For drivers that do not support context exclusion let's advertise the PERF_PMU_CAP_NO_EXCLUDE capability. This ensures that perf will prevent us from handling events where any exclusion flags are set. Let's also remove the now unnecessary check for exclusion flags.

Signed-off-by: Andrew Murray <[e-mail]>
Signed-off-by: Peter Zijlstra (Intel) <[e-mail]>
Acked-by: Will Deacon <[e-mail]>
Cc: Arnaldo Carvalho de Melo <[e-mail]>
Cc: Benjamin Herrenschmidt <[e-mail]>
Cc: Borislav Petkov <[e-mail]>
Cc: Ivan Kokshaysky <[e-mail]>
Cc: Linus Torvalds <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Matt Turner <[e-mail]>
Cc: Michael Ellerman <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Richard Henderson <[e-mail]>
Cc: Russell King <[e-mail]>
Cc: Sascha Hauer <[e-mail]>
Cc: Shawn Guo <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Ingo Molnar <[e-mail]>

drivers/perf/arm-cci.c

···
 	if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
 		return -EOPNOTSUPP;
 
-	/* We have no filtering of any kind */
-	if (event->attr.exclude_user	||
-	    event->attr.exclude_kernel	||
-	    event->attr.exclude_hv	||
-	    event->attr.exclude_idle	||
-	    event->attr.exclude_host	||
-	    event->attr.exclude_guest)
-		return -EINVAL;
-
 	/*
 	 * Following the example set by other "uncore" PMUs, we accept any CPU
 	 * and rewrite its affinity dynamically rather than having perf core
···
 		.stop		= cci_pmu_stop,
 		.read		= pmu_read,
 		.attr_groups	= pmu_attr_groups,
+		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
 	};
 
 	cci_pmu->plat_device = pdev;

drivers/perf/arm-ccn.c

···
 		return -EOPNOTSUPP;
 	}
 
-	if (has_branch_stack(event) || event->attr.exclude_user ||
-			event->attr.exclude_kernel || event->attr.exclude_hv ||
-			event->attr.exclude_idle || event->attr.exclude_host ||
-			event->attr.exclude_guest) {
+	if (has_branch_stack(event)) {
 		dev_dbg(ccn->dev, "Can't exclude execution levels!\n");
 		return -EINVAL;
 	}
···
 		.read = arm_ccn_pmu_event_read,
 		.pmu_enable = arm_ccn_pmu_enable,
 		.pmu_disable = arm_ccn_pmu_disable,
+		.capabilities = PERF_PMU_CAP_NO_EXCLUDE,
 	};
 
 	/* No overflow interrupt? Have to use a timer instead. */

drivers/perf/arm_dsu_pmu.c

···
 		return -EINVAL;
 	}
 
-	if (has_branch_stack(event) ||
-	    event->attr.exclude_user ||
-	    event->attr.exclude_kernel ||
-	    event->attr.exclude_hv ||
-	    event->attr.exclude_idle ||
-	    event->attr.exclude_host ||
-	    event->attr.exclude_guest) {
+	if (has_branch_stack(event)) {
 		dev_dbg(dsu_pmu->pmu.dev, "Can't support filtering\n");
 		return -EINVAL;
 	}
···
 		.read		= dsu_pmu_read,
 
 		.attr_groups	= dsu_pmu_attr_groups,
+		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
 	};
 
 	rc = perf_pmu_register(&dsu_pmu->pmu, name, -1);

drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c

···
 		.stop		= hisi_uncore_pmu_stop,
 		.read		= hisi_uncore_pmu_read,
 		.attr_groups	= hisi_ddrc_pmu_attr_groups,
+		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
 	};
 
 	ret = perf_pmu_register(&ddrc_pmu->pmu, name, -1);

drivers/perf/hisilicon/hisi_uncore_hha_pmu.c

···
 		.stop		= hisi_uncore_pmu_stop,
 		.read		= hisi_uncore_pmu_read,
 		.attr_groups	= hisi_hha_pmu_attr_groups,
+		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
 	};
 
 	ret = perf_pmu_register(&hha_pmu->pmu, name, -1);

drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c

···
 		.stop		= hisi_uncore_pmu_stop,
 		.read		= hisi_uncore_pmu_read,
 		.attr_groups	= hisi_l3c_pmu_attr_groups,
+		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
 	};
 
 	ret = perf_pmu_register(&l3c_pmu->pmu, name, -1);

drivers/perf/hisilicon/hisi_uncore_pmu.c

···
 	if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
 		return -EOPNOTSUPP;
 
-	/* counters do not have these bits */
-	if (event->attr.exclude_user	||
-	    event->attr.exclude_kernel	||
-	    event->attr.exclude_host	||
-	    event->attr.exclude_guest	||
-	    event->attr.exclude_hv	||
-	    event->attr.exclude_idle)
-		return -EINVAL;
-
 	/*
 	 *  The uncore counters not specific to any CPU, so cannot
 	 *  support per-task

drivers/perf/thunderx2_pmu.c

···
 	if (is_sampling_event(event) || event->attach_state & PERF_ATTACH_TASK)
 		return -EINVAL;
 
-	/* We have no filtering of any kind */
-	if (event->attr.exclude_user	||
-	    event->attr.exclude_kernel	||
-	    event->attr.exclude_hv	||
-	    event->attr.exclude_idle	||
-	    event->attr.exclude_host	||
-	    event->attr.exclude_guest)
-		return -EINVAL;
-
 	if (event->cpu < 0)
 		return -EINVAL;
 
···
 		.start		= tx2_uncore_event_start,
 		.stop		= tx2_uncore_event_stop,
 		.read		= tx2_uncore_event_read,
+		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
 	};
 
 	tx2_pmu->pmu.name = devm_kasprintf(dev, GFP_KERNEL,