perf annotate: Own objdump_path and disassembler_style strings

Make struct annotation_options own the strings objdump_path and
disassembler_style, freeing them on exit. Add missing strdup for
disassembler_style when read from a config file.

Committer notes:

Converted free(obj->member) to zfree(&obj->member) in
annotation_options__exit()

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andres Freund <andres@anarazel.de>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Tom Rix <trix@redhat.com>
Cc: llvm@lists.linux.dev
Link: https://lore.kernel.org/r/20230328235543.1082207-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 15 insertions, 2 deletions

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 592eb827fba9..57a273cd03de 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1439,6 +1439,7 @@ int cmd_top(int argc, const char **argv)
 	};
 	struct record_opts *opts = &top.record_opts;
 	struct target *target = &opts->target;
+	const char *disassembler_style = NULL, *objdump_path = NULL;
 	const struct option options[] = {
 	OPT_CALLBACK('e', "event", &top.evlist, "event",
 		     "event selector. use 'perf list' to list available events",
@@ -1524,9 +1525,9 @@ int cmd_top(int argc, const char **argv)
 	OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
 		    "Enable kernel symbol demangling"),
 	OPT_BOOLEAN(0, "no-bpf-event", &top.record_opts.no_bpf_event, "do not record bpf events"),
-	OPT_STRING(0, "objdump", &top.annotation_opts.objdump_path, "path",
+	OPT_STRING(0, "objdump", &objdump_path, "path",
 		    "objdump binary to use for disassembly and annotations"),
-	OPT_STRING('M', "disassembler-style", &top.annotation_opts.disassembler_style, "disassembler style",
+	OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
 		   "Specify disassembler style (e.g. -M intel for intel syntax)"),
 	OPT_STRING(0, "prefix", &top.annotation_opts.prefix, "prefix",
 		    "Add prefix to source file path names in programs (with --prefix-strip)"),
@@ -1618,6 +1619,18 @@ int cmd_top(int argc, const char **argv)
 	if (argc)
 		usage_with_options(top_usage, options);
 
+	if (disassembler_style) {
+		top.annotation_opts.disassembler_style = strdup(disassembler_style);
+		if (!top.annotation_opts.disassembler_style)
+			return -ENOMEM;
+	}
+	if (objdump_path) {
+		top.annotation_opts.objdump_path = strdup(objdump_path);
+		if (!top.annotation_opts.objdump_path)
+			return -ENOMEM;
+	}
+
+
 	status = symbol__validate_sym_arguments();
 	if (status)
 		goto out_delete_evlist;