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rt2x00: Optimize rt2x00debug_dump_frame when frame dumping is not active 

When rt2x00 is compiled with debugging but frame dumping is currently
not active we can avoid the call to do_gettimeofday. Furthermore,
frame dumping is not the default case, mark it as unlikely.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa 2010-11-04 20:38:56 +01:00 committed by John W. Linville
parent 2b23cdaa3b
commit e2f8c8752b
1 changed files with 3 additions and 3 deletions
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6
drivers/net/wireless/rt2x00/rt2x00debug.c
View File

@ -162,11 +162,11 @@ void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
struct timeval timestamp;
u32 data_len;
do_gettimeofday(&timestamp);
if (!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags))
if (likely(!test_bit(FRAME_DUMP_FILE_OPEN, &intf->frame_dump_flags)))
return;
do_gettimeofday(&timestamp);
if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) {
DEBUG(rt2x00dev, "txrx dump queue length exceeded.\n");
return;