diff options
Diffstat (limited to 'drivers/hwtracing/ptt/hisi_ptt.c')
| -rw-r--r-- | drivers/hwtracing/ptt/hisi_ptt.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c index a991ecb7515a..c1b5fd2b8974 100644 --- a/drivers/hwtracing/ptt/hisi_ptt.c +++ b/drivers/hwtracing/ptt/hisi_ptt.c @@ -183,6 +183,10 @@ static void hisi_ptt_wait_dma_reset_done(struct hisi_ptt *hisi_ptt) static void hisi_ptt_trace_end(struct hisi_ptt *hisi_ptt) { writel(0, hisi_ptt->iobase + HISI_PTT_TRACE_CTRL); + + /* Mask the interrupt on the end */ + writel(HISI_PTT_TRACE_INT_MASK_ALL, hisi_ptt->iobase + HISI_PTT_TRACE_INT_MASK); + hisi_ptt->trace_ctrl.started = false; } @@ -270,15 +274,14 @@ static int hisi_ptt_update_aux(struct hisi_ptt *hisi_ptt, int index, bool stop) buf->pos += size; /* - * Just commit the traced data if we're going to stop. Otherwise if the - * resident AUX buffer cannot contain the data of next trace buffer, - * apply a new one. + * Always commit the data to the AUX buffer in time to make sure + * userspace got enough time to consume the data. + * + * If we're not going to stop, apply a new one and check whether + * there's enough room for the next trace. */ - if (stop) { - perf_aux_output_end(handle, buf->pos); - } else if (buf->length - buf->pos < HISI_PTT_TRACE_BUF_SIZE) { - perf_aux_output_end(handle, buf->pos); - + perf_aux_output_end(handle, size); + if (!stop) { buf = perf_aux_output_begin(handle, event); if (!buf) return -EINVAL; |