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-rw-r--r--kernel/trace/blktrace.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 95f89faca73..a7f7ff5db38 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -110,7 +110,7 @@ void __trace_note_message(struct blk_trace *bt, const char *fmt, ...)
unsigned long flags;
char *buf;
- if (blk_tr) {
+ if (blk_tracer_enabled) {
va_start(args, fmt);
ftrace_vprintk(fmt, args);
va_end(args);
@@ -169,7 +169,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
pid_t pid;
int cpu, pc = 0;
- if (unlikely(bt->trace_state != Blktrace_running ||
+ if (unlikely(bt->trace_state != Blktrace_running &&
!blk_tracer_enabled))
return;
@@ -185,7 +185,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
return;
cpu = raw_smp_processor_id();
- if (blk_tr) {
+ if (blk_tracer_enabled) {
tracing_record_cmdline(current);
pc = preempt_count();
@@ -235,7 +235,7 @@ record_it:
if (pdu_len)
memcpy((void *) t + sizeof(*t), pdu_data, pdu_len);
- if (blk_tr) {
+ if (blk_tracer_enabled) {
trace_buffer_unlock_commit(blk_tr, event, 0, pc);
return;
}
@@ -267,8 +267,7 @@ int blk_trace_remove(struct request_queue *q)
if (!bt)
return -EINVAL;
- if (bt->trace_state == Blktrace_setup ||
- bt->trace_state == Blktrace_stopped)
+ if (bt->trace_state != Blktrace_running)
blk_trace_cleanup(bt);
return 0;
@@ -1273,7 +1272,6 @@ static int blk_trace_setup_queue(struct request_queue *q, dev_t dev)
bt->dev = dev;
bt->act_mask = (u16)-1;
bt->end_lba = -1ULL;
- bt->trace_state = Blktrace_running;
old_bt = xchg(&q->blk_trace, bt);
if (old_bt != NULL) {