[tip:perfcounters/core] perf annotate: Automatically pick up vmlinux in the local directory

tip-bot for Ingo Molnar
2009-06-06T19:22:28Z

Commit-ID: 39273ee9756917129de3190d469b0b120f87e763
Gitweb: http://git.kernel.org/tip/39273ee9756917129de3190d469b0b120f87e763
Author: Ingo Molnar <mingo@elte.hu>
AuthorDate: Sat, 6 Jun 2009 21:17:03 +0200
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Sat, 6 Jun 2009 21:17:03 +0200

perf annotate: Automatically pick up vmlinux in the local directory

Right now kernel debug info does not get resolved by default, because
we dont know where to look for the vmlinux.

The -k option can be used for that - but if no option is given, pick
up vmlinux files in the current directory - in case a kernel hacker
runs profiling from the source directory that the kernel was built in.

The real solution would be to embedd the location (and perhaps the
date/timestamp) of the vmlinux file in /proc/kallsyms, so that
tools can pick it up automatically.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

---
tools/perf/builtin-annotate.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 4a3c279..80c5aa0 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -26,7 +26,7 @@
#define SHOW_HV 4

static char const *input_name = "perf.data";
-static char *vmlinux = NULL;
+static char *vmlinux = "vmlinux";

static char default_sort_order[] = "comm,symbol";
static char *sort_order = default_sort_order;