4 files changed, 61 insertions, 71 deletions

diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index dc459eb1246b..d14fc2e67f93 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -47,6 +47,9 @@ armpmu_map_cache_event(const unsigned (*cache_map)
 	if (cache_result >= PERF_COUNT_HW_CACHE_RESULT_MAX)
 		return -EINVAL;
 
+	if (!cache_map)
+		return -ENOENT;
+
 	ret = (int)(*cache_map)[cache_type][cache_op][cache_result];
 
 	if (ret == CACHE_OP_UNSUPPORTED)
@@ -63,6 +66,9 @@ armpmu_map_hw_event(const unsigned (*event_map)[PERF_COUNT_HW_MAX], u64 config)
 	if (config >= PERF_COUNT_HW_MAX)
 		return -EINVAL;
 
+	if (!event_map)
+		return -ENOENT;
+
 	mapping = (*event_map)[config];
 	return mapping == HW_OP_UNSUPPORTED ? -ENOENT : mapping;
 }
@@ -569,22 +575,41 @@ int armpmu_request_irq(struct arm_pmu *armpmu, int cpu)
 		if (irq != other_irq) {
 			pr_warn("mismatched PPIs detected.\n");
 			err = -EINVAL;
+			goto err_out;
 		}
 	} else {
-		err = request_irq(irq, handler,
-				  IRQF_NOBALANCING | IRQF_NO_THREAD, "arm-pmu",
+		struct arm_pmu_platdata *platdata = armpmu_get_platdata(armpmu);
+		unsigned long irq_flags;
+
+		err = irq_force_affinity(irq, cpumask_of(cpu));
+
+		if (err && num_possible_cpus() > 1) {
+			pr_warn("unable to set irq affinity (irq=%d, cpu=%u)\n",
+				irq, cpu);
+			goto err_out;
+		}
+
+		if (platdata && platdata->irq_flags) {
+			irq_flags = platdata->irq_flags;
+		} else {
+			irq_flags = IRQF_PERCPU |
+				    IRQF_NOBALANCING |
+				    IRQF_NO_THREAD;
+		}
+
+		err = request_irq(irq, handler, irq_flags, "arm-pmu",
 				  per_cpu_ptr(&hw_events->percpu_pmu, cpu));
 	}
 
-	if (err) {
-		pr_err("unable to request IRQ%d for ARM PMU counters\n",
-			irq);
-		return err;
-	}
+	if (err)
+		goto err_out;
 
 	cpumask_set_cpu(cpu, &armpmu->active_irqs);
-
 	return 0;
+
+err_out:
+	pr_err("unable to request IRQ%d for ARM PMU counters\n", irq);
+	return err;
 }
 
 int armpmu_request_irqs(struct arm_pmu *armpmu)
@@ -628,12 +653,6 @@ static int arm_perf_starting_cpu(unsigned int cpu, struct hlist_node *node)
 			enable_percpu_irq(irq, IRQ_TYPE_NONE);
 			return 0;
 		}
-
-		if (irq_force_affinity(irq, cpumask_of(cpu)) &&
-		    num_possible_cpus() > 1) {
-			pr_warn("unable to set irq affinity (irq=%d, cpu=%u)\n",
-				irq, cpu);
-		}
 	}
 
 	return 0;
diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c
index 69255f53057a..4eafa7a42e52 100644
--- a/drivers/perf/arm_pmu_platform.c
+++ b/drivers/perf/arm_pmu_platform.c
@@ -131,8 +131,8 @@ static int pmu_parse_irqs(struct arm_pmu *pmu)
 	}
 
 	if (!pmu_has_irq_affinity(pdev->dev.of_node)) {
-		pr_warn("no interrupt-affinity property for %s, guessing.\n",
-			of_node_full_name(pdev->dev.of_node));
+		pr_warn("no interrupt-affinity property for %pOF, guessing.\n",
+			pdev->dev.of_node);
 	}
 
 	/*
@@ -211,7 +211,7 @@ int arm_pmu_device_probe(struct platform_device *pdev,
 	}
 
 	if (ret) {
-		pr_info("%s: failed to probe PMU!\n", of_node_full_name(node));
+		pr_info("%pOF: failed to probe PMU!\n", node);
 		goto out_free;
 	}
 
@@ -228,8 +228,7 @@ int arm_pmu_device_probe(struct platform_device *pdev,
 out_free_irqs:
 	armpmu_free_irqs(pmu);
 out_free:
-	pr_info("%s: failed to register PMU devices!\n",
-		of_node_full_name(node));
+	pr_info("%pOF: failed to register PMU devices!\n", node);
 	armpmu_free(pmu);
 	return ret;
 }
diff --git a/drivers/perf/qcom_l2_pmu.c b/drivers/perf/qcom_l2_pmu.c
index c259848228b4..b242cce10468 100644
--- a/drivers/perf/qcom_l2_pmu.c
+++ b/drivers/perf/qcom_l2_pmu.c
@@ -546,6 +546,7 @@ static int l2_cache_event_init(struct perf_event *event)
 	}
 
