summaryrefslogtreecommitdiff
path: root/kernel/trace/blktrace.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/trace/blktrace.c')
-rw-r--r--kernel/trace/blktrace.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 8e7c5da3a3e6..c32062bd10b3 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1211,7 +1211,6 @@ static void blk_tracer_print_header(struct seq_file *m)
static void blk_tracer_start(struct trace_array *tr)
{
blk_tracer_enabled = true;
- trace_flags &= ~TRACE_ITER_CONTEXT_INFO;
}
static int blk_tracer_init(struct trace_array *tr)
@@ -1224,7 +1223,6 @@ static int blk_tracer_init(struct trace_array *tr)
static void blk_tracer_stop(struct trace_array *tr)
{
blk_tracer_enabled = false;
- trace_flags |= TRACE_ITER_CONTEXT_INFO;
}
static void blk_tracer_reset(struct trace_array *tr)
@@ -1289,9 +1287,6 @@ out:
static enum print_line_t blk_trace_event_print(struct trace_iterator *iter,
int flags)
{
- if (!trace_print_context(iter))
- return TRACE_TYPE_PARTIAL_LINE;
-
return print_one_line(iter, false);
}
@@ -1326,6 +1321,18 @@ static enum print_line_t blk_tracer_print_line(struct trace_iterator *iter)
return print_one_line(iter, true);
}
+static int blk_tracer_set_flag(u32 old_flags, u32 bit, int set)
+{
+ /* don't output context-info for blk_classic output */
+ if (bit == TRACE_BLK_OPT_CLASSIC) {
+ if (set)
+ trace_flags &= ~TRACE_ITER_CONTEXT_INFO;
+ else
+ trace_flags |= TRACE_ITER_CONTEXT_INFO;
+ }
+ return 0;
+}
+
static struct tracer blk_tracer __read_mostly = {
.name = "blk",
.init = blk_tracer_init,
@@ -1335,6 +1342,7 @@ static struct tracer blk_tracer __read_mostly = {
.print_header = blk_tracer_print_header,
.print_line = blk_tracer_print_line,
.flags = &blk_tracer_flags,
+ .set_flag = blk_tracer_set_flag,
};
static struct trace_event trace_blk_event = {