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| author | Namhyung Kim <namhyung@kernel.org> | 2015-01-16 21:31:28 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-01-21 16:05:44 +0300 |
| commit | de4809999dac44c51e1f9ad892deb0336296dc4e (patch) | |
| tree | 57ed3534953a1245a11048844464002cffeb0a02 /tools/perf/util/symbol.c | |
| parent | 0fb9f2aab738eec9dd9b929ed7d37bf744d2ac77 (diff) | |
| download | linux-de4809999dac44c51e1f9ad892deb0336296dc4e.tar.xz | |
perf symbols: Return the first entry with a given name in find_by_name method
When a dso contains multiple symbols which have same name, current
dso__find_symbol_by_name() only finds an one of them and there's no way
to get the all symbols without going through the rbtree.
So make symbols__find_by_name() return the first entry with the given
name and the next patch in this series will provide a way to iterate
from there, by the name ordered rb_tree, till a suitable symbol is
found.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Link: http://lkml.kernel.org/r/1421234288-22758-2-git-send-email-namhyung@kernel.org
[ Yanked this independent hunk, without changes, from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/symbol.c')
| -rw-r--r-- | tools/perf/util/symbol.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index c24c5b83156c..3cb928e51a99 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -396,6 +396,7 @@ static struct symbol *symbols__find_by_name(struct rb_root *symbols, const char *name) { struct rb_node *n; + struct symbol_name_rb_node *s; if (symbols == NULL) return NULL; @@ -403,7 +404,6 @@ static struct symbol *symbols__find_by_name(struct rb_root *symbols, n = symbols->rb_node; while (n) { - struct symbol_name_rb_node *s; int cmp; s = rb_entry(n, struct symbol_name_rb_node, rb_node); @@ -414,10 +414,24 @@ static struct symbol *symbols__find_by_name(struct rb_root *symbols, else if (cmp > 0) n = n->rb_right; else - return &s->sym; + break; } - return NULL; + if (n == NULL) + return NULL; + + /* return first symbol that has same name (if any) */ + for (n = rb_prev(n); n; n = rb_prev(n)) { + struct symbol_name_rb_node *tmp; + + tmp = rb_entry(n, struct symbol_name_rb_node, rb_node); + if (strcmp(tmp->sym.name, s->sym.name)) + break; + + s = tmp; + } + + return &s->sym; } struct symbol *dso__find_symbol(struct dso *dso, |