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Diffstat (limited to 'kernel/trace/trace_mmiotrace.c')
-rw-r--r--kernel/trace/trace_mmiotrace.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index f28484618ff0..e62cbf78eab6 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -18,12 +18,14 @@ struct header_iter {
18 18
19static struct trace_array *mmio_trace_array; 19static struct trace_array *mmio_trace_array;
20static bool overrun_detected; 20static bool overrun_detected;
21static unsigned long prev_overruns;
21 22
22static void mmio_reset_data(struct trace_array *tr) 23static void mmio_reset_data(struct trace_array *tr)
23{ 24{
24 int cpu; 25 int cpu;
25 26
26 overrun_detected = false; 27 overrun_detected = false;
28 prev_overruns = 0;
27 tr->time_start = ftrace_now(tr->cpu); 29 tr->time_start = ftrace_now(tr->cpu);
28 30
29 for_each_online_cpu(cpu) 31 for_each_online_cpu(cpu)
@@ -128,16 +130,12 @@ static void mmio_close(struct trace_iterator *iter)
128 130
129static unsigned long count_overruns(struct trace_iterator *iter) 131static unsigned long count_overruns(struct trace_iterator *iter)
130{ 132{
131 int cpu;
132 unsigned long cnt = 0; 133 unsigned long cnt = 0;
133/* FIXME: */ 134 unsigned long over = ring_buffer_overruns(iter->tr->buffer);
134#if 0 135
135 for_each_online_cpu(cpu) { 136 if (over > prev_overruns)
136 cnt += iter->overrun[cpu]; 137 cnt = over - prev_overruns;
137 iter->overrun[cpu] = 0; 138 prev_overruns = over;
138 }
139#endif
140 (void)cpu;
141 return cnt; 139 return cnt;
142} 140}
143 141