[tip:perf/urgent] perf annotate: Add support to toggle percent type

From: tip-bot for Jiri Olsa
Date: Sat Aug 18 2018 - 07:34:12 EST

Commit-ID: 3e0d79531984c731951d9a8a5be406df3a78ac97
Gitweb: https://git.kernel.org/tip/3e0d79531984c731951d9a8a5be406df3a78ac97
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Sat, 4 Aug 2018 15:05:17 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 8 Aug 2018 15:55:52 -0300

perf annotate: Add support to toggle percent type

Add new key bindings to toggle percent type/base in annotation UI browser:

'p' to switch between local and global percent type
'b' to switch between hits and perdio percent base

Add the following help messages to the UI browser '?' window:

...
p Toggle percent type [local/global]
b Toggle percent base [period/hits]
...

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Tested-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20180804130521.11408-17-jolsa@xxxxxxxxxx
[ Moved percent_type to be the last arg to sym_title(), its an arg to what is being formmated (buf, size) ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/ui/browsers/annotate.c | 52 ++++++++++++++++++++++++++++++++++++---
tools/perf/util/annotate.h | 16 ++++++++++++
2 files changed, 64 insertions(+), 4 deletions(-)

diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 2a3a34d450d5..1d00e5ec7906 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -15,6 +15,7 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <sys/ttydefaults.h>
+#include <asm/bug.h>

struct disasm_line_samples {
double percent;
@@ -383,9 +384,10 @@ static void ui_browser__init_asm_mode(struct ui_browser *browser)
#define SYM_TITLE_MAX_SIZE (PATH_MAX + 64)

static int sym_title(struct symbol *sym, struct map *map, char *title,
- size_t sz)
+ size_t sz, int percent_type)
{
- return snprintf(title, sz, "%s %s", sym->name, map->dso->long_name);
+ return snprintf(title, sz, "%s %s [Percent: %s]", sym->name, map->dso->long_name,
+ percent_type_str(percent_type));
}

/*
@@ -423,7 +425,7 @@ static bool annotate_browser__callq(struct annotate_browser *browser,

pthread_mutex_unlock(&notes->lock);
symbol__tui_annotate(dl->ops.target.sym, ms->map, evsel, hbt, browser->opts);
- sym_title(ms->sym, ms->map, title, sizeof(title));
+ sym_title(ms->sym, ms->map, title, sizeof(title), browser->opts->percent_type);
ui_browser__show_title(&browser->b, title);
return true;
}
@@ -598,6 +600,7 @@ bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,

static int annotate_browser__show(struct ui_browser *browser, char *title, const char *help)
{
+ struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
struct map_symbol *ms = browser->priv;
struct symbol *sym = ms->sym;
char symbol_dso[SYM_TITLE_MAX_SIZE];
@@ -605,7 +608,7 @@ static int annotate_browser__show(struct ui_browser *browser, char *title, const
if (ui_browser__show(browser, title, help) < 0)
return -1;

- sym_title(sym, ms->map, symbol_dso, sizeof(symbol_dso));
+ sym_title(sym, ms->map, symbol_dso, sizeof(symbol_dso), ab->opts->percent_type);

ui_browser__gotorc_title(browser, 0, 0);
ui_browser__set_color(browser, HE_COLORSET_ROOT);
@@ -613,6 +616,39 @@ static int annotate_browser__show(struct ui_browser *browser, char *title, const
return 0;
}

+static void
+switch_percent_type(struct annotation_options *opts, bool base)
+{
+ switch (opts->percent_type) {
+ case PERCENT_HITS_LOCAL:
+ if (base)
+ opts->percent_type = PERCENT_PERIOD_LOCAL;
+ else
+ opts->percent_type = PERCENT_HITS_GLOBAL;
+ break;
+ case PERCENT_HITS_GLOBAL:
+ if (base)
+ opts->percent_type = PERCENT_PERIOD_GLOBAL;
+ else
+ opts->percent_type = PERCENT_HITS_LOCAL;
+ break;
+ case PERCENT_PERIOD_LOCAL:
+ if (base)
+ opts->percent_type = PERCENT_HITS_LOCAL;
+ else
+ opts->percent_type = PERCENT_PERIOD_GLOBAL;
+ break;
+ case PERCENT_PERIOD_GLOBAL:
+ if (base)
+ opts->percent_type = PERCENT_HITS_GLOBAL;
+ else
+ opts->percent_type = PERCENT_PERIOD_LOCAL;
+ break;
+ default:
+ WARN_ON(1);
+ }
+}
+
static int annotate_browser__run(struct annotate_browser *browser,
struct perf_evsel *evsel,
struct hist_browser_timer *hbt)
@@ -703,6 +739,8 @@ static int annotate_browser__run(struct annotate_browser *browser,
"k Toggle line numbers\n"
"P Print to [symbol_name].annotation file.\n"
"r Run available scripts\n"
+ "p Toggle percent type [local/global]\n"
+ "b Toggle percent base [period/hits]\n"
"? Search string backwards\n");
continue;
case 'r':
@@ -802,6 +840,12 @@ show_sup_ins:
notes->options->show_minmax_cycle = true;
annotation__update_column_widths(notes);
continue;
+ case 'p':
+ case 'b':
+ switch_percent_type(browser->opts, key == 'b');
+ hists__scnprintf_title(hists, title, sizeof(title));
+ annotate_browser__show(&browser->b, title, help);
+ continue;
case K_LEFT:
case K_ESC:
case 'q':
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index 3d4579e68d28..760a6678edff 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -11,6 +11,7 @@
#include <linux/list.h>
#include <linux/rbtree.h>
#include <pthread.h>
+#include <asm/bug.h>

struct ins_ops;

@@ -149,6 +150,21 @@ static inline double annotation_data__percent(struct annotation_data *data,
return which < PERCENT_MAX ? data->percent[which] : -1;
}

+static inline const char *percent_type_str(unsigned int type)
+{
+ static const char *str[PERCENT_MAX] = {
+ "local hits",
+ "global hits",
+ "local period",
+ "global period",
+ };
+
+ if (WARN_ON(type >= PERCENT_MAX))
+ return "N/A";
+
+ return str[type];
+}
+
static inline struct disasm_line *disasm_line(struct annotation_line *al)
{
return al ? container_of(al, struct disasm_line, al) : NULL;