diff options
| author | Lijo Lazar <lijo.lazar@amd.com> | 2023-09-29 11:56:49 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-11-29 16:24:02 -0500 |
| commit | 223aad1be34e1169ee7210bce05726cc5ef1fd66 (patch) | |
| tree | db0b7694a4a8acd1413a9088338e90c1ef2c6fd6 /drivers/gpu/drm/amd/pm | |
| parent | f9a45b76a1883b081fbe15466b11d0264e85d372 (diff) | |
drm/amd/pm: Add sysfs attribute to get pm metrics
Add sysfs attribute to read power management metrics. A snapshot is
captured to the buffer when the attribute is read.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/pm')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/amdgpu_pm.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index ca2ece24e1e0..e1497296afee 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -1799,6 +1799,44 @@ static ssize_t amdgpu_set_apu_thermal_cap(struct device *dev, return count; } +static int amdgpu_pm_metrics_attr_update(struct amdgpu_device *adev, + struct amdgpu_device_attr *attr, + uint32_t mask, + enum amdgpu_device_attr_states *states) +{ + if (amdgpu_dpm_get_pm_metrics(adev, NULL, 0) == -EOPNOTSUPP) + *states = ATTR_STATE_UNSUPPORTED; + + return 0; +} + +static ssize_t amdgpu_get_pm_metrics(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + ssize_t size = 0; + int ret; + + if (amdgpu_in_reset(adev)) + return -EPERM; + if (adev->in_suspend && !adev->in_runpm) + return -EPERM; + + ret = pm_runtime_get_sync(ddev->dev); + if (ret < 0) { + pm_runtime_put_autosuspend(ddev->dev); + return ret; + } + + size = amdgpu_dpm_get_pm_metrics(adev, buf, PAGE_SIZE); + + pm_runtime_mark_last_busy(ddev->dev); + pm_runtime_put_autosuspend(ddev->dev); + + return size; +} + /** * DOC: gpu_metrics * @@ -2096,6 +2134,8 @@ static struct amdgpu_device_attr amdgpu_device_attrs[] = { AMDGPU_DEVICE_ATTR_RW(smartshift_bias, ATTR_FLAG_BASIC, .attr_update = ss_bias_attr_update), AMDGPU_DEVICE_ATTR_RW(xgmi_plpd_policy, ATTR_FLAG_BASIC), + AMDGPU_DEVICE_ATTR_RO(pm_metrics, ATTR_FLAG_BASIC, + .attr_update = amdgpu_pm_metrics_attr_update), }; static int default_attr_update(struct amdgpu_device *adev, struct amdgpu_device_attr *attr, |