Commit 598cb6f3 authored by Akinobu Mita's avatar Akinobu Mita Committed by Roland Dreier
Browse files

IB/ipath: Use bitmap_weight() 



Use bitmap_weight() instead of finding all set bits in bitmap by hand.

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Cc: Ralph Campbell <infinipath@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 91d3f9ba

drivers/infiniband/hw/ipath/ipath_driver.c

+3 −7
Original line number Diff line number Diff line
@@ -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);

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