[PATCH 1/3] drm/amdgpu: Warn when bad pages approaches 90% threshold

[Kent Russell]

dmesg doesn't warn when the number of bad pages approaches the
threshold for page retirement. WARN when the number of bad pages
is at 90% or greater for easier checks and planning, instead of waiting
until the GPU is full of bad pages.

Cc: Luben Tuikov <luben.tuikov at amd.com>
Cc: Mukul Joshi <Mukul.Joshi at amd.com>
Signed-off-by: Kent Russell <kent.russell at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
index f4c05ff4b26c..8309eea09df3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
@@ -1077,6 +1077,13 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control,
 		if (res)
 			DRM_ERROR("RAS table incorrect checksum or error:%d\n",
 				  res);
+
+		/* Warn if we are at 90% of the threshold or above
+		 */
+		if (10 * control->ras_num_recs >= ras->bad_page_cnt_threshold * 9)
+			dev_warn(adev->dev, "RAS records:%u exceeds 90%% of threshold:%d",
+					control->ras_num_recs,
+					ras->bad_page_cnt_threshold);
 	} else if (hdr->header == RAS_TABLE_HDR_BAD &&
 		   amdgpu_bad_page_threshold != 0) {
 		res = __verify_ras_table_checksum(control);
-- 
2.25.1