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>

diff --git a/tools/perf/arch/common.c b/tools/perf/arch/common.c
index 59dd875..28ac099 100644 (file)
--- a/tools/perf/arch/common.c
+++ b/tools/perf/arch/common.c
@@ -130,7 +130,7 @@ static int lookup_triplets(const char *const *triplets, const char *name)
 }
 
 static int perf_env__lookup_binutils_path(struct perf_env *env,
-                                         const char *name, const char **path)
+                                         const char *name, char **path)
 {
        int idx;
        const char *arch = perf_env__arch(env), *cross_env;
@@ -202,7 +202,7 @@ out_error:
        return -1;
 }
 
-int perf_env__lookup_objdump(struct perf_env *env, const char **path)
+int perf_env__lookup_objdump(struct perf_env *env, char **path)
 {
        /*
         * For live mode, env->arch will be NULL and we can use

diff --git a/tools/perf/arch/common.h b/tools/perf/arch/common.h
index e965ed8..4224c29 100644 (file)
--- a/tools/perf/arch/common.h
+++ b/tools/perf/arch/common.h
@@ -6,7 +6,7 @@
 
 struct perf_env;
 
-int perf_env__lookup_objdump(struct perf_env *env, const char **path);
+int perf_env__lookup_objdump(struct perf_env *env, char **path);
 bool perf_env__single_address_space(struct perf_env *env);
 
 #endif /* ARCH_PERF_COMMON_H */

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 997a1e6..5b31c4e 100644 (file)
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -517,6 +517,7 @@ int cmd_annotate(int argc, const char **argv)
        struct itrace_synth_opts itrace_synth_opts = {
                .set = 0,
        };
+       const char *disassembler_style = NULL, *objdump_path = NULL;
        struct option options[] = {
        OPT_STRING('i', "input", &input_name, "file",
                    "input file name"),
@@ -561,13 +562,13 @@ int cmd_annotate(int argc, const char **argv)
                    "Interleave source code with assembly code (default)"),
        OPT_BOOLEAN(0, "asm-raw", &annotate.opts.show_asm_raw,
                    "Display raw encoding of assembly instructions (default)"),
-       OPT_STRING('M', "disassembler-style", &annotate.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", &annotate.opts.prefix, "prefix",
                    "Add prefix to source file path names in programs (with --prefix-strip)"),
        OPT_STRING(0, "prefix-strip", &annotate.opts.prefix_strip, "N",
                    "Strip first N entries of source file path name in programs (with --prefix)"),
-       OPT_STRING(0, "objdump", &annotate.opts.objdump_path, "path",
+       OPT_STRING(0, "objdump", &objdump_path, "path",
                   "objdump binary to use for disassembly and annotations"),
        OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
                    "Enable symbol demangling"),
@@ -618,6 +619,17 @@ int cmd_annotate(int argc, const char **argv)
                annotate.sym_hist_filter = argv[0];
        }
 
+       if (disassembler_style) {
+               annotate.opts.disassembler_style = strdup(disassembler_style);
+               if (!annotate.opts.disassembler_style)
+                       return -ENOMEM;
+       }
+       if (objdump_path) {
+               annotate.opts.objdump_path = strdup(objdump_path);
+               if (!annotate.opts.objdump_path)
+                       return -ENOMEM;
+       }
+
        if (annotate_check_args(&annotate.opts) < 0)
                return -EINVAL;
 

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index b41e121..15b0cf6 100644 (file)
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -1226,6 +1226,7 @@ int cmd_report(int argc, const char **argv)
        };
        char *sort_order_help = sort_help("sort by key(s):");
        char *field_order_help = sort_help("output field(s): overhead period sample ");
+       const char *disassembler_style = NULL, *objdump_path = NULL;
        const struct option options[] = {
        OPT_STRING('i', "input", &input_name, "file",
                    "input file name"),
@@ -1322,7 +1323,7 @@ int cmd_report(int argc, const char **argv)
                    "Interleave source code with assembly code (default)"),
        OPT_BOOLEAN(0, "asm-raw", &report.annotation_opts.show_asm_raw,
                    "Display raw encoding of assembly instructions (default)"),
-       OPT_STRING('M', "disassembler-style", &report.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", &report.annotation_opts.prefix, "prefix",
                    "Add prefix to source file path names in programs (with --prefix-strip)"),
@@ -1341,7 +1342,7 @@ int cmd_report(int argc, const char **argv)
                    parse_branch_mode),
        OPT_BOOLEAN(0, "branch-history", &branch_call_mode,
                    "add last branch records to call history"),
-       OPT_STRING(0, "objdump", &report.annotation_opts.objdump_path, "path",
+       OPT_STRING(0, "objdump", &objdump_path, "path",
                   "objdump binary to use for disassembly and annotations"),
        OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
                    "Disable symbol demangling"),
@@ -1419,6 +1420,17 @@ int cmd_report(int argc, const char **argv)
                report.symbol_filter_str = argv[0];
        }
 
+       if (disassembler_style) {
+               report.annotation_opts.disassembler_style = strdup(disassembler_style);
+               if (!report.annotation_opts.disassembler_style)
+                       return -ENOMEM;
+       }
+       if (objdump_path) {
+               report.annotation_opts.objdump_path = strdup(objdump_path);
+               if (!report.annotation_opts.objdump_path)
+                       return -ENOMEM;
+       }
+
        if (annotate_check_args(&report.annotation_opts) < 0) {
                ret = -EINVAL;
                goto exit;

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 592eb82..57a273c 100644 (file)
--- 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;

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index a984bda..08e041a 100644 (file)
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -3206,7 +3206,11 @@ static int annotation__config(const char *var, const char *value, void *data)
        } else if (!strcmp(var, "annotate.use_offset")) {
                opt->use_offset = perf_config_bool("use_offset", value);
        } else if (!strcmp(var, "annotate.disassembler_style")) {
-               opt->disassembler_style = value;
+               opt->disassembler_style = strdup(value);
+               if (!opt->disassembler_style) {
+                       pr_err("Not enough memory for annotate.disassembler_style\n");
+                       return -1;
+               }
        } else if (!strcmp(var, "annotate.demangle")) {
                symbol_conf.demangle = perf_config_bool("demangle", value);
        } else if (!strcmp(var, "annotate.demangle_kernel")) {
@@ -3231,8 +3235,10 @@ void annotation_options__init(struct annotation_options *opt)
 }
 
 
-void annotation_options__exit(struct annotation_options *opt __maybe_unused)
+void annotation_options__exit(struct annotation_options *opt)
 {
+       zfree(&opt->disassembler_style);
+       zfree(&opt->objdump_path);
 }
 
 void annotation_config__init(struct annotation_options *opt)

diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index e7238c6..1c6335b 100644 (file)
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -94,8 +94,8 @@ struct annotation_options {
        int  min_pcnt;
        int  max_lines;
        int  context;
-       const char *objdump_path;
-       const char *disassembler_style;
+       char *objdump_path;
+       char *disassembler_style;
        const char *prefix;
        const char *prefix_strip;
        unsigned int percent_type;