On 2015/03/13 08:20PM, Masami Hiramatsu wrote:

(2015/03/13 5:24), Arnaldo Carvalho de Melo wrote:

quoted

Em Mon, Dec 15, 2014 at 08:20:32PM +0530, Naveen N. Rao escreveu:

quoted

Currently, perf probe considers patterns including a '.' to be a file.
However, this causes problems on powerpc ABIv1 where all functions have
a leading '.':

  $ perf probe -F | grep schedule_timeout_interruptible
  .schedule_timeout_interruptible
  $ perf probe .schedule_timeout_interruptible
  Semantic error :File always requires line number or lazy pattern.
    Error: Command Parse Error.

Fix this by checking the probe pattern in more detail.

Masami, can I have your Acked-by or Reviewed-by?

As far as I can see, this is not enough for fixing that issue.
Could you fold the first half of [4/8] to this patch?

Sure.

I also have some comments on it. See below.

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Signed-off-by: Naveen N. Rao <redacted>
---
 tools/perf/util/probe-event.c | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 28eb141..9943ff3 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c

@@ -999,6 +999,24 @@ static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev)
 		arg = tmp;
 	}
 
+	/*
+	 * Check arg is function or file name and copy it.
+	 *
+	 * We consider arg to be a file spec if and only if it satisfies
+	 * all of the below criteria::
+	 * - it does not include any of "+@%",
+	 * - it includes one of ":;", and
+	 * - it has a period '.' in the name.
+	 *
+	 * Otherwise, we consider arg to be a function specification.
+	 */
+	c = 0;

Oh please, don't reuse 'char c' for a boolean flag, you should
introduce new 'bool file_loc' etc.

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+	if (!strpbrk(arg, "+@%") && (ptr = strpbrk(arg, ";:")) != NULL) {
+		/* This is a file spec if it includes a '.' before ; or : */
+		if (memchr(arg, '.', ptr-arg))

                                        ^^ add spaces around '-'.

Sure.

- Naveen