mmiotrace: handle TRACE_PRINT entries
Also make trace_seq_print_cont() non-static, and add a newline if the
seq buffer can't hold all data.
Signed-off-by: Pekka Paalanen <pq@iki.fi>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index 767d1fa..a108c32 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -245,6 +245,27 @@
return 0;
}
+static int mmio_print_mark(struct trace_iterator *iter)
+{
+ struct trace_entry *entry = iter->ent;
+ const char *msg = entry->field.print.buf;
+ struct trace_seq *s = &iter->seq;
+ unsigned long long t = ns2usecs(entry->field.t);
+ unsigned long usec_rem = do_div(t, 1000000ULL);
+ unsigned secs = (unsigned long)t;
+ int ret;
+
+ /* The trailing newline must be in the message. */
+ ret = trace_seq_printf(s, "MARK %lu.%06lu %s", secs, usec_rem, msg);
+ if (!ret)
+ return 0;
+
+ if (entry->field.flags & TRACE_FLAG_CONT)
+ trace_seq_print_cont(s, iter);
+
+ return 1;
+}
+
/* return 0 to abort printing without consuming current entry in pipe mode */
static int mmio_print_line(struct trace_iterator *iter)
{
@@ -253,6 +274,8 @@
return mmio_print_rw(iter);
case TRACE_MMIO_MAP:
return mmio_print_map(iter);
+ case TRACE_PRINT:
+ return mmio_print_mark(iter);
default:
return 1; /* ignore unknown entries */
}