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>
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 8820568..08ea6c5 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -43,6 +43,10 @@
static int verbose;
+static int modules;
+
+static int full_paths;
+
static int print_line;
static unsigned long page_size;
@@ -171,7 +175,7 @@
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;
@@ -1268,19 +1272,25 @@
static void annotate_sym(struct dso *dso, struct symbol *sym)
{
- char *filename = dso->name;
+ char *filename = dso->name, *d_filename;
u64 start, end, len;
char command[PATH_MAX*2];
FILE *file;
if (!filename)
return;
- if (dso == kernel_dso)
+ if (sym->module)
+ filename = sym->module->path;
+ else if (dso == kernel_dso)
filename = vmlinux;
start = sym->obj_start;
if (!start)
start = sym->start;
+ if (full_paths)
+ d_filename = filename;
+ else
+ d_filename = basename(filename);
end = start + sym->end - sym->start + 1;
len = sym->end - sym->start;
@@ -1291,13 +1301,14 @@
}
printf("\n\n------------------------------------------------\n");
- printf(" Percent | Source code & Disassembly of %s\n", filename);
+ printf(" Percent | Source code & Disassembly of %s\n", d_filename);
printf("------------------------------------------------\n");
if (verbose >= 2)
printf("annotating [%p] %30s : [%p] %30s\n", dso, dso->name, sym, sym->name);
- sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", (u64)start, (u64)end, filename);
+ sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s|grep -v %s",
+ (u64)start, (u64)end, filename, filename);
if (verbose >= 3)
printf("doing: %s\n", command);
@@ -1472,8 +1483,12 @@
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_BOOLEAN('l', "print-line", &print_line,
"print matching source lines (may be slow)"),
+ OPT_BOOLEAN('P', "full-paths", &full_paths,
+ "Don't shorten the displayed pathnames"),
OPT_END()
};