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linux/arch/arm
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Sudhakar Rajashekhara ca2afb6dbe davinci: mmc: pass number of SG segments as platform data 
On some platforms like DM355, the number of EDMA parameter slots available
for EDMA_SLOT_ANY usage are few.  In such cases, if MMC/SD uses 16 slots
for each instance of MMC controller, then the number of slots available
for other modules will be very few.

By passing the number of EDMA slots to be used in MMC driver from platform
data, EDMA slots available for other purposes can be controlled.

Most of the platforms will not use this platform data variable.  But on
DM355, as the number of EDMA resources available is limited, the number of
scatter- gather segments used inside the MMC driver can be 8 (passed as
platform data) instead of 16.  On DM355, when the number of scatter-gather
segments was reduced to 8, I saw a performance difference of about
0.25-0.4 Mbytes/sec during write.  Read performance variations were
negligible.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27 09:12:39 -07:00
..
boot ARM: arch/arm/boot/bootp/bootp.lds: Checkpatch cleanup 2010-05-24 20:40:09 +01:00
common Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
configs Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-05-25 12:06:33 -07:00
include/asm Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-05-25 12:06:33 -07:00
kernel Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-05-25 12:06:33 -07:00
lib ARM: 6110/1: Fix Thumb-2 kernel builds when UACCESS_WITH_MEMCPY is enabled 2010-05-08 10:45:26 +01:00
mach-aaec2000
mach-at91 ARM: mach-at91: duplicated include 2010-05-24 20:40:13 +01:00
mach-bcmring Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
mach-clps711x ARM: arch/arm/mach-clps711x/Makefile.boot: Checkpatch cleanup 2010-05-24 20:40:09 +01:00
mach-cns3xxx
mach-davinci davinci: mmc: pass number of SG segments as platform data 2010-05-27 09:12:39 -07:00
mach-dove
mach-ebsa110
mach-ep93xx Merge remote branch 'origin' into secretlab/next-spi 2010-05-25 00:38:26 -06:00
mach-footbridge ARM: arch/arm/mach-footbridge/ebsa285-pci.c: Checkpatch cleanup 2010-05-24 20:40:10 +01:00
mach-gemini
mach-h720x ARM: arch/arm/mach-h720x/common.h: Checkpatch cleanup 2010-05-24 20:40:10 +01:00
mach-integrator Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
mach-iop13xx
mach-iop32x Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
mach-iop33x
mach-ixp4xx Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
mach-ixp23xx
mach-ixp2000
mach-kirkwood Merge git://git.infradead.org/mtd-2.6 2010-05-21 07:25:43 -07:00
mach-ks8695
mach-l7200
mach-lh7a40x
mach-loki
mach-mmp [ARM] mmp: append device support in jasper 2010-05-11 17:25:06 +02:00
mach-msm Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-05-25 12:06:33 -07:00
mach-mv78xx0
mach-mx1
mach-mx2 Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-05-25 12:06:33 -07:00
mach-mx3 Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-05-25 12:06:33 -07:00
mach-mx5 Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel-stable 2010-05-20 23:43:18 +01:00
mach-mx25 arm/mx25: add watchdog device 2010-05-18 08:32:33 +02:00
mach-mxc91231
mach-netx
mach-nomadik ARM: 6137/1: nomadik hwrng: Add clock support 2010-05-20 23:51:07 +01:00
mach-ns9xxx
mach-nuc93x
mach-omap1 Merge branch 'omap4-i2c-init' into omap-for-linus 2010-05-20 11:37:23 -07:00
mach-omap2 Merge branch 'for-linus' of git://gitorious.org/linux-omap-dss2/linux 2010-05-21 15:20:57 -07:00
mach-orion5x
mach-pnx4008
mach-pxa Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2010-05-20 21:04:44 -07:00
mach-realview Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
mach-rpc
mach-s3c24a0/include/mach
mach-s3c64xx ARM: S3C64XX: PM: Synchronise wakeup mask on suspend 2010-05-20 21:07:08 +09:00
mach-s3c2400
mach-s3c2410 ARM: SAMSUNG: Move WDT device definitions in plat-samsung 2010-05-20 19:44:18 +09:00
mach-s3c2412 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-05-20 09:41:44 -07:00
mach-s3c2416 ARM: SMDK2416: Add support for framebuffer device and ensure correct setup 2010-05-18 18:46:30 +09:00
mach-s3c2440 ARM: Merge for-2635/gpio2 2010-05-19 18:04:08 +09:00
mach-s3c2443 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
mach-s5p6440 ARM: S5P6440: Add locking to GPIO calls 2010-05-20 21:05:40 +09:00
mach-s5p6442 ARM: S5P6442: Define SPI platform devices 2010-05-20 19:34:01 +09:00
mach-s5pc100 ARM: S5PC100: Fixup merge problems 2010-05-23 16:27:04 +01:00
mach-s5pv210 ARM: S5PV210: Add temporary <mach/regs-fb.h> 2010-05-20 20:58:18 +09:00
mach-sa1100 ARM: arch/arm/mach-sa1100/leds.c: Checkpatch cleanup 2010-05-24 20:40:11 +01:00
mach-shark ARM: arch/arm/mach-shark/pci.c: Checkpatch cleanup 2010-05-24 20:40:11 +01:00
mach-shmobile ARM: remove 'select GENERIC_TIME' 2010-05-18 08:17:56 +01:00
mach-spear3xx
mach-spear6xx ARM: SPEAR6xx: remove duplicated #include 2010-05-24 20:39:52 +01:00
mach-stmp37xx
mach-stmp378x
mach-u300 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2010-05-21 17:05:46 -07:00
mach-ux500 ARM: 6104/1: nomadik-gpio: use clk API 2010-05-06 20:17:20 +01:00
mach-versatile Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
mach-vexpress
mach-w90x900 ARM: 6141/1: Add audio support part in arch/arm/mach-w90x900 2010-05-24 22:25:34 +01:00
mm ARM: 6139/1: ARMv7: Use the Inner Shareable I-cache on MP 2010-05-20 23:52:38 +01:00
nwfpe ARM: arch/arm/nwfpe/fpsr.h: Checkpatch cleanup 2010-05-24 20:40:12 +01:00
oprofile ARM: 6074/1: oprofile: convert from sysdev to platform device 2010-05-17 11:53:59 +01:00
plat-iop
plat-mxc Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel-stable 2010-05-20 23:43:18 +01:00
plat-nomadik Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2010-05-21 17:05:46 -07:00
plat-omap Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2010-05-21 14:46:51 -07:00
plat-orion mtd: orion/kirkwood: add RnB line support to orion mtd driver 2010-05-14 01:04:19 +01:00
plat-pxa Merge branch 'devel-stable' into devel 2010-05-17 17:24:04 +01:00
plat-s3c24xx ARM: SAMSUNG: Move WDT device definitions in plat-samsung 2010-05-20 19:44:18 +09:00
plat-s5p ARM: SAMSUNG: Fixup merge problem 2010-05-20 20:49:25 +09:00
plat-samsung Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2010-05-25 12:06:33 -07:00
plat-spear
plat-stmp3xxx
plat-versatile
tools
vfp
Kconfig Merge branch 'master' into devel 2010-05-24 23:08:54 +01:00
Kconfig-nommu
Kconfig.debug
Makefile Merge branch 'for-rmk/samsung3' of git://git.fluff.org/bjdooks/linux into devel-stable 2010-05-24 23:08:36 +01:00