From: tip-bot for Arnaldo Carvalho de Melo <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: hpa@zytor.com, wangnan0@huawei.com, namhyung@kernel.org,
dsahern@gmail.com, acme@redhat.com, adrian.hunter@intel.com,
mingo@kernel.org, tglx@linutronix.de,
linux-kernel@vger.kernel.org, jolsa@kernel.org
Subject: [tip:perf/urgent] perf hists: Check if a hist_entry has callchains before using them
Date: Thu, 7 Jun 2018 01:16:59 -0700 [thread overview]
Message-ID: <tip-0sas5cm4dsw2obn75g7ruz69@git.kernel.org> (raw)
Commit-ID: fabd37b837f6e80aedba9ad706b517f5eeea9a50
Gitweb: https://git.kernel.org/tip/fabd37b837f6e80aedba9ad706b517f5eeea9a50
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Tue, 29 May 2018 13:59:24 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 6 Jun 2018 12:52:03 -0300
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>
---
tools/perf/ui/browsers/hists.c | 11 ++++++-----
tools/perf/ui/gtk/hists.c | 5 +++--
tools/perf/ui/hist.c | 2 +-
tools/perf/ui/stdio/hist.c | 4 ++--
tools/perf/util/hist.c | 11 ++++++-----
tools/perf/util/hist.h | 6 ++++++
tools/perf/util/sort.h | 3 +--
7 files changed, 25 insertions(+), 17 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);
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 34864c87cd3c..52e8fda93a47 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -410,7 +410,7 @@ static int hist_entry__init(struct hist_entry *he,
map__get(he->mem_info->daddr.map);
}
- if (symbol_conf.use_callchain)
+ if (hist_entry__has_callchains(he) && symbol_conf.use_callchain)
callchain_init(he->callchain);
if (he->raw_data) {
@@ -492,7 +492,7 @@ static u8 symbol__parent_filter(const struct symbol *parent)
static void hist_entry__add_callchain_period(struct hist_entry *he, u64 period)
{
- if (!symbol_conf.use_callchain)
+ if (!hist_entry__has_callchains(he) || !symbol_conf.use_callchain)
return;
he->hists->callchain_period += period;
@@ -986,7 +986,7 @@ iter_add_next_cumulative_entry(struct hist_entry_iter *iter,
iter->he = he;
he_cache[iter->curr++] = he;
- if (symbol_conf.use_callchain)
+ if (hist_entry__has_callchains(he) && symbol_conf.use_callchain)
callchain_append(he->callchain, &cursor, sample->period);
return 0;
}
@@ -1373,7 +1373,8 @@ static int hists__hierarchy_insert_entry(struct hists *hists,
if (new_he) {
new_he->leaf = true;
- if (symbol_conf.use_callchain) {
+ if (hist_entry__has_callchains(new_he) &&
+ symbol_conf.use_callchain) {
callchain_cursor_reset(&callchain_cursor);
if (callchain_merge(&callchain_cursor,
new_he->callchain,
@@ -1414,7 +1415,7 @@ static int hists__collapse_insert_entry(struct hists *hists,
if (symbol_conf.cumulate_callchain)
he_stat__add_stat(iter->stat_acc, he->stat_acc);
- if (symbol_conf.use_callchain) {
+ if (hist_entry__has_callchains(he) && symbol_conf.use_callchain) {
callchain_cursor_reset(&callchain_cursor);
if (callchain_merge(&callchain_cursor,
iter->callchain,
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index cafafbf2aa9f..06607c434949 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -220,6 +220,12 @@ static inline struct hists *evsel__hists(struct perf_evsel *evsel)
return &hevsel->hists;
}
+static __pure inline bool hists__has_callchains(struct hists *hists)
+{
+ const struct perf_evsel *evsel = hists_to_evsel(hists);
+ return evsel__has_callchain(evsel);
+}
+
int hists__init(void);
int __hists__init(struct hists *hists, struct perf_hpp_list *hpp_list);
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 1a046157bfef..7cf2d5cc038e 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -153,8 +153,7 @@ struct hist_entry {
static __pure inline bool hist_entry__has_callchains(struct hist_entry *he)
{
- const struct perf_evsel *evsel = hists_to_evsel(he->hists);
- return evsel__has_callchain(evsel);
+ return hists__has_callchains(he->hists);
}
static inline bool hist_entry__has_pairs(struct hist_entry *he)
reply other threads:[~2018-06-07 8:17 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=tip-0sas5cm4dsw2obn75g7ruz69@git.kernel.org \
--to=tipbot@zytor.com \
--cc=acme@redhat.com \
--cc=adrian.hunter@intel.com \
--cc=dsahern@gmail.com \
--cc=hpa@zytor.com \
--cc=jolsa@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=namhyung@kernel.org \
--cc=tglx@linutronix.de \
--cc=wangnan0@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.