perf probe: Ignore vmlinux Build-id when offline vmlinux given

Ignore vmlinux build-id when user gives offline vmlinux if the command
does not affect running kernel.

perf-probe has several actions some of them does not change the running
kernel, like --lines, --vars, and --funcs.

e.g.
-----
$ ./perf probe -k ./vmlinux-arm -V do_sys_open:14
Available variables at do_sys_open:14
@<do_sys_open+202>
char* filename
int dfd
int fd
int flags
struct filename* tmp
struct open_flags op
umode_t mode
-----

Signed-off-by: Masami Hiramatsu <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: http://lkml.kernel.org/r/147222347320.5088.2582658035296667520.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-probe.c

···
 	 */
 	symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
 
+	/*
+	 * Except for --list, --del and --add, other command doesn't depend
+	 * nor change running kernel. So if user gives offline vmlinux,
+	 * ignore its buildid.
+	 */
+	if (!strchr("lda", params.command) && symbol_conf.vmlinux_name)
+		symbol_conf.ignore_vmlinux_buildid = true;
+
 	switch (params.command) {
 	case 'l':
 		if (params.uprobes) {
···
 		}
 		break;
 	case 'D':
-		/*
-		 * If user gives offline vmlinux, ignore buildid, since
-		 * --definition doesn't change running kernel.
-		 */
-		if (symbol_conf.vmlinux_name)
-			symbol_conf.ignore_vmlinux_buildid = true;
-		/* fall through */
 	case 'a':
 
 		/* Ensure the last given target is used */