diff options
| -rw-r--r-- | arch/arm64/kernel/perf_event.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 34a7cd3af699..e43ab350a5a2 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -541,6 +541,11 @@ static u32 armv8pmu_event_cnten_mask(struct perf_event *event) static inline void armv8pmu_enable_counter(u32 mask) { + /* + * Make sure event configuration register writes are visible before we + * enable the counter. + * */ + isb(); write_sysreg(mask, pmcntenset_el0); } |