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drm/amdkfd: Add kernel parameter to stop queue eviction on vm fault 

This is to keep wavefront context for debug purpose

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Oak Zeng 2020-06-22 19:27:45 -05:00 committed by Alex Deucher
parent 2f669734f3
commit 6d909c5da0
4 changed files with 18 additions and 4 deletions
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7
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@ -751,6 +751,13 @@ bool no_system_mem_limit;
module_param(no_system_mem_limit, bool, 0644);
MODULE_PARM_DESC(no_system_mem_limit, "disable system memory limit (false = default)");
/**
* DOC: no_queue_eviction_on_vm_fault (int)
* If set, process queues will not be evicted on gpuvm fault. This is to keep the wavefront context for debugging (0 = queue eviction, 1 = no queue eviction). The default is 0 (queue eviction).
*/
int amdgpu_no_queue_eviction_on_vm_fault = 0;
MODULE_PARM_DESC(no_queue_eviction_on_vm_fault, "No queue eviction on VM fault (0 = queue eviction, 1 = no queue eviction)");
module_param_named(no_queue_eviction_on_vm_fault, amdgpu_no_queue_eviction_on_vm_fault, int, 0444);
#endif
/**

5
drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c
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@ -80,8 +80,9 @@ static bool cik_event_interrupt_isr(struct kfd_dev *dev,
ihre->source_id == CIK_INTSRC_SDMA_TRAP ||
ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE ||
ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT;
((ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) &&
!amdgpu_no_queue_eviction_on_vm_fault);
}
static void cik_event_interrupt_wq(struct kfd_dev *dev,

5
drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
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@ -98,9 +98,10 @@ static bool event_interrupt_isr_v9(struct kfd_dev *dev,
source_id == SOC15_INTSRC_SDMA_TRAP ||
source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG ||
source_id == SOC15_INTSRC_CP_BAD_OPCODE ||
client_id == SOC15_IH_CLIENTID_VMC ||
((client_id == SOC15_IH_CLIENTID_VMC ||
client_id == SOC15_IH_CLIENTID_VMC1 ||
client_id == SOC15_IH_CLIENTID_UTCL2;
client_id == SOC15_IH_CLIENTID_UTCL2) &&
!amdgpu_no_queue_eviction_on_vm_fault);
}
static void event_interrupt_wq_v9(struct kfd_dev *dev,

5
drivers/gpu/drm/amd/amdkfd/kfd_priv.h
View File

@ -169,6 +169,11 @@ extern bool hws_gws_support;
/* Queue preemption timeout in ms */
extern int queue_preemption_timeout_ms;
/*
* Don't evict process queues on vm fault
*/
extern int amdgpu_no_queue_eviction_on_vm_fault;
/* Enable eviction debug messages */
extern bool debug_evictions;