[PATCH] drm/amdgpu: sysfs node disable query error count during gpu reset

[Wang, Yang(Kevin)]

[AMD Official Use Only - AMD Internal Distribution Only]

it is better to apply changes on both ACA and MCA path.

Best Regards,
Kevin

-----Original Message-----
From: Chai, Thomas <YiPeng.Chai at amd.com>
Sent: Friday, June 28, 2024 3:31 PM
To: amd-gfx at lists.freedesktop.org
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>; Zhou1, Tao <Tao.Zhou1 at amd.com>; Li, Candice <Candice.Li at amd.com>; Wang, Yang(Kevin) <KevinYang.Wang at amd.com>; Yang, Stanley <Stanley.Yang at amd.com>; Chai, Thomas <YiPeng.Chai at amd.com>
Subject: [PATCH] drm/amdgpu: sysfs node disable query error count during gpu reset

Sysfs node disable query error count during gpu reset.

Signed-off-by: YiPeng Chai <YiPeng.Chai at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index ac7ded01dad0..ab2e11e1639e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -619,6 +619,7 @@ static const struct file_operations amdgpu_ras_debugfs_eeprom_ops = {  static ssize_t amdgpu_ras_sysfs_read(struct device *dev,
                struct device_attribute *attr, char *buf)  {
+       int ret;
        struct ras_manager *obj = container_of(attr, struct ras_manager, sysfs_attr);
        struct ras_query_if info = {
                .head = obj->head,
@@ -627,7 +628,10 @@ static ssize_t amdgpu_ras_sysfs_read(struct device *dev,
        if (!amdgpu_ras_get_error_query_ready(obj->adev))
                return sysfs_emit(buf, "Query currently inaccessible\n");

-       if (amdgpu_ras_query_error_status(obj->adev, &info))
+       ret = amdgpu_ras_query_error_status(obj->adev, &info);
+       if (ret == -EIO) /* gpu reset is ongoing */
+               return sysfs_emit(buf, "Query currently inaccessible\n");
+       else if (ret)
                return -EINVAL;

        if (amdgpu_ip_version(obj->adev, MP0_HWIP, 0) != IP_VERSION(11, 0, 2) &&
--
2.34.1