drm/msm/disp: Tweak display snapshot to match gpu snapshot

Add UTS_RELEASE and show timestamp the same way for consistency.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20211215174524.1742389-2-robdclark@gmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

Author: robclark

drivers/gpu/drm/msm/disp/msm_disp_snapshot.h

@@ -39,7 +39,7 @@
  * @dev: device pointer
  * @drm_dev: drm device pointer
  * @atomic_state: atomic state duplicated at the time of the error
- * @timestamp: timestamp at which the coredump was captured
+ * @time: timestamp at which the coredump was captured
  */
 struct msm_disp_state {
 	struct device *dev;
@@ -49,7 +49,7 @@ struct msm_disp_state {
 
 	struct drm_atomic_state *atomic_state;
 
-	ktime_t timestamp;
+	struct timespec64 time;
 };
 
 /**

drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c

@@ -5,6 +5,8 @@
 
 #define pr_fmt(fmt)	"[drm:%s:%d] " fmt, __func__, __LINE__
 
+#include <generated/utsrelease.h>
+
 #include "msm_disp_snapshot.h"
 
 static void msm_disp_state_dump_regs(u32 **reg, u32 aligned_len, void __iomem *base_addr)
@@ -79,10 +81,11 @@ void msm_disp_state_print(struct msm_disp_state *state, struct drm_printer *p)
 	}
 
 	drm_printf(p, "---\n");
-
+	drm_printf(p, "kernel: " UTS_RELEASE "\n");
 	drm_printf(p, "module: " KBUILD_MODNAME "\n");
 	drm_printf(p, "dpu devcoredump\n");
-	drm_printf(p, "timestamp %lld\n", ktime_to_ns(state->timestamp));
+	drm_printf(p, "time: %lld.%09ld\n",
+		state->time.tv_sec, state->time.tv_nsec);
 
 	list_for_each_entry_safe(block, tmp, &state->blocks, node) {
 		drm_printf(p, "====================%s================\n", block->name);
@@ -100,7 +103,7 @@ static void msm_disp_capture_atomic_state(struct msm_disp_state *disp_state)
 	struct drm_device *ddev;
 	struct drm_modeset_acquire_ctx ctx;
 
-	disp_state->timestamp = ktime_get();
+	ktime_get_real_ts64(&disp_state->time);
 
 	ddev = disp_state->drm_dev;