perf probe: Support function@filename syntax for --line

Since "perf probe --add" supports function@filename syntax, --line
option should also support it.

Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Franck Bui-Huu <fbuihuu@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: linux-kernel@vger.kernel.org
LKML-Reference: <20110210090810.1809.26913.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 12 insertions, 3 deletions

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 9d237e3cff5d..cbd76507a56f 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -595,11 +595,11 @@ static int parse_line_num(char **ptr, int *val, const char *what)
  * The line range syntax is described by:
  *
  *         SRC[:SLN[+NUM|-ELN]]
- *         FNC[:SLN[+NUM|-ELN]]
+ *         FNC[@SRC][:SLN[+NUM|-ELN]]
  */
 int parse_line_range_desc(const char *arg, struct line_range *lr)
 {
-        char *range, *name = strdup(arg);
+        char *range, *file, *name = strdup(arg);
         int err;
 
         if (!name)
@@ -649,7 +649,16 @@ int parse_line_range_desc(const char *arg, struct line_range *lr)
                 }
         }
 
-        if (strchr(name, '.'))
+        file = strchr(name, '@');
+        if (file) {
+                *file = '\0';
+                lr->file = strdup(++file);
+                if (lr->file == NULL) {
+                        err = -ENOMEM;
+                        goto err;
+                }
+                lr->function = name;
+        } else if (strchr(name, '.'))
                 lr->file = name;
         else
                 lr->function = name;