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perf_counter tools: Enable kernel module symbol loading in tools

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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>
This commit is contained in:
Mike Galbraith 2009-07-02 08:09:46 +02:00 • committed by Ingo Molnar
parent 6cfcc53ed4
commit 429764873c
3 changed files with 38 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

25
tools/perf/builtin-annotate.c
View file

@ -43,6 +43,10 @@ static int dump_trace = 0;
static int verbose;
static int modules;
static int full_paths;
static int print_line;
static unsigned long page_size;
@ -171,7 +175,7 @@ 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;
@ -1268,19 +1272,25 @@ static void print_summary(char *filename)
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 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
}
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 @@ 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_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()
};