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drm/amdgpu: save the reset dump register value for devcoredump

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Allocate memory for register value and use the same values for devcoredump.
v1 -> v2: Change krealloc_array() to kmalloc_array()
v2 -> v3: Fix alignment

Signed-off-by: Somalapuram Amaranath <Amaranath.Somalapuram@amd.com>
Reviewed-by: Shashank Sharma <Shashank.sharma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Somalapuram Amaranath 2022-06-02 12:54:58 +05:30 committed by Alex Deucher
parent 6d1044a070
commit 651d7ee63f
3 changed files with 11 additions and 3 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -1044,6 +1044,7 @@ struct amdgpu_device {
/* reset dump register */
uint32_t *reset_dump_reg_list;
uint32_t *reset_dump_reg_value;
int num_regs;
bool scpm_enabled;

7
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
View File

@ -1709,17 +1709,24 @@ static ssize_t amdgpu_reset_dump_register_list_write(struct file *f,
i++;
} while (len < size);
new = kmalloc_array(i, sizeof(uint32_t), GFP_KERNEL);
if (!new) {
ret = -ENOMEM;
goto error_free;
}
ret = down_write_killable(&adev->reset_domain->sem);
if (ret)
goto error_free;
swap(adev->reset_dump_reg_list, tmp);
swap(adev->reset_dump_reg_value, new);
adev->num_regs = i;
up_write(&adev->reset_domain->sem);
ret = size;
error_free:
kfree(tmp);
kfree(new);
return ret;
}

6
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -4666,15 +4666,15 @@ int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev,
static int amdgpu_reset_reg_dumps(struct amdgpu_device *adev)
{
uint32_t reg_value;
int i;
lockdep_assert_held(&adev->reset_domain->sem);
dump_stack();
for (i = 0; i < adev->num_regs; i++) {
reg_value = RREG32(adev->reset_dump_reg_list[i]);
trace_amdgpu_reset_reg_dumps(adev->reset_dump_reg_list[i], reg_value);
adev->reset_dump_reg_value[i] = RREG32(adev->reset_dump_reg_list[i]);
trace_amdgpu_reset_reg_dumps(adev->reset_dump_reg_list[i],
adev->reset_dump_reg_value[i]);
}
return 0;