lkml.org 
[lkml]   [2014]   [May]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 1/1] drivers/s390/cio/qdio_main.c: replace shift loop by ilog2

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

\
 
 \ /
  Last update: 2014-05-20 19:41    [W:0.094 / U:0.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site