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>
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index 013d138..d2787fe 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 @@
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 @@
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);