perf_counter tools: Enable kernel module symbol loading in tools

Add the -m/--modules option to perf report and perf annotate,
which enables live module symbol/image loading. To be used
with -k/--vmlinux.

(Also give perf annotate a -P/--full-paths option.)

Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1246514986.13293.48.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 8 insertions, 1 deletions

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 38d136fedfb9..b44476ca2398 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -46,6 +46,8 @@ static int		dump_trace = 0;
 static int              verbose;
 #define eprintf(x...)   do { if (verbose) fprintf(stderr, x); } while (0)
 
+static int              modules;
+
 static int              full_paths;
 
 static unsigned long    page_size;
@@ -188,7 +190,7 @@ static int load_kernel(void)
         if (!kernel_dso)
                 return -1;
 
-        err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose, 0);
+        err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose, modules);
         if (err <= 0) {
                 dso__delete(kernel_dso);
                 kernel_dso = NULL;
@@ -648,6 +650,9 @@ sort__sym_print(FILE *fp, struct hist_entry *self)
                 ret += fprintf(fp, "[%c] %s",
                         self->dso == kernel_dso ? 'k' :
                         self->dso == hypervisor_dso ? 'h' : '.', self->sym->name);
+
+                if (self->sym->module)
+                        ret += fprintf(fp, "\t[%s]", self->sym->module->name);
         } else {
                 ret += fprintf(fp, "%#016llx", (u64)self->ip);
         }
@@ -1710,6 +1715,8 @@ static const struct option options[] = {
         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
                     "dump raw trace in ASCII"),
         OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
+        OPT_BOOLEAN('m', "modules", &modules,
+                    "load module symbols - WARNING: use only with -k and LIVE kernel"),
         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
                    "sort by key(s): pid, comm, dso, symbol, parent"),
         OPT_BOOLEAN('P', "full-paths", &full_paths,