add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * HiSilicon SoC L3C uncore Hardware event counters support
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  *
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@@ -6,10 +7,6 @@
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  *         Shaokun Zhang <zhangshaokun@hisilicon.com>
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  *
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  * This code is based on the uncore PMUs like arm-cci and arm-ccn.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/acpi.h>
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 #include <linux/bug.h>
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@@ -209,10 +206,8 @@
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 	/* Read and init IRQ */
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 	irq = platform_get_irq(pdev, 0);
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-	if (irq < 0) {
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-		dev_err(&pdev->dev, "L3C PMU get irq fail; irq:%d\n", irq);
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+	if (irq < 0)
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 		return irq;
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-	}
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 	ret = devm_request_irq(&pdev->dev, irq, hisi_l3c_pmu_isr,
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 			       IRQF_NOBALANCING | IRQF_NO_THREAD,
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@@ -238,7 +233,6 @@
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 				  struct hisi_pmu *l3c_pmu)
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 {
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 	unsigned long long id;
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-	struct resource *res;
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 	acpi_status status;
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 	status = acpi_evaluate_integer(ACPI_HANDLE(&pdev->dev),
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@@ -264,8 +258,7 @@
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 		return -EINVAL;
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 	}
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	l3c_pmu->base = devm_ioremap_resource(&pdev->dev, res);
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+	l3c_pmu->base = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(l3c_pmu->base)) {
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 		dev_err(&pdev->dev, "ioremap failed for l3c_pmu resource\n");
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 		return PTR_ERR(l3c_pmu->base);
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@@ -387,6 +380,7 @@
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 			      l3c_pmu->sccl_id, l3c_pmu->index_id);
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 	l3c_pmu->pmu = (struct pmu) {
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 		.name		= name,
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+		.module		= THIS_MODULE,
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 		.task_ctx_nr	= perf_invalid_context,
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 		.event_init	= hisi_uncore_pmu_event_init,
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 		.pmu_enable	= hisi_uncore_pmu_enable,
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@@ -397,13 +391,15 @@
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 		.stop		= hisi_uncore_pmu_stop,
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 		.read		= hisi_uncore_pmu_read,
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 		.attr_groups	= hisi_l3c_pmu_attr_groups,
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+		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
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 	};
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 	ret = perf_pmu_register(&l3c_pmu->pmu, name, -1);
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 	if (ret) {
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 		dev_err(l3c_pmu->dev, "L3C PMU register failed!\n");
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-		cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
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-					    &l3c_pmu->node);
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+		cpuhp_state_remove_instance_nocalls(
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+			CPUHP_AP_PERF_ARM_HISI_L3_ONLINE, &l3c_pmu->node);
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+		irq_set_affinity_hint(l3c_pmu->irq, NULL);
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 	}
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 	return ret;
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@@ -414,8 +410,9 @@
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 	struct hisi_pmu *l3c_pmu = platform_get_drvdata(pdev);
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 	perf_pmu_unregister(&l3c_pmu->pmu);
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-	cpuhp_state_remove_instance(CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
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-				    &l3c_pmu->node);
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+	cpuhp_state_remove_instance_nocalls(CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
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+					    &l3c_pmu->node);
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+	irq_set_affinity_hint(l3c_pmu->irq, NULL);
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 	return 0;
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 }
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@@ -424,6 +421,7 @@
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 	.driver = {
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 		.name = "hisi_l3c_pmu",
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 		.acpi_match_table = ACPI_PTR(hisi_l3c_pmu_acpi_match),
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+		.suppress_bind_attrs = true,
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 	},
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 	.probe = hisi_l3c_pmu_probe,
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 	.remove = hisi_l3c_pmu_remove,