perf hists browser: Save pstack in the hist_browser

The struct pstack is to save currently applied thread and/or dso filters
in the browser.  So it'd be better to keep in the struct hist_browser.
This is a preparation to later change.

Suggested-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1429687101-4360-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 0847623..26d5548 100644 (file)
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -26,6 +26,7 @@ struct hist_browser {
        struct hist_entry   *he_selection;
        struct map_symbol   *selection;
        struct hist_browser_timer *hbt;
+       struct pstack       *pstack;
        int                  print_seq;
        bool                 show_dso;
        bool                 show_headers;
@@ -1426,7 +1427,6 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
        struct hists *hists = evsel__hists(evsel);
        struct hist_browser *browser = hist_browser__new(hists, hbt);
        struct branch_info *bi;
-       struct pstack *fstack;
 #define MAX_OPTIONS  16
        char *options[MAX_OPTIONS];
        int nr_options = 0;
@@ -1477,8 +1477,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
                hist_browser__update_nr_entries(browser);
        }
 
-       fstack = pstack__new(2);
-       if (fstack == NULL)
+       browser->pstack = pstack__new(2);
+       if (browser->pstack == NULL)
                goto out;
 
        ui_helpline__push(helpline);
@@ -1587,7 +1587,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
                case K_LEFT: {
                        const void *top;
 
-                       if (pstack__empty(fstack)) {
+                       if (pstack__empty(browser->pstack)) {
                                /*
                                 * Go back to the perf_evsel_menu__run or other user
                                 */
@@ -1595,7 +1595,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
                                        goto out_free_stack;
                                continue;
                        }
-                       top = pstack__pop(fstack);
+                       top = pstack__pop(browser->pstack);
                        if (top == &browser->hists->dso_filter)
                                goto zoom_out_dso;
                        if (top == &browser->hists->thread_filter)
@@ -1753,7 +1753,7 @@ do_annotate:
                else if (choice == zoom_dso) {
 zoom_dso:
                        if (browser->hists->dso_filter) {
-                               pstack__remove(fstack, &browser->hists->dso_filter);
+                               pstack__remove(browser->pstack, &browser->hists->dso_filter);
 zoom_out_dso:
                                ui_helpline__pop();
                                browser->hists->dso_filter = NULL;
@@ -1765,14 +1765,14 @@ zoom_out_dso:
                                                   dso->kernel ? "the Kernel" : dso->short_name);
                                browser->hists->dso_filter = dso;
                                perf_hpp__set_elide(HISTC_DSO, true);
-                               pstack__push(fstack, &browser->hists->dso_filter);
+                               pstack__push(browser->pstack, &browser->hists->dso_filter);
                        }
                        hists__filter_by_dso(hists);
                        hist_browser__reset(browser);
                } else if (choice == zoom_thread) {
 zoom_thread:
                        if (browser->hists->thread_filter) {
-                               pstack__remove(fstack, &browser->hists->thread_filter);
+                               pstack__remove(browser->pstack, &browser->hists->thread_filter);
 zoom_out_thread:
                                ui_helpline__pop();
                                thread__zput(browser->hists->thread_filter);
@@ -1783,7 +1783,7 @@ zoom_out_thread:
                                                   thread->tid);
                                browser->hists->thread_filter = thread__get(thread);
                                perf_hpp__set_elide(HISTC_THREAD, false);
-                               pstack__push(fstack, &browser->hists->thread_filter);
+                               pstack__push(browser->pstack, &browser->hists->thread_filter);
                        }
                        hists__filter_by_thread(hists);
                        hist_browser__reset(browser);
@@ -1814,7 +1814,7 @@ do_data_switch:
                }
        }
 out_free_stack:
-       pstack__delete(fstack);
+       pstack__delete(browser->pstack);
 out:
        hist_browser__delete(browser);
        free_popup_options(options, MAX_OPTIONS);