diff options
| -rw-r--r-- | kernel/trace/trace_hwlat.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c index 44f46bc1140f..a625bfdb844e 100644 --- a/kernel/trace/trace_hwlat.c +++ b/kernel/trace/trace_hwlat.c @@ -182,6 +182,15 @@ void trace_hwlat_callback(bool enter) kdata->nmi_count++; } +/* + * hwlat_err - report a hwlat error. + */ +#define hwlat_err(msg) ({ \ + struct trace_array *tr = hwlat_trace; \ + \ + trace_array_printk_buf(tr->array_buffer.buffer, _THIS_IP_, msg); \ +}) + /** * get_sample - sample the CPU TSC and look for likely hardware latencies * @@ -225,7 +234,7 @@ static int get_sample(void) outer_diff = time_to_us(time_sub(t1, last_t2)); /* This shouldn't happen */ if (outer_diff < 0) { - pr_err(BANNER "time running backwards\n"); + hwlat_err(BANNER "time running backwards\n"); goto out; } if (outer_diff > outer_sample) @@ -237,7 +246,7 @@ static int get_sample(void) /* Check for possible overflows */ if (total < last_total) { - pr_err("Time total overflowed\n"); + hwlat_err("Time total overflowed\n"); break; } last_total = total; @@ -253,7 +262,7 @@ static int get_sample(void) /* This shouldn't happen */ if (diff < 0) { - pr_err(BANNER "time running backwards\n"); + hwlat_err(BANNER "time running backwards\n"); goto out; } |