2 files changed, 13 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/timers.c b/drivers/gpu/nvgpu/common/linux/timers.c
index 41b55543..d1aa641f 100644
--- a/drivers/gpu/nvgpu/common/linux/timers.c
+++ b/drivers/gpu/nvgpu/common/linux/timers.c
@@ -243,6 +243,18 @@ s64 nvgpu_current_time_ms(void)
 }
 
 /**
+ * nvgpu_current_time_ns - Time in nanoseconds from a monotonic clock.
+ *
+ * Return a clock in nanosecond units. The start time of the clock is
+ * unspecified; the time returned can be compared with older ones to measure
+ * durations. The source clock does not jump when the system clock is adjusted.
+ */
+s64 nvgpu_current_time_ns(void)
+{
+        return ktime_to_ns(ktime_get());
+}
+
+/**
  * nvgpu_hr_timestamp - Opaque 'high resolution' time stamp.
  *
  * Return a "high resolution" time stamp. It does not really matter exactly what
diff --git a/drivers/gpu/nvgpu/include/nvgpu/timers.h b/drivers/gpu/nvgpu/include/nvgpu/timers.h
index 2e260619..83dd8d78 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/timers.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/timers.h
@@ -109,6 +109,7 @@ void nvgpu_udelay(unsigned int usecs);
  * Timekeeping.
  */
 s64 nvgpu_current_time_ms(void);
+s64 nvgpu_current_time_ns(void);
 u64 nvgpu_hr_timestamp(void);
 
 #endif