diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2009-12-09 10:05:28 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-12-09 10:05:28 -0800 |
| commit | 598cb6f327c99ceaf81c45c32504669b2028712b (patch) | |
| tree | 3c5704f6ea3fe19d300914ef1f680875ea8f7b77 | |
| parent | 91d3f9bacdb4950d2f79fe2ba296aa249f60d06c (diff) | |
IB/ipath: Use bitmap_weight()
Use bitmap_weight() instead of finding all set bits in bitmap by hand.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Ralph Campbell <infinipath@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_driver.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index 013d1380e77c..d2787fe80304 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -39,6 +39,7 @@ #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/vmalloc.h> +#include <linux/bitmap.h> #include "ipath_kernel.h" #include "ipath_verbs.h" @@ -1697,7 +1698,7 @@ void ipath_chg_pioavailkernel(struct ipath_devdata *dd, unsigned start, unsigned len, int avail) { unsigned long flags; - unsigned end, cnt = 0, next; + unsigned end, cnt = 0; /* There are two bits per send buffer (busy and generation) */ start *= 2; @@ -1748,12 +1749,7 @@ void ipath_chg_pioavailkernel(struct ipath_devdata *dd, unsigned start, if (dd->ipath_pioupd_thresh) { end = 2 * (dd->ipath_piobcnt2k + dd->ipath_piobcnt4k); - next = find_first_bit(dd->ipath_pioavailkernel, end); - while (next < end) { - cnt++; - next = find_next_bit(dd->ipath_pioavailkernel, end, - next + 1); - } + cnt = bitmap_weight(dd->ipath_pioavailkernel, end); } spin_unlock_irqrestore(&ipath_pioavail_lock, flags); |