perf_counter: tools: report: Add vmlinux support
Allow to use vmlinux instead of kallsyms.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20090527182100.740018486@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index a9ff49a..3e87cbd 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -19,6 +19,7 @@
#define SHOW_HV 4
static char const *input_name = "perf.data";
+static char *vmlinux = NULL;
static int input;
static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@@ -532,6 +533,39 @@
return -1;
}
+static int load_kernel(void)
+{
+ int fd, nr;
+
+ if (!vmlinux)
+ goto kallsyms;
+
+ fd = open(vmlinux, O_RDONLY);
+ if (fd < 0)
+ goto kallsyms;
+
+ kernel_dso = dso__new("[kernel]");
+ if (!kernel_dso)
+ goto fail_open;
+
+ nr = dso__load_sym(kernel_dso, fd, vmlinux);
+
+ if (nr <= 0)
+ goto fail_load;
+
+ dsos__add(kernel_dso);
+ close(fd);
+
+ return 0;
+
+fail_load:
+ dso__delete(kernel_dso);
+fail_open:
+ close(fd);
+kallsyms:
+ return load_kallsyms();
+}
+
struct map {
struct list_head node;
uint64_t start;
@@ -850,7 +884,7 @@
exit(0);
}
- if (load_kallsyms() < 0) {
+ if (load_kernel() < 0) {
perror("failed to open kallsyms");
return EXIT_FAILURE;
}
@@ -1039,6 +1073,7 @@
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
+ OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
OPT_END()
};