tracing/ftrace: adapt the boot tracer to the new print_line type

This patch adapts the boot tracer to the new type of the
print_line callback.

It still relays entries it doesn't support to default output
functions.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Pekka Paalanen <pq@iki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 9 insertions, 6 deletions

diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c
index fa8cca1be115..43bde20b95bd 100644
--- a/kernel/trace/trace_boot.c
+++ b/kernel/trace/trace_boot.c
@@ -45,22 +45,25 @@ static void boot_trace_ctrl_update(struct trace_array *tr)
                 stop_boot_trace(tr);
 }
 
-static int initcall_print_line(struct trace_iterator *iter)
+static enum print_line_t initcall_print_line(struct trace_iterator *iter)
 {
-        int ret = 0;
+        int ret;
         struct trace_entry *entry = iter->ent;
         struct trace_boot *field = (struct trace_boot *)entry;
         struct boot_trace *it = &field->initcall;
         struct trace_seq *s = &iter->seq;
 
-        if (entry->type == TRACE_BOOT)
+        if (entry->type == TRACE_BOOT) {
                 ret = trace_seq_printf(s, "%pF called from %i "
                                        "returned %d after %lld msecs\n",
                                        it->func, it->caller, it->result,
                                        it->duration);
-        if (ret)
-                return 1;
-        return 0;
+                if (ret)
+                        return TRACE_TYPE_HANDLED;
+                else
+                        return TRACE_TYPE_PARTIAL_LINE;
+        }
+        return TRACE_TYPE_UNHANDLED;
 }
 
 struct tracer boot_tracer __read_mostly =