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s390/time: always use stckf instead of stck if available

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The store clock fast instruction saves a couple of instructions compared
to the store clock instruction. Always use stckf instead of stck if it
is available.

Signed-off-by: Heiko Carstens <[email protected]>
Reviewed-by: Martin Schwidefsky <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
This commit is contained in:
Heiko Carstens 2012-05-09 16:27:39 +02:00 • committed by Martin Schwidefsky
commit 473e66baad
5 changed files with 19 additions and 23 deletions
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4
drivers/s390/cio/qdio_main.c
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@ -517,7 +517,7 @@ static int get_inbound_buffer_frontier(struct qdio_q *q)
int count, stop;
unsigned char state = 0;
q->timestamp = get_clock_fast();
q->timestamp = get_clock();
/*
* Don't check 128 buffers, as otherwise qdio_inbound_q_moved
@ -788,7 +788,7 @@ static int get_outbound_buffer_frontier(struct qdio_q *q)
int count, stop;
unsigned char state = 0;
q->timestamp = get_clock_fast();
q->timestamp = get_clock();
if (need_siga_sync(q))
if (((queue_type(q) != QDIO_IQDIO_QFMT) &&