sh.  Will try to remedy this.  Until
then pick the improvements from:

  b0687c1119 ("lib/rbtree: use '+' instead of '|' for setting color.")

That I noticed by doing:

  diff -u tools/lib/rbtree.c lib/rbtree.c
  diff -u tools/include/linux/rbtree_augmented.h include/linux/rbtree_augmented.h

There is one other cases, but lets pick it in separate patches.

Link: https://lkml.kernel.org/r/ZigZzeFoukzRKG1Q@x1
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Noah Goldstein <goldstein.w.n@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Arnaldo Carvalho de Melo 2024-04-23 17:27:57 -03:00 committed by Andrew Morton
parent f492fb3656
commit bbed8b9ffe
2 changed files with 3 additions and 3 deletions
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4
tools/include/linux/rbtree_augmented.h
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@ -158,13 +158,13 @@ RB_DECLARE_CALLBACKS(RBSTATIC, RBNAME, \
static inline void rb_set_parent(struct rb_node *rb, struct rb_node *p)
{
rb->__rb_parent_color = rb_color(rb) | (unsigned long)p;
rb->__rb_parent_color = rb_color(rb) + (unsigned long)p;
}
static inline void rb_set_parent_color(struct rb_node *rb,
struct rb_node *p, int color)
{
rb->__rb_parent_color = (unsigned long)p | color;
rb->__rb_parent_color = (unsigned long)p + color;
}
static inline void

2
tools/lib/rbtree.c
View File

@ -58,7 +58,7 @@
static inline void rb_set_black(struct rb_node *rb)
{
rb->__rb_parent_color |= RB_BLACK;
rb->__rb_parent_color += RB_BLACK;
}
static inline struct rb_node *rb_red_parent(struct rb_node *red)