drm/amdgpu/smu: add metrics table lock for arcturus (v2) (1da87c9f) · Commits · 戴 / test

drivers/gpu/drm/amd/powerplay/arcturus_ppt.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -862,18 +862,21 @@ static int arcturus_get_metrics_table(struct smu_context *smu,
	struct smu_table_context *smu_table= &smu->smu_table;		struct smu_table_context *smu_table= &smu->smu_table;
	int ret = 0;		int ret = 0;

			mutex_lock(&smu->metrics_lock);
	if (!smu_table->metrics_time \|\|		if (!smu_table->metrics_time \|\|
	time_after(jiffies, smu_table->metrics_time + HZ / 1000)) {		time_after(jiffies, smu_table->metrics_time + HZ / 1000)) {
	ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, 0,		ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, 0,
	(void *)smu_table->metrics_table, false);		(void *)smu_table->metrics_table, false);
	if (ret) {		if (ret) {
	pr_info("Failed to export SMU metrics table!\n");		pr_info("Failed to export SMU metrics table!\n");
			mutex_unlock(&smu->metrics_lock);
	return ret;		return ret;
	}		}
	smu_table->metrics_time = jiffies;		smu_table->metrics_time = jiffies;
	}		}

	memcpy(metrics_table, smu_table->metrics_table, sizeof(SmuMetrics_t));		memcpy(metrics_table, smu_table->metrics_table, sizeof(SmuMetrics_t));
			mutex_unlock(&smu->metrics_lock);

	return ret;		return ret;
	}		}