perf c2c report: Add TUI cacheline browser

Adding simple TUI cacheline browser. It triggers when you press 'd' in
the main browser on the specific cacheline.

It allows to navigate through cacheline's offsets and display callchains
(implemented in following patches).

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-fovjwgyusv3rz5qxk3hnahtl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 34da2a3975b0bc2dc8d168d9c7ff0eeaa31dff7b..1415640c4aca5f8404b00a0f6b2d01902af029a4 100644 (file)
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -1829,6 +1829,84 @@ static void c2c_browser__update_nr_entries(struct hist_browser *hb)
        hb->nr_non_filtered_entries = nr_entries;
 }
 
+struct c2c_cacheline_browser {
+       struct hist_browser      hb;
+       struct hist_entry       *he;
+};
+
+static int
+perf_c2c_cacheline_browser__title(struct hist_browser *browser,
+                                 char *bf, size_t size)
+{
+       struct c2c_cacheline_browser *cl_browser;
+       struct hist_entry *he;
+       uint64_t addr = 0;
+
+       cl_browser = container_of(browser, struct c2c_cacheline_browser, hb);
+       he = cl_browser->he;
+
+       if (he->mem_info)
+               addr = cl_address(he->mem_info->daddr.addr);
+
+       scnprintf(bf, size, "Cacheline 0x%lx", addr);
+       return 0;
+}
+
+static struct c2c_cacheline_browser*
+c2c_cacheline_browser__new(struct hists *hists, struct hist_entry *he)
+{
+       struct c2c_cacheline_browser *browser;
+
+       browser = zalloc(sizeof(*browser));
+       if (browser) {
+               hist_browser__init(&browser->hb, hists);
+               browser->hb.c2c_filter  = true;
+               browser->hb.title       = perf_c2c_cacheline_browser__title;
+               browser->he             = he;
+       }
+
+       return browser;
+}
+
+static int perf_c2c__browse_cacheline(struct hist_entry *he)
+{
+       struct c2c_hist_entry *c2c_he;
+       struct c2c_hists *c2c_hists;
+       struct c2c_cacheline_browser *cl_browser;
+       struct hist_browser *browser;
+       int key = -1;
+
+       c2c_he = container_of(he, struct c2c_hist_entry, he);
+       c2c_hists = c2c_he->hists;
+
+       cl_browser = c2c_cacheline_browser__new(&c2c_hists->hists, he);
+       if (cl_browser == NULL)
+               return -1;
+
+       browser = &cl_browser->hb;
+
+       /* reset abort key so that it can get Ctrl-C as a key */
+       SLang_reset_tty();
+       SLang_init_tty(0, 0, 0);
+
+       c2c_browser__update_nr_entries(browser);
+
+       while (1) {
+               key = hist_browser__run(browser, "help");
+
+               switch (key) {
+               case 'q':
+                       goto out;
+               default:
+                       break;
+               }
+       }
+
+out:
+       free(cl_browser);
+       return 0;
+}
+
 static int perf_c2c_browser__title(struct hist_browser *browser,
                                   char *bf, size_t size)
 {
@@ -1872,6 +1950,9 @@ static int perf_c2c__hists_browse(struct hists *hists)
                switch (key) {
                case 'q':
                        goto out;
+               case 'd':
+                       perf_c2c__browse_cacheline(browser->he_selection);
+                       break;
                default:
                        break;
                }