1 files changed, 11 insertions, 24 deletions

diff --git a/arch/alpha/kernel/perf_event.c b/arch/alpha/kernel/perf_event.c
index 5c218aa3f3df..a3eaab094ece 100644
--- a/arch/alpha/kernel/perf_event.c
+++ b/arch/alpha/kernel/perf_event.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Hardware performance events for the Alpha.
  *
@@ -350,7 +351,7 @@ static int collect_events(struct perf_event *group, int max_count,
 		evtype[n] = group->hw.event_base;
 		current_idx[n++] = PMC_NO_INDEX;
 	}
-	list_for_each_entry(pe, &group->sibling_list, group_entry) {
+	for_each_sibling_event(pe, group) {
 		if (!is_software_event(pe) && pe->state != PERF_EVENT_STATE_OFF) {
 			if (n >= max_count)
 				return -1;
@@ -573,7 +574,7 @@ static void alpha_pmu_start(struct perf_event *event, int flags)
  * Check that CPU performance counters are supported.
  * - currently support EV67 and later CPUs.
  * - actually some later revisions of the EV6 have the same PMC model as the
- *     EV67 but we don't do suffiently deep CPU detection to detect them.
+ *     EV67 but we don't do sufficiently deep CPU detection to detect them.
  *     Bad luck to the very few people who might have one, I guess.
  */
 static int supported_cpu(void)
@@ -629,12 +630,6 @@ static int __hw_perf_event_init(struct perf_event *event)
 		return ev;
 	}
 
-	/* The EV67 does not support mode exclusion */
-	if (attr->exclude_kernel || attr->exclude_user
-			|| attr->exclude_hv || attr->exclude_idle) {
-		return -EPERM;
-	}
-
 	/*
 	 * We place the event type in event_base here and leave calculation
 	 * of the codes to programme the PMU for alpha_pmu_enable() because
@@ -694,8 +689,6 @@ static int __hw_perf_event_init(struct perf_event *event)
  */
 static int alpha_pmu_event_init(struct perf_event *event)
 {
-	int err;
-
 	/* does not support taken branch sampling */
 	if (has_branch_stack(event))
 		return -EOPNOTSUPP;
@@ -714,9 +707,7 @@ static int alpha_pmu_event_init(struct perf_event *event)
 		return -ENODEV;
 
 	/* Do the real initialisation work. */
-	err = __hw_perf_event_init(event);
-
-	return err;
+	return __hw_perf_event_init(event);
 }
 
 /*
@@ -770,6 +761,7 @@ static struct pmu pmu = {
 	.start		= alpha_pmu_start,
 	.stop		= alpha_pmu_stop,
 	.read		= alpha_pmu_read,
+	.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
 };
 
 
@@ -828,7 +820,7 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr,
 	if (unlikely(la_ptr >= alpha_pmu->num_pmcs)) {
 		/* This should never occur! */
 		irq_err_count++;
-		pr_warning("PMI: silly index %ld\n", la_ptr);
+		pr_warn("PMI: silly index %ld\n", la_ptr);
 		wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);
 		return;
 	}
@@ -851,7 +843,7 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr,
 	if (unlikely(!event)) {
 		/* This should never occur! */
 		irq_err_count++;
-		pr_warning("PMI: No event at index %d!\n", idx);
+		pr_warn("PMI: No event at index %d!\n", idx);
 		wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);
 		return;
 	}
@@ -860,14 +852,9 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr,
 	alpha_perf_event_update(event, hwc, idx, alpha_pmu->pmc_max_period[idx]+1);
 	perf_sample_data_init(&data, 0, hwc->last_period);
 
-	if (alpha_perf_event_set_period(event, hwc, idx)) {
-		if (perf_event_overflow(event, &data, regs)) {
-			/* Interrupts coming too quickly; "throttle" the
-			 * counter, i.e., disable it for a little while.
-			 */
-			alpha_pmu_stop(event, 0);
-		}
-	}
+	if (alpha_perf_event_set_period(event, hwc, idx))
+		perf_event_overflow(event, &data, regs);
+
 	wrperfmon(PERFMON_CMD_ENABLE, cpuc->idx_mask);
 
 	return;
@@ -878,7 +865,7 @@ static void alpha_perf_event_irq_handler(unsigned long la_ptr,
 /*
  * Init call to initialise performance events at kernel startup.
  */
-int __init init_hw_perf_events(void)
+static int __init init_hw_perf_events(void)
 {
 	pr_info("Performance events: ");