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-rw-r--r--arch/arm/kernel/perf_event.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index b2abfa1..186c8cb 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -539,6 +539,10 @@ static int armpmu_event_init(struct perf_event *event)
int err = 0;
atomic_t *active_events = &armpmu->active_events;
+ /* does not support taken branch sampling */
+ if (has_branch_stack(event))
+ return -EOPNOTSUPP;
+
if (armpmu->map_event(event) == -ENOENT)
return -ENOENT;
@@ -734,6 +738,9 @@ init_hw_perf_events(void)
case 0xC0F0: /* Cortex-A15 */
cpu_pmu = armv7_a15_pmu_init();
break;
+ case 0xC070: /* Cortex-A7 */
+ cpu_pmu = armv7_a7_pmu_init();
+ break;
}
/* Intel CPUs [xscale]. */
} else if (0x69 == implementor) {