From 6e796cb4a972b385aac369718156aa71220c3c4f Mon Sep 17 00:00:00 2001 From: Pierre-Eric Pelloux-Prayer Date: Mon, 16 Sep 2024 16:49:15 +0200 Subject: [PATCH 0342/5403] drm/amd/pm: use pm_runtime_get_if_active for debugfs getters Don't wake up the GPU for reading pm values. Instead, take a runtime powermanagement ref when trying to read it if and only if the GPU is already awake. This avoids spurious wake ups (eg: from applets). We use pm_runtime_get_if_in_active because we care about "is the GPU awake?" not about "is the GPU awake and something else prevents suspend?". Tested-by: Mario Limonciello Reviewed-by: Kenneth Feng Signed-off-by: Pierre-Eric Pelloux-Prayer Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/pm/amdgpu_pm.c | 138 ++++++++++++++--------------- 1 file changed, 69 insertions(+), 69 deletions(-) diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index 9c57f5c81c45..ea940773353c 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -145,9 +145,9 @@ static ssize_t amdgpu_get_power_dpm_state(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; amdgpu_dpm_get_current_power_state(adev, &pm); @@ -268,9 +268,9 @@ static ssize_t amdgpu_get_power_dpm_force_performance_level(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; level = amdgpu_dpm_get_performance_level(adev); @@ -364,9 +364,9 @@ static ssize_t amdgpu_get_pp_num_states(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; if (amdgpu_dpm_get_pp_num_states(adev, &data)) memset(&data, 0, sizeof(data)); @@ -399,9 +399,9 @@ static ssize_t amdgpu_get_pp_cur_state(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; amdgpu_dpm_get_current_power_state(adev, &pm); @@ -526,9 +526,9 @@ static ssize_t amdgpu_get_pp_table(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; size = amdgpu_dpm_get_pp_table(adev, &table); @@ -840,9 +840,9 @@ static ssize_t amdgpu_get_pp_od_clk_voltage(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; for (clk_index = 0 ; clk_index < 6 ; clk_index++) { ret = amdgpu_dpm_emit_clock_levels(adev, od_clocks[clk_index], buf, &size); @@ -930,9 +930,9 @@ static ssize_t amdgpu_get_pp_features(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; size = amdgpu_dpm_get_ppfeature_status(adev, buf); if (size <= 0) @@ -996,9 +996,9 @@ static ssize_t amdgpu_get_pp_dpm_clock(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; ret = amdgpu_dpm_emit_clock_levels(adev, type, buf, &size); if (ret == -ENOENT) @@ -1245,9 +1245,9 @@ static ssize_t amdgpu_get_pp_sclk_od(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; value = amdgpu_dpm_get_sclk_od(adev); @@ -1302,9 +1302,9 @@ static ssize_t amdgpu_get_pp_mclk_od(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; value = amdgpu_dpm_get_mclk_od(adev); @@ -1379,9 +1379,9 @@ static ssize_t amdgpu_get_pp_power_profile_mode(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; size = amdgpu_dpm_get_power_profile_mode(adev, buf); if (size <= 0) @@ -1467,9 +1467,9 @@ static int amdgpu_hwmon_get_sensor_generic(struct amdgpu_device *adev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - r = pm_runtime_resume_and_get(adev->dev); - if (r < 0) - return r; + r = pm_runtime_get_if_active(adev->dev); + if (r <= 0) + return r ?: -EPERM; /* get the sensor value */ r = amdgpu_dpm_read_sensor(adev, sensor, query, &size); @@ -1583,9 +1583,9 @@ static ssize_t amdgpu_get_pcie_bw(struct device *dev, if (!adev->asic_funcs->get_pcie_usage) return -ENODATA; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; amdgpu_asic_get_pcie_usage(adev, &count0, &count1); @@ -1711,9 +1711,9 @@ static ssize_t amdgpu_get_apu_thermal_cap(struct device *dev, struct drm_device *ddev = dev_get_drvdata(dev); struct amdgpu_device *adev = drm_to_adev(ddev); - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; ret = amdgpu_dpm_get_apu_thermal_limit(adev, &limit); if (!ret) @@ -1787,9 +1787,9 @@ static ssize_t amdgpu_get_pm_metrics(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; size = amdgpu_dpm_get_pm_metrics(adev, buf, PAGE_SIZE); @@ -1825,9 +1825,9 @@ static ssize_t amdgpu_get_gpu_metrics(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(ddev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(ddev->dev); + if (ret <= 0) + return ret ?: -EPERM; size = amdgpu_dpm_get_gpu_metrics(adev, &gpu_metrics); if (size <= 0) @@ -2700,9 +2700,9 @@ static ssize_t amdgpu_hwmon_get_pwm1_enable(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(adev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(adev->dev); + if (ret <= 0) + return ret ?: -EPERM; ret = amdgpu_dpm_get_fan_control_mode(adev, &pwm_mode); @@ -2828,9 +2828,9 @@ static ssize_t amdgpu_hwmon_get_pwm1(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - err = pm_runtime_resume_and_get(adev->dev); - if (err < 0) - return err; + err = pm_runtime_get_if_active(adev->dev); + if (err <= 0) + return err ?: -EPERM; err = amdgpu_dpm_get_fan_speed_pwm(adev, &speed); @@ -2855,9 +2855,9 @@ static ssize_t amdgpu_hwmon_get_fan1_input(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - err = pm_runtime_resume_and_get(adev->dev); - if (err < 0) - return err; + err = pm_runtime_get_if_active(adev->dev); + if (err <= 0) + return err ?: -EPERM; err = amdgpu_dpm_get_fan_speed_rpm(adev, &speed); @@ -2916,9 +2916,9 @@ static ssize_t amdgpu_hwmon_get_fan1_target(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - err = pm_runtime_resume_and_get(adev->dev); - if (err < 0) - return err; + err = pm_runtime_get_if_active(adev->dev); + if (err <= 0) + return err ?: -EPERM; err = amdgpu_dpm_get_fan_speed_rpm(adev, &rpm); @@ -2986,9 +2986,9 @@ static ssize_t amdgpu_hwmon_get_fan1_enable(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(adev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(adev->dev); + if (ret <= 0) + return ret ?: -EPERM; ret = amdgpu_dpm_get_fan_control_mode(adev, &pwm_mode); @@ -3153,9 +3153,9 @@ static ssize_t amdgpu_hwmon_show_power_cap_generic(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - r = pm_runtime_resume_and_get(adev->dev); - if (r < 0) - return r; + r = pm_runtime_get_if_active(adev->dev); + if (r <= 0) + return r ?: -EPERM; r = amdgpu_dpm_get_power_limit(adev, &limit, pp_limit_level, power_type); @@ -3687,9 +3687,9 @@ static int amdgpu_retrieve_od_settings(struct amdgpu_device *adev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - ret = pm_runtime_resume_and_get(adev->dev); - if (ret < 0) - return ret; + ret = pm_runtime_get_if_active(adev->dev); + if (ret <= 0) + return ret ?: -EPERM; size = amdgpu_dpm_print_clock_levels(adev, od_type, buf); if (size == 0) -- 2.54.0