diff options
Diffstat (limited to 'arch/metag/kernel')
| -rw-r--r-- | arch/metag/kernel/perf/perf_event.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/metag/kernel/perf/perf_event.c b/arch/metag/kernel/perf/perf_event.c index 54fde35b4b9c..a1eff3687e8e 100644 --- a/arch/metag/kernel/perf/perf_event.c +++ b/arch/metag/kernel/perf/perf_event.c @@ -617,9 +617,7 @@ static void metag_pmu_enable_counter(struct hw_perf_event *event, int idx) WARN_ONCE((config != 0x100), "invalid configuration (%d) for counter (%d)\n", config, idx); - - /* Reset the cycle count */ - __core_reg_set(TXTACTCYC, 0); + local64_set(&event->prev_count, __core_reg_get(TXTACTCYC)); goto unlock; } @@ -708,9 +706,8 @@ static u64 metag_pmu_read_counter(int idx) { u32 tmp = 0; - /* The act of reading the cycle counter also clears it */ if (METAG_INST_COUNTER == idx) { - __core_reg_swap(TXTACTCYC, tmp); + tmp = __core_reg_get(TXTACTCYC); goto out; } |