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perf symbols: Introduce method to iterate symbols ordered by name

tip:perf/core tip-bot for Arnaldo Carvalho de Melo 1 participant 1 message Jan 28, 2015 perf events

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Commit-ID:  18bd726418f2a2e12f85104f0f4b5d5d077e1752
Gitweb:     http://git.kernel.org/tip/18bd726418f2a2e12f85104f0f4b5d5d077e1752
Author:     Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Fri, 16 Jan 2015 15:39:53 -0300
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Wed, 21 Jan 2015 10:05:54 -0300

perf symbols: Introduce method to iterate symbols ordered by name

Given a symbol, go to the next entry in a rbtree sorted by symbol name.

Cc David Ahern <[email protected]>
Cc Jiri Olsa <[email protected]>
Cc Masami Hiramatsu <[email protected]>
Link http://lkml.kernel.org/n/[email protected] open here
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/util/symbol.c | 11 +++++++++++
 tools/perf/util/symbol.h |  1 +
 2 files changed, 12 insertions(+)
tools/perf/util/symbol.c +11 -0
index 3cb928e..a194702 100644
@@ -450,6 +450,17 @@ struct symbol *dso__next_symbol(struct symbol *sym)
 	return symbols__next(sym);
 }
 
+struct symbol *symbol__next_by_name(struct symbol *sym)
+{
+	struct symbol_name_rb_node *s = container_of(sym, struct symbol_name_rb_node, sym);
+	struct rb_node *n = rb_next(&s->rb_node);
+
+	return n ? &rb_entry(n, struct symbol_name_rb_node, rb_node)->sym : NULL;
+}
+
+ /*
+  * Teturns first symbol that matched with @name.
+  */
 struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
 					const char *name)
 {
tools/perf/util/symbol.h +1 -0
index 9d602e9..1650dcb 100644
@@ -231,6 +231,7 @@ struct symbol *dso__find_symbol(struct dso *dso, enum map_type type,
 				u64 addr);
 struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
 					const char *name);
+struct symbol *symbol__next_by_name(struct symbol *sym);
 
 struct symbol *dso__first_symbol(struct dso *dso, enum map_type type);
 struct symbol *dso__next_symbol(struct symbol *sym);