[PATCH] drm/amdgpu: Add gpu_recovery parameter

[Liu, Monk]

Andrey

You patch looks breaks the logic for SRIOV, please check function "xgpu_ai_mailbox_flr_work"
This function manually triggers GPU_RECOVER by the will of hypervisor.

Your check of :
+	if (!amdgpu_gpu_recovery) {
+		DRM_INFO("GPU recovery disabled.\n");
+		return 0;
+	}

Actually breaks the SRIOV logic 

I have two idea:
1) Please change to : If (!amdgpu_gpu_recover && !amdgpu_sriov_vf(adev))
2) please add another parameter "force_gpu_recover", and set it to true in driver init stage, and 
  In your check, you can change to: if(!amdgpu_gpu_recovery && !force_gpu_recover)

BR Monk

-----Original Message-----
From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf Of Andrey Grodzovsky
Sent: 2017年12月13日 3:16
To: amd-gfx at lists.freedesktop.org; Koenig, Christian <Christian.Koenig at amd.com>
Cc: Grodzovsky, Andrey <Andrey.Grodzovsky at amd.com>; Liu, Monk <Monk.Liu at amd.com>; maraeo at gmail.com
Subject: [PATCH] drm/amdgpu: Add gpu_recovery parameter

Add new parameter to control GPU recovery procedure.
Retire old way of disabling GPU recovery by setting lockup_timeout == 0 and set default for lockup_timeout to 10s.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 +++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    | 8 ++++++--
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 3735500..26abe03 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -126,6 +126,7 @@ extern int amdgpu_param_buf_per_se;  extern int amdgpu_job_hang_limit;  extern int amdgpu_lbpw;  extern int amdgpu_compute_multipipe;
+extern int amdgpu_gpu_recovery;
 
 #ifdef CONFIG_DRM_AMDGPU_SI
 extern int amdgpu_si_support;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 8d03baa..d84b57a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3030,6 +3030,11 @@ int amdgpu_gpu_recover(struct amdgpu_device *adev, struct amdgpu_job *job)
 		return 0;
 	}
 
+	if (!amdgpu_gpu_recovery) {
+		DRM_INFO("GPU recovery disabled.\n");
+		return 0;
+	}
+
 	dev_info(adev->dev, "GPU reset begin!\n");
 
 	mutex_lock(&adev->lock_reset);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 0b039bd..5c612e9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -90,7 +90,7 @@ int amdgpu_disp_priority = 0;  int amdgpu_hw_i2c = 0;  int amdgpu_pcie_gen2 = -1;  int amdgpu_msi = -1; -int amdgpu_lockup_timeout = 0;
+int amdgpu_lockup_timeout = 10000;
 int amdgpu_dpm = -1;
 int amdgpu_fw_load_type = -1;
 int amdgpu_aspm = -1;
@@ -128,6 +128,7 @@ int amdgpu_param_buf_per_se = 0;  int amdgpu_job_hang_limit = 0;  int amdgpu_lbpw = -1;  int amdgpu_compute_multipipe = -1;
+int amdgpu_gpu_recovery = 1;
 
 MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");  module_param_named(vramlimit, amdgpu_vram_limit, int, 0600); @@ -165,7 +166,7 @@ module_param_named(pcie_gen2, amdgpu_pcie_gen2, int, 0444);  MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");  module_param_named(msi, amdgpu_msi, int, 0444);
 
-MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (default 0 = disable)");
+MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (default 
+10000)");
 module_param_named(lockup_timeout, amdgpu_lockup_timeout, int, 0444);
 
 MODULE_PARM_DESC(dpm, "DPM support (1 = enable, 0 = disable, -1 = auto)"); @@ -280,6 +281,9 @@ module_param_named(lbpw, amdgpu_lbpw, int, 0444);  MODULE_PARM_DESC(compute_multipipe, "Force compute queues to be spread across pipes (1 = enable, 0 = disable, -1 = auto)");  module_param_named(compute_multipipe, amdgpu_compute_multipipe, int, 0444);
 
+MODULE_PARM_DESC(gpu_recovery, "Enable GPU recovery mechanism, (1 = 
+enable (default) , 0 = disable"); module_param_named(gpu_recovery, 
+amdgpu_gpu_recovery, int, 0444);
+
 #ifdef CONFIG_DRM_AMDGPU_SI
 
 #if defined(CONFIG_DRM_RADEON) || defined(CONFIG_DRM_RADEON_MODULE)
--
2.7.4

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