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authorArnaldo Carvalho de Melo <acme@redhat.com>2018-05-29 13:59:24 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-06-06 12:52:03 -0300
commitfabd37b837f6e80aedba9ad706b517f5eeea9a50 (patch)
tree23e664564b7e09b0ee6f52e34f1ef76b618aed3c /tools/perf/ui
parent0b5d6ece5e6a8b45c4ebbaaf831675b5b605850f (diff)
perf hists: Check if a hist_entry has callchains before using them
So far if we use 'perf record -g' this will make symbol_conf.use_callchain 'true' and logic will assume that all events have callchains enabled, but ever since we added the possibility of setting up callchains for some events (e.g.: -e cycles/call-graph=dwarf/) while not for others, we limit usage scenarios by looking at that symbol_conf.use_callchain global boolean, we better look at each event attributes. On the road to that we need to look if a hist_entry has callchains, that is, to go from hist_entry->hists to the evsel that contains it, to then look at evsel->sample_type for PERF_SAMPLE_CALLCHAIN. The next step is to add a symbol_conf.ignore_callchains global, to use in the places where what we really want to know is if callchains should be ignored, even if present. Then -g will mean just to select a callchain mode to be applied to all events not explicitely setting some other callchain mode, i.e. a default callchain mode, and --no-call-graph will set symbol_conf.ignore_callchains with that clear intention. That too will at some point become a per evsel thing, that tools can set for all or just a few of its evsels. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-0sas5cm4dsw2obn75g7ruz69@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/ui')
-rw-r--r--tools/perf/ui/browsers/hists.c11
-rw-r--r--tools/perf/ui/gtk/hists.c5
-rw-r--r--tools/perf/ui/hist.c2
-rw-r--r--tools/perf/ui/stdio/hist.c4
4 files changed, 12 insertions, 10 deletions
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 22054107f1af..a96f62ca984a 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1231,6 +1231,7 @@ static int hist_browser__show_entry(struct hist_browser *browser,
int width = browser->b.width;
char folded_sign = ' ';
bool current_entry = ui_browser__is_current_entry(&browser->b, row);
+ bool use_callchain = hist_entry__has_callchains(entry) && symbol_conf.use_callchain;
off_t row_offset = entry->row_offset;
bool first = true;
struct perf_hpp_fmt *fmt;
@@ -1240,7 +1241,7 @@ static int hist_browser__show_entry(struct hist_browser *browser,
browser->selection = &entry->ms;
}
- if (symbol_conf.use_callchain) {
+ if (use_callchain) {
hist_entry__init_have_children(entry);
folded_sign = hist_entry__folded(entry);
}
@@ -1276,7 +1277,7 @@ static int hist_browser__show_entry(struct hist_browser *browser,
}
if (first) {
- if (symbol_conf.use_callchain) {
+ if (use_callchain) {
ui_browser__printf(&browser->b, "%c ", folded_sign);
width -= 2;
}
@@ -1583,7 +1584,7 @@ hists_browser__scnprintf_headers(struct hist_browser *browser, char *buf,
int column = 0;
int span = 0;
- if (symbol_conf.use_callchain) {
+ if (hists__has_callchains(hists) && symbol_conf.use_callchain) {
ret = scnprintf(buf, size, " ");
if (advance_hpp_check(&dummy_hpp, ret))
return ret;
@@ -1987,7 +1988,7 @@ static int hist_browser__fprintf_entry(struct hist_browser *browser,
bool first = true;
int ret;
- if (symbol_conf.use_callchain) {
+ if (hist_entry__has_callchains(he) && symbol_conf.use_callchain) {
folded_sign = hist_entry__folded(he);
printed += fprintf(fp, "%c ", folded_sign);
}
@@ -2671,7 +2672,7 @@ static void hist_browser__update_percent_limit(struct hist_browser *hb,
he->nr_rows = 0;
}
- if (!he->leaf || !symbol_conf.use_callchain)
+ if (!he->leaf || !hist_entry__has_callchains(he) || !symbol_conf.use_callchain)
goto next;
if (callchain_param.mode == CHAIN_GRAPH_REL) {
diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index 24e1ec201ffd..b085f1b3e34d 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -382,7 +382,8 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
gtk_tree_store_set(store, &iter, col_idx++, s, -1);
}
- if (symbol_conf.use_callchain && hists__has(hists, sym)) {
+ if (hists__has_callchains(hists) &&
+ symbol_conf.use_callchain && hists__has(hists, sym)) {
if (callchain_param.mode == CHAIN_GRAPH_REL)
total = symbol_conf.cumulate_callchain ?
h->stat_acc->period : h->stat.period;
@@ -479,7 +480,7 @@ static void perf_gtk__add_hierarchy_entries(struct hists *hists,
}
}
- if (symbol_conf.use_callchain && he->leaf) {
+ if (he->leaf && hist_entry__has_callchains(he) && symbol_conf.use_callchain) {
if (callchain_param.mode == CHAIN_GRAPH_REL)
total = symbol_conf.cumulate_callchain ?
he->stat_acc->period : he->stat.period;
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 706f6f1e9c7d..fe3dfaa64a91 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -207,7 +207,7 @@ static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b,
if (ret)
return ret;
- if (a->thread != b->thread || !symbol_conf.use_callchain)
+ if (a->thread != b->thread || !hist_entry__has_callchains(a) || !symbol_conf.use_callchain)
return 0;
ret = b->callchain->max_depth - a->callchain->max_depth;
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index c1eb476da91b..69b7a28f7a1c 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -516,7 +516,7 @@ static int hist_entry__hierarchy_fprintf(struct hist_entry *he,
}
printed += putc('\n', fp);
- if (symbol_conf.use_callchain && he->leaf) {
+ if (he->leaf && hist_entry__has_callchains(he) && symbol_conf.use_callchain) {
u64 total = hists__total_period(hists);
printed += hist_entry_callchain__fprintf(he, total, 0, fp);
@@ -550,7 +550,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
ret = fprintf(fp, "%s\n", bf);
- if (use_callchain)
+ if (hist_entry__has_callchains(he) && use_callchain)
callchain_ret = hist_entry_callchain__fprintf(he, total_period,
0, fp);