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 4002ccb3675077bbc5c0a784df6f3f0baf32b06a..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
@@ -901,7 +904,7 @@ struct mmap_data {
 
 static unsigned int mmap_read_head(struct mmap_data *md)
 {
-       struct perf_counter_mmap_page *pc = md->base;
+       struct perf_event_mmap_page *pc = md->base;
        int head;
 
        head = pc->data_head;
@@ -977,9 +980,9 @@ static void mmap_read_counter(struct mmap_data *md)
 
                old += size;
 
-               if (event->header.type == PERF_EVENT_SAMPLE) {
+               if (event->header.type == PERF_RECORD_SAMPLE) {
                        int user =
-       (event->header.misc & PERF_EVENT_MISC_CPUMODE_MASK) == PERF_EVENT_MISC_USER;
+       (event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK) == PERF_RECORD_MISC_USER;
                        process_event(event->ip.ip, md->counter, user);
                }
        }
@@ -1005,7 +1008,7 @@ int group_fd;
 
 static void start_counter(int i, int counter)
 {
-       struct perf_counter_attr *attr;
+       struct perf_event_attr *attr;
        int cpu;
 
        cpu = profile_cpu;
@@ -1019,7 +1022,7 @@ static void start_counter(int i, int counter)
        attr->inherit           = (cpu < 0) && inherit;
 
 try_again:
-       fd[i][counter] = sys_perf_counter_open(attr, target_pid, cpu, group_fd, 0);
+       fd[i][counter] = sys_perf_event_open(attr, target_pid, cpu, group_fd, 0);
 
        if (fd[i][counter] < 0) {
                int err = errno;
@@ -1044,7 +1047,7 @@ try_again:
                printf("\n");
                error("perfcounter syscall returned with %d (%s)\n",
                        fd[i][counter], strerror(err));
-               die("No CONFIG_PERF_COUNTERS=y kernel support configured?\n");
+               die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
                exit(-1);
        }
        assert(fd[i][counter] >= 0);