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-rw-r--r--tools/perf/ui/browsers/hists.c2
-rw-r--r--tools/perf/ui/hist.c3
-rw-r--r--tools/perf/ui/tui/setup.c26
3 files changed, 28 insertions, 3 deletions
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index e6bb04b5b09b..788506eef567 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -550,7 +550,7 @@ static int hist_browser__show_callchain(struct hist_browser *browser,
bool need_percent;
node = rb_first(root);
- need_percent = !!rb_next(node);
+ need_percent = node && rb_next(node);
while (node) {
struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node);
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index dc0d095f318c..482adae3cc44 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -204,6 +204,9 @@ 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)
+ return 0;
+
ret = b->callchain->max_depth - a->callchain->max_depth;
}
return ret;
diff --git a/tools/perf/ui/tui/setup.c b/tools/perf/ui/tui/setup.c
index 2f612562978c..3c38f25b1695 100644
--- a/tools/perf/ui/tui/setup.c
+++ b/tools/perf/ui/tui/setup.c
@@ -1,5 +1,8 @@
#include <signal.h>
#include <stdbool.h>
+#ifdef HAVE_BACKTRACE_SUPPORT
+#include <execinfo.h>
+#endif
#include "../../util/cache.h"
#include "../../util/debug.h"
@@ -88,6 +91,25 @@ int ui__getch(int delay_secs)
return SLkp_getkey();
}
+#ifdef HAVE_BACKTRACE_SUPPORT
+static void ui__signal_backtrace(int sig)
+{
+ void *stackdump[32];
+ size_t size;
+
+ ui__exit(false);
+ psignal(sig, "perf");
+
+ printf("-------- backtrace --------\n");
+ size = backtrace(stackdump, ARRAY_SIZE(stackdump));
+ backtrace_symbols_fd(stackdump, size, STDOUT_FILENO);
+
+ exit(0);
+}
+#else
+# define ui__signal_backtrace ui__signal
+#endif
+
static void ui__signal(int sig)
{
ui__exit(false);
@@ -122,8 +144,8 @@ int ui__init(void)
ui_browser__init();
tui_progress__init();
- signal(SIGSEGV, ui__signal);
- signal(SIGFPE, ui__signal);
+ signal(SIGSEGV, ui__signal_backtrace);
+ signal(SIGFPE, ui__signal_backtrace);
signal(SIGINT, ui__signal);
signal(SIGQUIT, ui__signal);
signal(SIGTERM, ui__signal);