perf tools: Synthetize the targeted process
authorFrederic Weisbecker <fweisbec@gmail.com>
Wed, 11 Nov 2009 03:51:02 +0000 (04:51 +0100)
committerIngo Molnar <mingo@elte.hu>
Wed, 11 Nov 2009 06:30:17 +0000 (07:30 +0100)
Don't forget to also synthetize the targeted process from perf
record or we'll miss its dso in the events and then we won't be
able to deal with its build-id.

We are missing it because it is created after the existing
synthetized tasks but before the counters are enabled and can
send its mapping event.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
LKML-Reference: <1257911467-28276-1-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
tools/perf/builtin-record.c

index ab333812ace68f80da672dd456b6027ff930e506..9f98b86e747c67142875bc7c6901ed35ac34f495 100644 (file)
@@ -497,13 +497,22 @@ static int __cmd_record(int argc, const char **argv)
        if (target_pid == -1 && argc) {
                pid = fork();
                if (pid < 0)
-                       perror("failed to fork");
+                       die("failed to fork");
 
                if (!pid) {
                        if (execvp(argv[0], (char **)argv)) {
                                perror(argv[0]);
                                exit(-1);
                        }
+               } else {
+                       /*
+                        * Wait a bit for the execv'ed child to appear
+                        * and be updated in /proc
+                        * FIXME: Do you know a less heuristical solution?
+                        */
+                       usleep(1000);
+                       event__synthesize_thread(pid,
+                                                process_synthesized_event);
                }
 
                child_pid = pid;