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| author | Helmut Schaa <helmut.schaa@googlemail.com> | 2010-11-04 20:38:56 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-11-15 13:26:00 -0500 |
| commit | e2f8c8752b994026fc0ddb4bb29ca229b3e0c104 (patch) | |
| tree | 4ebaf573ce33eb5002b454eb0d432ddef31d51e5 /drivers/net/wireless/rt2x00/rt2x00debug.c | |
| parent | 2b23cdaa3b0e9567597563e5a7a5103ecda447f0 (diff) | |
| download | olio-linux-3.10-e2f8c8752b994026fc0ddb4bb29ca229b3e0c104.tar.xz olio-linux-3.10-e2f8c8752b994026fc0ddb4bb29ca229b3e0c104.zip | |
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>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00debug.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00debug.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00debug.c b/drivers/net/wireless/rt2x00/rt2x00debug.c index fcdb6b0dc40..8296a9d47bb 100644 --- a/drivers/net/wireless/rt2x00/rt2x00debug.c +++ b/drivers/net/wireless/rt2x00/rt2x00debug.c @@ -162,11 +162,11 @@ void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev, struct timeval timestamp; u32 data_len; - do_gettimeofday(×tamp); - - 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(×tamp); + if (skb_queue_len(&intf->frame_dump_skbqueue) > 20) { DEBUG(rt2x00dev, "txrx dump queue length exceeded.\n"); return; |