perf top: Fix --delay_secs 0 division by zero

[firefly-linux-kernel-4.4.55.git] / tools / perf / builtin-top.c

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 1ca88896eee452adbc1425005776f66a13fc9611..a1b1d10912dceae2fcab280d41e03f28a60b3a82 100644 (file)
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -686,6 +686,8 @@ static void handle_keypress(int c)
        switch (c) {
                case 'd':
                        prompt_integer(&delay_secs, "Enter display delay");
+                       if (delay_secs < 1)
+                               delay_secs = 1;
                        break;
                case 'e':
                        prompt_integer(&print_entries, "Enter display entries (lines)");
@@ -782,6 +784,7 @@ static const char *skip_symbols[] = {
        "exit_idle",
        "mwait_idle",
        "mwait_idle_with_hints",
+       "poll_idle",
        "ppc64_runlatch_off",
        "pseries_dedicated_idle_sleep",
        NULL