diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_qdio.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_qdio.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index 2b499e28ff1..6c5228b627f 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -56,16 +56,15 @@ static void zfcp_qdio_zero_sbals(struct qdio_buffer *sbal[], int first, int cnt) } /* this needs to be called prior to updating the queue fill level */ -static void zfcp_qdio_account(struct zfcp_qdio *qdio) +static inline void zfcp_qdio_account(struct zfcp_qdio *qdio) { - ktime_t now; - s64 span; + unsigned long long now, span; int free, used; spin_lock(&qdio->stat_lock); - now = ktime_get(); - span = ktime_us_delta(now, qdio->req_q_time); - free = max(0, atomic_read(&qdio->req_q.count)); + now = get_clock_monotonic(); + span = (now - qdio->req_q_time) >> 12; + free = atomic_read(&qdio->req_q.count); used = QDIO_MAX_BUFFERS_PER_Q - free; qdio->req_q_util += used * span; qdio->req_q_time = now; |