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Commit 80b60fa8 authored by Larry Finger's avatar Larry Finger Committed by John W. Linville
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[PATCH] bcm43xx: optimization of DMA bitfields 



Convert the bitfields in the bcm43xx DMA code to properly
aligned u8 booleans. These flags are accessed in the DMA
hotpath, so it's a good idea to waste a few bytes of memory
for the sake of speed by not requiring masking (and probably
shifting) of the bitfields.

Signed-off-by: default avatarMichael Buesch <mb@bu3sch.de>
Signed-Off-By: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 9c974fb1

drivers/net/wireless/bcm43xx/bcm43xx_dma.h

+6 −3
Original line number Original line Diff line number Diff line
@@ -235,9 +235,12 @@ struct bcm43xx_dmaring { 
	u16 mmio_base;

	u16 mmio_base;

	/* DMA controller index number (0-5). */

	/* DMA controller index number (0-5). */

	int index;

	int index;

	u8 tx:1,	/* TRUE, if this is a TX ring. */

	/* Boolean. Is this a TX ring? */

	   dma64:1,	/* TRUE, if 64-bit DMA is enabled (FALSE if 32bit). */

	u8 tx;

	   suspended:1;	/* TRUE, if transfers are suspended on this ring. */

	/* Boolean. 64bit DMA if true, 32bit DMA otherwise. */

	u8 dma64;

	/* Boolean. Are transfers suspended on this ring? */

	u8 suspended;

	struct bcm43xx_private *bcm;

	struct bcm43xx_private *bcm;

#ifdef CONFIG_BCM43XX_DEBUG

#ifdef CONFIG_BCM43XX_DEBUG

	/* Maximum number of used slots. */

	/* Maximum number of used slots. */