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2024-05-11 297b60346df8beafee954a0fd7c2d64f33f3b9bc 
 kernel/arch/arm/mach-imx/mmdc.c
....@@ -1,14 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * Copyright 2017 NXP
34  * Copyright 2011,2016 Freescale Semiconductor, Inc.
45  * Copyright 2011 Linaro Ltd.
5
- *
6
- * The code contained herein is licensed under the GNU General Public
7
- * License. You may obtain a copy of the GNU General Public License
8
- * Version 2 or later at the following locations:
9
- *
10
- * http://www.opensource.org/licenses/gpl-license.html
11
- * http://www.gnu.org/copyleft/gpl.html
126  */
137 
148 #include <linux/clk.h>
....@@ -105,6 +99,7 @@
10599 	cpumask_t cpu;
106100 	struct hrtimer hrtimer;
107101 	unsigned int active_events;
102
+	int id;
108103 	struct device *dev;
109104 	struct perf_event *mmdc_events[MMDC_NUM_COUNTERS];
110105 	struct hlist_node node;
....@@ -295,13 +290,7 @@
295290 		return -EOPNOTSUPP;
296291 	}
297292 
298
-	if (event->attr.exclude_user		||
299
-			event->attr.exclude_kernel	||
300
-			event->attr.exclude_hv		||
301
-			event->attr.exclude_idle	||
302
-			event->attr.exclude_host	||
303
-			event->attr.exclude_guest	||
304
-			event->attr.sample_period)
293
+	if (event->attr.sample_period)
305294 		return -EINVAL;
306295 
307296 	if (cfg < 0 || cfg >= MMDC_NUM_COUNTERS)
....@@ -445,8 +434,6 @@
445434 static int mmdc_pmu_init(struct mmdc_pmu *pmu_mmdc,
446435 		void __iomem *mmdc_base, struct device *dev)
447436 {
448
-	int mmdc_num;
449
-
450437 	*pmu_mmdc = (struct mmdc_pmu) {
451438 		.pmu = (struct pmu) {
452439 			.task_ctx_nr    = perf_invalid_context,
....@@ -457,21 +444,23 @@
457444 			.start          = mmdc_pmu_event_start,
458445 			.stop           = mmdc_pmu_event_stop,
459446 			.read           = mmdc_pmu_event_update,
447
+			.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
460448 		},
461449 		.mmdc_base = mmdc_base,
462450 		.dev = dev,
463451 		.active_events = 0,
464452 	};
465453 
466
-	mmdc_num = ida_simple_get(&mmdc_ida, 0, 0, GFP_KERNEL);
454
+	pmu_mmdc->id = ida_simple_get(&mmdc_ida, 0, 0, GFP_KERNEL);
467455 
468
-	return mmdc_num;
456
+	return pmu_mmdc->id;
469457 }
470458 
471459 static int imx_mmdc_remove(struct platform_device *pdev)
472460 {
473461 	struct mmdc_pmu *pmu_mmdc = platform_get_drvdata(pdev);
474462 
463
+	ida_simple_remove(&mmdc_ida, pmu_mmdc->id);
475464 	cpuhp_state_remove_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
476465 	perf_pmu_unregister(&pmu_mmdc->pmu);
477466 	iounmap(pmu_mmdc->mmdc_base);
....@@ -485,7 +474,6 @@
485474 {
486475 	struct mmdc_pmu *pmu_mmdc;
487476 	char *name;
488
-	int mmdc_num;
489477 	int ret;
490478 	const struct of_device_id *of_id =
491479 		of_match_device(imx_mmdc_dt_ids, &pdev->dev);
....@@ -508,14 +496,14 @@
508496 		cpuhp_mmdc_state = ret;
509497 	}
510498 
511
-	mmdc_num = mmdc_pmu_init(pmu_mmdc, mmdc_base, &pdev->dev);
512
-	pmu_mmdc->mmdc_ipg_clk = mmdc_ipg_clk;
513
-	if (mmdc_num == 0)
514
-		name = "mmdc";
515
-	else
516
-		name = devm_kasprintf(&pdev->dev,
517
-				GFP_KERNEL, "mmdc%d", mmdc_num);
499
+	ret = mmdc_pmu_init(pmu_mmdc, mmdc_base, &pdev->dev);
500
+	if (ret < 0)
501
+		goto  pmu_free;
518502 
503
+	name = devm_kasprintf(&pdev->dev,
504
+				GFP_KERNEL, "mmdc%d", ret);
505
+
506
+	pmu_mmdc->mmdc_ipg_clk = mmdc_ipg_clk;
519507 	pmu_mmdc->devtype_data = (struct fsl_mmdc_devtype_data *)of_id->data;
520508 
521509 	hrtimer_init(&pmu_mmdc->hrtimer, CLOCK_MONOTONIC,
....@@ -536,6 +524,7 @@
536524 
537525 pmu_register_err:
538526 	pr_warn("MMDC Perf PMU failed (%d), disabled\n", ret);
527
+	ida_simple_remove(&mmdc_ida, pmu_mmdc->id);
539528 	cpuhp_state_remove_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
540529 	hrtimer_cancel(&pmu_mmdc->hrtimer);
541530 pmu_free: