[PATCH 4.5 175/200] perf hists browser: Fix dump to show correct callchain style

Greg Kroah-Hartman
2016-05-03T00:47:32Z

From: Namhyung Kim <namhyung@kernel.org>

commit 0c841c6c16f320704f75970bbe6a9800c53e6cf5 upstream.

The commit 8c430a348699 ("perf hists browser: Support folded
callchains") missed to update hist_browser__dump() so it always shows
graph-style callchains regardless of current setting.

To fix that, factor out callchain printing code and rename the existing
function which prints graph-style callchain.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: 8c430a348699 ("perf hists browser: Support folded callchains")
Link: http://lkml.kernel.org/r/1453909257-26015-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
tools/perf/ui/browsers/hists.c | 73 +++++++++++++++++++++++------------------
1 file changed, 41 insertions(+), 32 deletions(-)

--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -844,7 +844,7 @@ next:
return row - first_row;
}

-static int hist_browser__show_callchain(struct hist_browser *browser,
+static int hist_browser__show_callchain_graph(struct hist_browser *browser,
struct rb_root *root, int level,
unsigned short row, u64 total,
print_callchain_entry_fn print,
@@ -898,7 +898,7 @@ static int hist_browser__show_callchain(
else
new_total = total;

- row += hist_browser__show_callchain(browser, &child->rb_root,
+ row += hist_browser__show_callchain_graph(browser, &child->rb_root,
new_level, row, new_total,
print, arg, is_output_full);
}
@@ -910,6 +910,43 @@ out:
return row - first_row;
}

+static int hist_browser__show_callchain(struct hist_browser *browser,
+ struct hist_entry *entry, int level,
+ unsigned short row,
+ print_callchain_entry_fn print,
+ struct callchain_print_arg *arg,
+ check_output_full_fn is_output_full)
+{
+ u64 total = hists__total_period(entry->hists);
+ int printed;
+
+ if (callchain_param.mode == CHAIN_GRAPH_REL) {
+ if (symbol_conf.cumulate_callchain)
+ total = entry->stat_acc->period;
+ else
+ total = entry->stat.period;
+ }
+
+ if (callchain_param.mode == CHAIN_FLAT) {
+ printed = hist_browser__show_callchain_flat(browser,
+ &entry->sorted_chain, row, total,
+ print, arg, is_output_full);
+ } else if (callchain_param.mode == CHAIN_FOLDED) {
+ printed = hist_browser__show_callchain_folded(browser,
+ &entry->sorted_chain, row, total,
+ print, arg, is_output_full);
+ } else {
+ printed = hist_browser__show_callchain_graph(browser,
+ &entry->sorted_chain, level, row, total,
+ print, arg, is_output_full);
+ }
+
+ if (arg->is_current_entry)
+ browser->he_selection = entry;
+
+ return printed;
+}
+
struct hpp_arg {
struct ui_browser *b;
char folded_sign;
@@ -1084,38 +1121,14 @@ static int hist_browser__show_entry(stru
--row_offset;

if (folded_sign == '-' && row != browser->b.rows) {
- u64 total = hists__total_period(entry->hists);
struct callchain_print_arg arg = {
.row_offset = row_offset,
.is_current_entry = current_entry,
};

- if (callchain_param.mode == CHAIN_GRAPH_REL) {
- if (symbol_conf.cumulate_callchain)
- total = entry->stat_acc->period;
- else
- total = entry->stat.period;
- }
-
- if (callchain_param.mode == CHAIN_FLAT) {
- printed += hist_browser__show_callchain_flat(browser,
- &entry->sorted_chain, row, total,
- hist_browser__show_callchain_entry, &arg,
- hist_browser__check_output_full);
- } else if (callchain_param.mode == CHAIN_FOLDED) {
- printed += hist_browser__show_callchain_folded(browser,
- &entry->sorted_chain, row, total,
- hist_browser__show_callchain_entry, &arg,
- hist_browser__check_output_full);
- } else {
- printed += hist_browser__show_callchain(browser,
- &entry->sorted_chain, 1, row, total,
+ printed += hist_browser__show_callchain(browser, entry, 1, row,
hist_browser__show_callchain_entry, &arg,
hist_browser__check_output_full);
- }
-
- if (arg.is_current_entry)
- browser->he_selection = entry;
}

return printed;
@@ -1380,15 +1393,11 @@ do_offset:
static int hist_browser__fprintf_callchain(struct hist_browser *browser,
struct hist_entry *he, FILE *fp)
{
- u64 total = hists__total_period(he->hists);
struct callchain_print_arg arg = {
.fp = fp,
};

- if (symbol_conf.cumulate_callchain)
- total = he->stat_acc->period;
-
- hist_browser__show_callchain(browser, &he->sorted_chain, 1, 0, total,
+ hist_browser__show_callchain(browser, he, 1, 0,
hist_browser__fprintf_callchain_entry, &arg,
hist_browser__check_dump_full);
return arg.printed;