 	if ((event != event->group_leader) &&
+	    !is_software_event(event->group_leader) &&
 	    (L2_EVT_GROUP(event->group_leader->attr.config) ==
 	     L2_EVT_GROUP(event->attr.config))) {
 		dev_dbg_ratelimited(&l2cache_pmu->pdev->dev,
@@ -558,6 +559,7 @@ static int l2_cache_event_init(struct perf_event *event)
 	list_for_each_entry(sibling, &event->group_leader->sibling_list,
 			    group_entry) {
 		if ((sibling != event) &&
+		    !is_software_event(sibling) &&
 		    (L2_EVT_GROUP(sibling->attr.config) ==
 		     L2_EVT_GROUP(event->attr.config))) {
 			dev_dbg_ratelimited(&l2cache_pmu->pdev->dev,
diff --git a/drivers/perf/xgene_pmu.c b/drivers/perf/xgene_pmu.c
index e841282d690c..eb23311bc70c 100644
--- a/drivers/perf/xgene_pmu.c
+++ b/drivers/perf/xgene_pmu.c
@@ -1147,7 +1147,6 @@ xgene_pmu_dev_add(struct xgene_pmu *xgene_pmu, struct xgene_pmu_dev_ctx *ctx)
 {
 	struct device *dev = xgene_pmu->dev;
 	struct xgene_pmu_dev *pmu;
-	int rc;
 
 	pmu = devm_kzalloc(dev, sizeof(*pmu), GFP_KERNEL);
 	if (!pmu)
@@ -1159,7 +1158,7 @@ xgene_pmu_dev_add(struct xgene_pmu *xgene_pmu, struct xgene_pmu_dev_ctx *ctx)
 	switch (pmu->inf->type) {
 	case PMU_TYPE_L3C:
 		if (!(xgene_pmu->l3c_active_mask & pmu->inf->enable_mask))
-			goto dev_err;
+			return -ENODEV;
 		if (xgene_pmu->version == PCP_PMU_V3)
 			pmu->attr_groups = l3c_pmu_v3_attr_groups;
 		else
@@ -1177,7 +1176,7 @@ xgene_pmu_dev_add(struct xgene_pmu *xgene_pmu, struct xgene_pmu_dev_ctx *ctx)
 		break;
 	case PMU_TYPE_MCB:
 		if (!(xgene_pmu->mcb_active_mask & pmu->inf->enable_mask))
-			goto dev_err;
+			return -ENODEV;
 		if (xgene_pmu->version == PCP_PMU_V3)
 			pmu->attr_groups = mcb_pmu_v3_attr_groups;
 		else
@@ -1185,7 +1184,7 @@ xgene_pmu_dev_add(struct xgene_pmu *xgene_pmu, struct xgene_pmu_dev_ctx *ctx)
 		break;
 	case PMU_TYPE_MC:
 		if (!(xgene_pmu->mc_active_mask & pmu->inf->enable_mask))
-			goto dev_err;
+			return -ENODEV;
 		if (xgene_pmu->version == PCP_PMU_V3)
 			pmu->attr_groups = mc_pmu_v3_attr_groups;
 		else
@@ -1195,19 +1194,14 @@ xgene_pmu_dev_add(struct xgene_pmu *xgene_pmu, struct xgene_pmu_dev_ctx *ctx)
 		return -EINVAL;
 	}
 
-	rc = xgene_init_perf(pmu, ctx->name);
-	if (rc) {
+	if (xgene_init_perf(pmu, ctx->name)) {
 		dev_err(dev, "%s PMU: Failed to init perf driver\n", ctx->name);
-		goto dev_err;
+		return -ENODEV;
 	}
 
 	dev_info(dev, "%s PMU registered\n", ctx->name);
 
-	return rc;
-
-dev_err:
-	devm_kfree(dev, pmu);
-	return -ENODEV;
+	return 0;
 }
 
 static void _xgene_pmu_isr(int irq, struct xgene_pmu_dev *pmu_dev)
@@ -1515,13 +1509,13 @@ xgene_pmu_dev_ctx *acpi_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu,
 	acpi_dev_free_resource_list(&resource_list);
 	if (rc < 0) {
 		dev_err(dev, "PMU type %d: No resource address found\n", type);
-		goto err;
+		return NULL;
 	}
 
 	dev_csr = devm_ioremap_resource(dev, &res);
 	if (IS_ERR(dev_csr)) {
 		dev_err(dev, "PMU type %d: Fail to map resource\n", type);
-		goto err;
+		return NULL;
 	}
 
 	/* A PMU device node without enable-bit-index is always enabled */
@@ -1535,7 +1529,7 @@ xgene_pmu_dev_ctx *acpi_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu,
 	ctx->name = xgene_pmu_dev_name(dev, type, enable_bit);
 	if (!ctx->name) {
 		dev_err(dev, "PMU type %d: Fail to get device name\n", type);
-		goto err;
+		return NULL;
 	}
 	inf = &ctx->inf;
 	inf->type = type;
@@ -1543,9 +1537,6 @@ xgene_pmu_dev_ctx *acpi_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu,
 	inf->enable_mask = 1 << enable_bit;
 
 	return ctx;
-err:
-	devm_kfree(dev, ctx);
-	return NULL;
 }
 
 static const struct acpi_device_id xgene_pmu_acpi_type_match[] = {
@@ -1663,20 +1654,20 @@ xgene_pmu_dev_ctx *fdt_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu,
 	void __iomem *dev_csr;
 	struct resource res;
 	int enable_bit;
-	int rc;
 
