Messages in this thread Patch in this message | | | Date | Tue, 20 May 2014 18:37:28 +0200 | From | Fabian Frederick <> | Subject | [PATCH 1/1] drivers/s390/cio/qdio_main.c: replace shift loop by ilog2 |
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This is untested.
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Fabian Frederick <fabf@skynet.be> --- drivers/s390/cio/qdio_main.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 77466c4..8bf9ec1 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -411,15 +411,14 @@ static inline void qdio_stop_polling(struct qdio_q *q) static inline void account_sbals(struct qdio_q *q, int count) { - int pos = 0; + int pos; q->q_stats.nr_sbal_total += count; if (count == QDIO_MAX_BUFFERS_MASK) { q->q_stats.nr_sbals[7]++; return; } - while (count >>= 1) - pos++; + pos = ilog2(count); q->q_stats.nr_sbals[pos]++; } -- 1.8.4.5
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