[AMD Official Use Only - Internal Distribution Only]
Hi, Guchun,
It is better to let user be able to change amdgpu_bad_page_threshold with
sysfs, so that users no need to reboot system when they want to change their
strategy.
Best Regards
Dennis Li
-----Original Message-----
From: Chen, Guchun <guchun.c...@amd.com>
Sent: Wednesday, July 22, 2020 11:14 AM
To: amd-gfx@lists.freedesktop.org; Deucher, Alexander
<alexander.deuc...@amd.com>; Zhang, Hawking <hawking.zh...@amd.com>; Li, Dennis
<dennis...@amd.com>; Yang, Stanley <stanley.y...@amd.com>; Zhou1, Tao
<tao.zh...@amd.com>; Clements, John <john.cleme...@amd.com>
Cc: Chen, Guchun <guchun.c...@amd.com>
Subject: [PATCH 1/5] drm/amdgpu: add bad page count threshold in module
parameter
bad_page_threshold could be specified to detect and retire bad GPU if faulty
bad pages exceed it.
When it's -1, ras will use typical bad page failure value.
Signed-off-by: Guchun Chen <guchun.c...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 11 +++++++++++
2 files changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 06bfb8658dec..bb83ffb5e26a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -181,6 +181,7 @@ extern uint amdgpu_dm_abm_level; extern struct
amdgpu_mgpu_info mgpu_info; extern int amdgpu_ras_enable; extern uint
amdgpu_ras_mask;
+extern int amdgpu_bad_page_threshold;
extern int amdgpu_async_gfx_ring;
extern int amdgpu_mcbp;
extern int amdgpu_discovery;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index d28b95f721c4..f99671101746 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -161,6 +161,7 @@ struct amdgpu_mgpu_info mgpu_info = { }; int
amdgpu_ras_enable = -1; uint amdgpu_ras_mask = 0xffffffff;
+int amdgpu_bad_page_threshold = -1;
/**
* DOC: vramlimit (int)
@@ -801,6 +802,16 @@ module_param_named(tmz, amdgpu_tmz, int, 0444);
MODULE_PARM_DESC(reset_method, "GPU reset method (-1 = auto (default), 0 =
legacy, 1 = mode0, 2 = mode1, 3 = mode2, 4 = baco)");
module_param_named(reset_method, amdgpu_reset_method, int, 0444);
+/**
+ * DOC: bad_page_threshold (int)
+ * Bad page threshold configuration is driven by RMA(Return Merchandise
+ * Authorization) policy, which is to specify the threshold value of
+faulty
+ * pages detected by ECC, which may result in GPU's retirement if total
+ * faulty pages by ECC exceed threshold value.
+ */
+MODULE_PARM_DESC(bad_page_threshold, "Bad page threshold(-1 =
+auto(default typical value))"); module_param_named(bad_page_threshold,
+amdgpu_bad_page_threshold, int, 0444);
+
static const struct pci_device_id pciidlist[] = { #ifdef CONFIG_DRM_AMDGPU_SI
{0x1002, 0x6780, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TAHITI},
--
2.17.1
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