linux-kernel - [PATCH -tip 5/8] perf probe: Support vmlinux on cwd by default

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Message-ID: <20091208220309.10142.33040.stgit@dhcp-100-2-132.bos.redhat.com>
Date:	Tue, 08 Dec 2009 17:03:09 -0500
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	lkml <linux-kernel@...r.kernel.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Jim Keniston <jkenisto@...ibm.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Christoph Hellwig <hch@...radead.org>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jason Baron <jbaron@...hat.com>,
	"K.Prasad" <prasad@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: [PATCH -tip 5/8] 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@...hat.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Jim Keniston <jkenisto@...ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@...ibm.com>
Cc: Christoph Hellwig <hch@...radead.org>
Cc: Frank Ch. Eigler <fche@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Jason Baron <jbaron@...hat.com>
Cc: K.Prasad <prasad@...ux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
---

 tools/perf/builtin-probe.c |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 1347fdf..1c97e13 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");


-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America), Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com
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