Merge branch 'next' into for-linus

Prepare input updates for 3.16.

1 files changed, 25 insertions, 7 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index af47531b82ec..8ce62ef7f6c3 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -374,7 +374,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 
         session = perf_session__new(file, false, NULL);
         if (session == NULL) {
-                pr_err("Not enough memory for reading perf file header\n");
+                pr_err("Perf session creation failed.\n");
                 return -1;
         }
 
@@ -649,7 +649,7 @@ error:
         return ret;
 }
 
-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
 static int get_stack_size(char *str, unsigned long *_size)
 {
         char *endptr;
@@ -675,7 +675,7 @@ static int get_stack_size(char *str, unsigned long *_size)
                max_size, str);
         return -1;
 }
-#endif /* HAVE_LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */
 
 int record_parse_callchain(const char *arg, struct record_opts *opts)
 {
@@ -704,7 +704,7 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
                                        "needed for -g fp\n");
                         break;
 
-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
                 /* Dwarf style */
                 } else if (!strncmp(name, "dwarf", sizeof("dwarf"))) {
                         const unsigned long default_stack_dump_size = 8192;
@@ -720,7 +720,7 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
                                 ret = get_stack_size(tok, &size);
                                 opts->stack_dump_size = size;
                         }
-#endif /* HAVE_LIBUNWIND_SUPPORT */
+#endif /* HAVE_DWARF_UNWIND_SUPPORT */
                 } else {
                         pr_err("callchain: Unknown --call-graph option "
                                "value: %s\n", arg);
@@ -735,7 +735,9 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
 
 static void callchain_debug(struct record_opts *opts)
 {
-        pr_debug("callchain: type %d\n", opts->call_graph);
+        static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF" };
+
+        pr_debug("callchain: type %s\n", str[opts->call_graph]);
 
         if (opts->call_graph == CALLCHAIN_DWARF)
                 pr_debug("callchain: stack dump size %d\n",
@@ -749,6 +751,8 @@ int record_parse_callchain_opt(const struct option *opt,
         struct record_opts *opts = opt->value;
         int ret;
 
+        opts->call_graph_enabled = !unset;
+
         /* --no-call-graph */
         if (unset) {
                 opts->call_graph = CALLCHAIN_NONE;
@@ -769,6 +773,8 @@ int record_callchain_opt(const struct option *opt,
 {
         struct record_opts *opts = opt->value;
 
+        opts->call_graph_enabled = !unset;
+
         if (opts->call_graph == CALLCHAIN_NONE)
                 opts->call_graph = CALLCHAIN_FP;
 
@@ -776,6 +782,16 @@ int record_callchain_opt(const struct option *opt,
         return 0;
 }
 
+static int perf_record_config(const char *var, const char *value, void *cb)
+{
+        struct record *rec = cb;
+
+        if (!strcmp(var, "record.call-graph"))
+                return record_parse_callchain(value, &rec->opts);
+
+        return perf_default_config(var, value, cb);
+}
+
 static const char * const record_usage[] = {
         "perf record [<options>] [<command>]",
         "perf record [<options>] -- <command> [<options>]",
@@ -807,7 +823,7 @@ static struct record record = {
 
 #define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace) recording: "
 
-#ifdef HAVE_LIBUNWIND_SUPPORT
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
 const char record_callchain_help[] = CALLCHAIN_HELP "fp dwarf";
 #else
 const char record_callchain_help[] = CALLCHAIN_HELP "fp";
@@ -907,6 +923,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
         if (rec->evlist == NULL)
                 return -ENOMEM;
 
+        perf_config(perf_record_config, rec);
+
         argc = parse_options(argc, argv, record_options, record_usage,
                             PARSE_OPT_STOP_AT_NON_OPTION);
         if (!argc && target__none(&rec->opts.target))