 	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
 	if (!ctx)
 		return NULL;
-	rc = of_address_to_resource(np, 0, &res);
-	if (rc < 0) {
+
+	if (of_address_to_resource(np, 0, &res) < 0) {
 		dev_err(dev, "PMU type %d: No resource address found\n", type);
-		goto err;
+		return NULL;
 	}
+
 	dev_csr = devm_ioremap_resource(dev, &res);
 	if (IS_ERR(dev_csr)) {
 		dev_err(dev, "PMU type %d: Fail to map resource\n", type);
-		goto err;
+		return NULL;
 	}
 
 	/* A PMU device node without enable-bit-index is always enabled */
@@ -1686,17 +1677,15 @@ xgene_pmu_dev_ctx *fdt_get_pmu_hw_inf(struct xgene_pmu *xgene_pmu,
 	ctx->name = xgene_pmu_dev_name(dev, type, enable_bit);
 	if (!ctx->name) {
 		dev_err(dev, "PMU type %d: Fail to get device name\n", type);
-		goto err;
+		return NULL;
 	}
+
 	inf = &ctx->inf;
 	inf->type = type;
 	inf->csr = dev_csr;
 	inf->enable_mask = 1 << enable_bit;
 
 	return ctx;
-err:
-	devm_kfree(dev, ctx);
-	return NULL;
 }
 
 static int fdt_pmu_probe_pmu_dev(struct xgene_pmu *xgene_pmu,
@@ -1868,22 +1857,20 @@ static int xgene_pmu_probe(struct platform_device *pdev)
 	xgene_pmu->pcppmu_csr = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(xgene_pmu->pcppmu_csr)) {
 		dev_err(&pdev->dev, "ioremap failed for PCP PMU resource\n");
-		rc = PTR_ERR(xgene_pmu->pcppmu_csr);
-		goto err;
+		return PTR_ERR(xgene_pmu->pcppmu_csr);
 	}
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		dev_err(&pdev->dev, "No IRQ resource\n");
-		rc = -EINVAL;
-		goto err;
+		return -EINVAL;
 	}
 	rc = devm_request_irq(&pdev->dev, irq, xgene_pmu_isr,
 				IRQF_NOBALANCING | IRQF_NO_THREAD,
 				dev_name(&pdev->dev), xgene_pmu);
 	if (rc) {
 		dev_err(&pdev->dev, "Could not request IRQ %d\n", irq);
-		goto err;
+		return rc;
 	}
 
 	raw_spin_lock_init(&xgene_pmu->lock);
@@ -1903,42 +1890,29 @@ static int xgene_pmu_probe(struct platform_device *pdev)
 	rc = irq_set_affinity(irq, &xgene_pmu->cpu);
 	if (rc) {
 		dev_err(&pdev->dev, "Failed to set interrupt affinity!\n");
-		goto err;
+		return rc;
 	}
 
 	/* Walk through the tree for all PMU perf devices */
 	rc = xgene_pmu_probe_pmu_dev(xgene_pmu, pdev);
 	if (rc) {
 		dev_err(&pdev->dev, "No PMU perf devices found!\n");
-		goto err;
+		return rc;
 	}
 
 	/* Enable interrupt */
 	xgene_pmu->ops->unmask_int(xgene_pmu);
 
 	return 0;
-
-err:
-	if (xgene_pmu->pcppmu_csr)
-		devm_iounmap(&pdev->dev, xgene_pmu->pcppmu_csr);
-	devm_kfree(&pdev->dev, xgene_pmu);
-
-	return rc;
 }
 
 static void
 xgene_pmu_dev_cleanup(struct xgene_pmu *xgene_pmu, struct list_head *pmus)
 {
 	struct xgene_pmu_dev_ctx *ctx;
-	struct device *dev = xgene_pmu->dev;
-	struct xgene_pmu_dev *pmu_dev;
 
 	list_for_each_entry(ctx, pmus, next) {
-		pmu_dev = ctx->pmu_dev;
-		if (pmu_dev->inf->csr)
-			devm_iounmap(dev, pmu_dev->inf->csr);
-		devm_kfree(dev, ctx);
-		devm_kfree(dev, pmu_dev);
+		perf_pmu_unregister(&ctx->pmu_dev->pmu);
 	}
 }
 
@@ -1951,10 +1925,6 @@ static int xgene_pmu_remove(struct platform_device *pdev)
 	xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->mcbpmus);
 	xgene_pmu_dev_cleanup(xgene_pmu, &xgene_pmu->mcpmus);
 
-	if (xgene_pmu->pcppmu_csr)
-		devm_iounmap(&pdev->dev, xgene_pmu->pcppmu_csr);
-	devm_kfree(&pdev->dev, xgene_pmu);
-
 	return 0;
 }