tracing: Use trace_iterator_reset() in tracing_read_pipe()

Currently tracing_read_pipe() open codes trace_iterator_reset(). Just have
it use trace_iterator_reset() instead.

Link: https://lkml.kernel.org/r/20211210202616.64d432d2@gandalf.local.home
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 588de6df473f4fe57a9e0ff8c61c8268dbc9b2e0..547d82628c2e2c24771f04cdde6f4c58e744d296 100644 (file)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -6731,10 +6731,9 @@ waitagain:
                cnt = PAGE_SIZE - 1;
 
        /* reset all but tr, trace, and overruns */
-       memset_startat(iter, 0, seq);
+       trace_iterator_reset(iter);
        cpumask_clear(iter->started);
        trace_seq_init(&iter->seq);
-       iter->pos = -1;
 
        trace_event_read_lock();
        trace_access_lock(iter->cpu_file);