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-rw-r--r--kernel/trace/ring_buffer.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index c8ce6bde7fa4..3af77cd47f21 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2008,14 +2008,14 @@ rb_try_to_discard(struct ring_buffer_per_cpu *cpu_buffer,
2008 2008
2009static int 2009static int
2010rb_add_time_stamp(struct ring_buffer_per_cpu *cpu_buffer, 2010rb_add_time_stamp(struct ring_buffer_per_cpu *cpu_buffer,
2011 u64 ts, u64 *delta) 2011 u64 ts, u64 delta)
2012{ 2012{
2013 struct ring_buffer_event *event; 2013 struct ring_buffer_event *event;
2014 int ret; 2014 int ret;
2015 2015
2016 WARN_ONCE(*delta > (1ULL << 59), 2016 WARN_ONCE(delta > (1ULL << 59),
2017 KERN_WARNING "Delta way too big! %llu ts=%llu write stamp = %llu\n", 2017 KERN_WARNING "Delta way too big! %llu ts=%llu write stamp = %llu\n",
2018 (unsigned long long)*delta, 2018 (unsigned long long)delta,
2019 (unsigned long long)ts, 2019 (unsigned long long)ts,
2020 (unsigned long long)cpu_buffer->write_stamp); 2020 (unsigned long long)cpu_buffer->write_stamp);
2021 2021
@@ -2041,8 +2041,8 @@ rb_add_time_stamp(struct ring_buffer_per_cpu *cpu_buffer,
2041 * and if we can't just make it zero. 2041 * and if we can't just make it zero.
2042 */ 2042 */
2043 if (rb_event_index(event)) { 2043 if (rb_event_index(event)) {
2044 event->time_delta = *delta & TS_MASK; 2044 event->time_delta = delta & TS_MASK;
2045 event->array[0] = *delta >> TS_SHIFT; 2045 event->array[0] = delta >> TS_SHIFT;
2046 } else { 2046 } else {
2047 /* try to discard, since we do not need this */ 2047 /* try to discard, since we do not need this */
2048 if (!rb_try_to_discard(cpu_buffer, event)) { 2048 if (!rb_try_to_discard(cpu_buffer, event)) {
@@ -2064,8 +2064,6 @@ rb_add_time_stamp(struct ring_buffer_per_cpu *cpu_buffer,
2064 ret = 0; 2064 ret = 0;
2065 } 2065 }
2066 2066
2067 *delta = 0;
2068
2069 return ret; 2067 return ret;
2070} 2068}
2071 2069
@@ -2175,7 +2173,9 @@ rb_reserve_next_event(struct ring_buffer *buffer,
2175 delta = diff; 2173 delta = diff;
2176 if (unlikely(test_time_stamp(delta))) { 2174 if (unlikely(test_time_stamp(delta))) {
2177 2175
2178 commit = rb_add_time_stamp(cpu_buffer, ts, &delta); 2176 commit = rb_add_time_stamp(cpu_buffer, ts, delta);
2177 delta = 0;
2178
2179 if (commit == -EBUSY) 2179 if (commit == -EBUSY)
2180 goto out_fail; 2180 goto out_fail;
2181 2181