The patch titled
ipath: use bitmap_weight()
has been added to the -mm tree. Its filename is
ipath-use-bitmap_weight.patch
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------------------------------------------------------
Subject: ipath: use bitmap_weight()
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Use bitmap_weight() instead of finding all set bits in bitmap.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Ralph Campbell <infinipath@xxxxxxxxxx>
Cc: Roland Dreier <rolandd@xxxxxxxxx>
Cc: Sean Hefty <sean.hefty@xxxxxxxxx>
Cc: Hal Rosenstock <hal.rosenstock@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/hw/ipath/ipath_driver.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff -puN drivers/infiniband/hw/ipath/ipath_driver.c~ipath-use-bitmap_weight drivers/infiniband/hw/ipath/ipath_driver.c
--- a/drivers/infiniband/hw/ipath/ipath_driver.c~ipath-use-bitmap_weight
+++ a/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 ipa
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 ipa
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);
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
linux-next.patch
ipath-use-bitmap_weight.patch
ntfs-use-bitmap_weight.patch
hpfs-use-hweight32.patch
hpfs-use-bitmap_weight.patch
qnx4-use-hweight8.patch
bitmap-introduce-bitmap_set-bitmap_clear-bitmap_find_next_zero_area.patch
iommu-helper-use-bitmap-library.patch
isp1362-hcd-use-bitmap_find_next_zero_area.patch
mlx4-use-bitmap_find_next_zero_area.patch
sparc-use-bitmap_find_next_zero_area.patch
ia64-use-bitmap_find_next_zero_area.patch
genalloc-use-bitmap_find_next_zero_area.patch
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