perf tools: Move callchain config from record_opts to callchain_param

So that all callchain config parameters can be read/written to a single
place.  It's a preparation to consolidate handling of all callchain
options.

Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Milian Wolff <mail@milianw.de>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1411434104-5307-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

5 files changed, 30 insertions, 38 deletions

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 320b198b54dd..fde0df72beaa 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -652,7 +652,7 @@ static int get_stack_size(char *str, unsigned long *_size)
 }
 #endif /* HAVE_DWARF_UNWIND_SUPPORT */
 
-int record_parse_callchain(const char *arg, struct record_opts *opts)
+int record_parse_callchain(const char *arg)
 {
         char *tok, *name, *saveptr = NULL;
         char *buf;
@@ -672,7 +672,7 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
                 /* Framepointer style */
                 if (!strncmp(name, "fp", sizeof("fp"))) {
                         if (!strtok_r(NULL, ",", &saveptr)) {
-                                opts->call_graph = CALLCHAIN_FP;
+                                callchain_param.record_mode = CALLCHAIN_FP;
                                 ret = 0;
                         } else
                                 pr_err("callchain: No more arguments "
@@ -685,15 +685,15 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
                         const unsigned long default_stack_dump_size = 8192;
 
                         ret = 0;
-                        opts->call_graph = CALLCHAIN_DWARF;
-                        opts->stack_dump_size = default_stack_dump_size;
+                        callchain_param.record_mode = CALLCHAIN_DWARF;
+                        callchain_param.dump_size = default_stack_dump_size;
 
                         tok = strtok_r(NULL, ",", &saveptr);
                         if (tok) {
                                 unsigned long size = 0;
 
                                 ret = get_stack_size(tok, &size);
-                                opts->stack_dump_size = size;
+                                callchain_param.dump_size = size;
                         }
 #endif /* HAVE_DWARF_UNWIND_SUPPORT */
                 } else {
@@ -708,61 +708,56 @@ int record_parse_callchain(const char *arg, struct record_opts *opts)
         return ret;
 }
 
-static void callchain_debug(struct record_opts *opts)
+static void callchain_debug(void)
 {
         static const char *str[CALLCHAIN_MAX] = { "NONE", "FP", "DWARF" };
 
-        pr_debug("callchain: type %s\n", str[opts->call_graph]);
+        pr_debug("callchain: type %s\n", str[callchain_param.record_mode]);
 
-        if (opts->call_graph == CALLCHAIN_DWARF)
+        if (callchain_param.record_mode == CALLCHAIN_DWARF)
                 pr_debug("callchain: stack dump size %d\n",
-                         opts->stack_dump_size);
+                         callchain_param.dump_size);
 }
 
-int record_parse_callchain_opt(const struct option *opt,
+int record_parse_callchain_opt(const struct option *opt __maybe_unused,
                                const char *arg,
                                int unset)
 {
-        struct record_opts *opts = opt->value;
         int ret;
 
-        opts->call_graph_enabled = !unset;
+        callchain_param.enabled = !unset;
 
         /* --no-call-graph */
         if (unset) {
-                opts->call_graph = CALLCHAIN_NONE;
+                callchain_param.record_mode = CALLCHAIN_NONE;
                 pr_debug("callchain: disabled\n");
                 return 0;
         }
 
-        ret = record_parse_callchain(arg, opts);
+        ret = record_parse_callchain(arg);
         if (!ret)
-                callchain_debug(opts);
+                callchain_debug();
 
         return ret;
 }
 
-int record_callchain_opt(const struct option *opt,
+int record_callchain_opt(const struct option *opt __maybe_unused,
                          const char *arg __maybe_unused,
                          int unset __maybe_unused)
 {
-        struct record_opts *opts = opt->value;
+        callchain_param.enabled = true;
 
-        opts->call_graph_enabled = !unset;
+        if (callchain_param.record_mode == CALLCHAIN_NONE)
+                callchain_param.record_mode = CALLCHAIN_FP;
 
-        if (opts->call_graph == CALLCHAIN_NONE)
-                opts->call_graph = CALLCHAIN_FP;
-
-        callchain_debug(opts);
+        callchain_debug();
         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 record_parse_callchain(value);
 
         return perf_default_config(var, value, cb);
 }
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 5c16ba2dcf08..f7003fc0c5f0 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1020,10 +1020,8 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 
 static int perf_top_config(const char *var, const char *value, void *cb)
 {
-        struct perf_top *top = cb;
-
         if (!strcmp(var, "top.call-graph"))
-                return record_parse_callchain(value, &top->record_opts);
+                return record_parse_callchain(value);
         if (!strcmp(var, "top.children")) {
                 symbol_conf.cumulate_callchain = perf_config_bool(var, value);
                 return 0;
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 510c65f72858..220d44e44c1b 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -41,8 +41,6 @@ void pthread__unblock_sigwinch(void);
 
 struct record_opts {
         struct target target;
-        int          call_graph;
-        bool         call_graph_enabled;
         bool         group;
         bool         inherit_stat;
         bool         no_buffering;
@@ -60,7 +58,6 @@ struct record_opts {
         u64          branch_stack;
         u64          default_interval;
         u64          user_interval;
-        u16          stack_dump_size;
         bool         sample_transaction;
         unsigned     initial_delay;
 };
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index da43619d6173..819ae4f61e08 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -54,6 +54,9 @@ enum chain_key {
 };
 
 struct callchain_param {
+        bool                    enabled;
+        enum perf_call_graph_mode record_mode;
+        u32                     dump_size;
         enum chain_mode         mode;
         u32                     print_limit;
         double                  min_percent;
@@ -154,7 +157,7 @@ static inline void callchain_cursor_advance(struct callchain_cursor *cursor)
 struct option;
 struct hist_entry;
 
-int record_parse_callchain(const char *arg, struct record_opts *opts);
+int record_parse_callchain(const char *arg);
 int record_parse_callchain_opt(const struct option *opt, const char *arg, int unset);
 int record_callchain_opt(const struct option *opt, const char *arg, int unset);
 
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index b38de5819323..e0868a901c4a 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -503,20 +503,19 @@ int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size)
 }
 
 static void
-perf_evsel__config_callgraph(struct perf_evsel *evsel,
-                             struct record_opts *opts)
+perf_evsel__config_callgraph(struct perf_evsel *evsel)
 {
         bool function = perf_evsel__is_function_event(evsel);
         struct perf_event_attr *attr = &evsel->attr;
 
         perf_evsel__set_sample_bit(evsel, CALLCHAIN);
 
-        if (opts->call_graph == CALLCHAIN_DWARF) {
+        if (callchain_param.record_mode == CALLCHAIN_DWARF) {
                 if (!function) {
                         perf_evsel__set_sample_bit(evsel, REGS_USER);
                         perf_evsel__set_sample_bit(evsel, STACK_USER);
                         attr->sample_regs_user = PERF_REGS_MASK;
-                        attr->sample_stack_user = opts->stack_dump_size;
+                        attr->sample_stack_user = callchain_param.dump_size;
                         attr->exclude_callchain_user = 1;
                 } else {
                         pr_info("Cannot use DWARF unwind for function trace event,"
@@ -625,8 +624,8 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
                 attr->mmap_data = track;
         }
 
-        if (opts->call_graph_enabled && !evsel->no_aux_samples)
-                perf_evsel__config_callgraph(evsel, opts);
+        if (callchain_param.enabled && !evsel->no_aux_samples)
+                perf_evsel__config_callgraph(evsel);
 
         if (target__has_cpu(&opts->target))
                 perf_evsel__set_sample_bit(evsel, CPU);