perf probe: Support vmlinux on cwd by default

Support vmlinux on current working direcotry by default and
also update file-open messages.
Now perf probe searches ./vmlinux too.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: K.Prasad <prasad@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
LKML-Reference: <20091208220309.10142.33040.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 6 insertions, 4 deletions

diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 1347fdf5337e..1c97e133a3f4 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -43,11 +43,12 @@
 #include "util/probe-event.h"
 
 /* Default vmlinux search paths */
-#define NR_SEARCH_PATH 3
+#define NR_SEARCH_PATH 4
 const char *default_search_path[NR_SEARCH_PATH] = {
 "/lib/modules/%s/build/vmlinux",                /* Custom build kernel */
 "/usr/lib/debug/lib/modules/%s/vmlinux",        /* Red Hat debuginfo */
 "/boot/vmlinux-debug-%s",                       /* Ubuntu */
+"./vmlinux",                                    /* CWD */
 };
 
 #define MAX_PATH_LEN 256
@@ -205,13 +206,14 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
 #else   /* !NO_LIBDWARF */
                 pr_debug("Some probes require debuginfo.\n");
 
-        if (session.vmlinux)
+        if (session.vmlinux) {
+                pr_debug("Try to open %s.", session.vmlinux);
                 fd = open(session.vmlinux, O_RDONLY);
-        else
+        } else
                 fd = open_default_vmlinux();
         if (fd < 0) {
                 if (session.need_dwarf)
-                        die("Could not open vmlinux/module file.");
+                        die("Could not open debuginfo file.");
 
                 pr_debug("Could not open vmlinux/module file."
                          " Try to use symbols.\n");