[Intel-gfx] [PATCH] RFC drm/i915: Add a sunset clause to GPU hang logging

[Chris Wilson]

If the kernel is old, more than a few releases old, chances are that the
user is using an old kernel for a good reason, despite there being GPU
hangs. After 180days since driver release stop suggesting that they
should send those reports upstream.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/i915_drv.h       | 1 +
 drivers/gpu/drm/i915/i915_gpu_error.c | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0e82f04ac3d6..0719104ebdd5 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -73,6 +73,7 @@
 #define DRIVER_NAME		"i915"
 #define DRIVER_DESC		"Intel Graphics"
 #define DRIVER_DATE		"20161010"
+#define DRIVER_TIMESTAMP	1476452087
 
 #undef WARN_ON
 /* Many gcc seem to no see through this and fall over :( */
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 2275a8d91539..e757783f935b 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1551,6 +1551,8 @@ static int capture(void *data)
 	return 0;
 }
 
+#define DAY_AS_SECONDS(x) (24 * 60 * 60 * (x))
+
 /**
  * i915_capture_error_state - capture an error record for later analysis
  * @dev: drm device
@@ -1603,7 +1605,8 @@ void i915_capture_error_state(struct drm_i915_private *dev_priv,
 		return;
 	}
 
-	if (!warned) {
+	if (!warned &&
+	    ktime_get_real_seconds() - DRIVER_TIMESTAMP < DAY_AS_SECONDS(180)) {
 		DRM_INFO("GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.\n");
 		DRM_INFO("Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel\n");
 		DRM_INFO("drm/i915 developers can then reassign to the right component if it's not a kernel issue.\n");
-- 
2.9.3