Akinobu Mita d7be003a9d cma: make default CMA area size zero for x86 ... This makes CMA memory area size zero for x86 in default configuration (doesn't change on the other architectures). If default CMA size is zero, DMA_CMA is disabled. It can be enabled by passing cma= to the kernel. This makes less impact on x86. Because there is no mainline driver that requires it for x86, and Peter Hurley reported the performance regression, as this is trying to drive _all_ dma mapping allocations through a _very_ small window. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Reported-by: Peter Hurley <peter@hurleysoftware.com> Cc: Peter Hurley <peter@hurleysoftware.com> Cc: Chuck Ebbert <cebbert.lkml@gmail.com> Cc: Jean Delvare <jdelvare@suse.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Don Dutile <ddutile@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-12-10 17:41:06 -08:00
..
accessibility
acpi	ACPI / video: update condition to check if device is in _DOD list	2014-12-01 02:09:18 +01:00
amba	ARM: tegra: Move AHB Kconfig to drivers/amba	2014-11-26 09:43:25 +01:00
ata	SCSI for-linus on 20141208	2014-12-08 21:19:19 -08:00
atm	solos-pci: fix error return code	2014-11-23 14:29:44 -05:00
auxdisplay
base	cma: make default CMA area size zero for x86	2014-12-10 17:41:06 -08:00
bcma	bcma: add another PCI ID of device with BCM43228	2014-10-23 14:02:06 -04:00
block	Merge remote-tracking branch 'scsi-queue/core-for-3.19' into for-linus	2014-12-08 07:40:20 -08:00
bluetooth
bus	ARM: SoC driver updates for 3.19	2014-12-09 14:48:22 -08:00
cdrom
char	asm-generic: asm/io.h rewrite	2014-12-09 17:25:00 -08:00
clk	ARM: SoC driver updates for 3.19	2014-12-09 14:48:22 -08:00
clocksource	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 08:18:32 -08:00
connector
cpufreq	cpufreq: Avoid crash in resume on SMP without OPP	2014-11-08 02:10:04 +01:00
cpuidle	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2014-10-24 12:48:47 -07:00
crypto	crypto: caam - fix missing dma unmap on error path	2014-11-06 23:10:20 +08:00
dca
devfreq
dio
dma	Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma	2014-11-21 16:24:27 -08:00
dma-buf
edac	EDAC updates all over the place:	2014-12-08 20:17:49 -08:00
eisa
extcon
firewire	firewire: cdev: prevent kernel stack leaking into ioctl arguments	2014-11-14 12:10:13 +01:00
firmware	efi: efi-stub: notify on DTB absence	2014-11-05 09:03:34 +01:00
fmc
gpio	mfd: tc3589x: get rid of static base	2014-11-25 16:18:56 +00:00
gpu	Merge tag 'drm-intel-fixes-2014-12-04' of git://anongit.freedesktop.org/drm-intel into drm-fixes	2014-12-05 11:12:29 +10:00
hid	Hi Linus,	2014-12-08 20:02:54 -08:00
hsi
hv
hwmon	hwmon: (tmp401) Detect TMP435 on all addresses it supports	2014-12-08 06:48:37 -08:00
hwspinlock
i2c	Hi Linus,	2014-12-08 20:02:54 -08:00
ide
idle
iio	Hi Linus,	2014-12-08 20:02:54 -08:00
infiniband	Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus	2014-12-08 07:42:25 -08:00
input	drivers/input/evdev.c: don't kfree() a vmalloc address	2014-12-03 09:35:38 -08:00
iommu	Merge branch 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 09:01:01 -08:00
ipack
irqchip	Merge branch 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 09:01:01 -08:00
isdn
leds	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds	2014-10-21 08:18:38 -07:00
lguest
macintosh
mailbox	Merge branch 'mailbox-for-linus' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2014-10-21 11:21:19 -07:00
mcb
md	- Significant DM thin-provisioning performance improvements to meet	2014-12-08 21:10:03 -08:00
media	[media] rc-core: fix toggle handling in the rc6 decoder	2014-11-21 15:57:47 -02:00
memory	ARM: SoC/OMAP GPMC driver cleanup and move for 3.19	2014-12-09 16:57:56 -08:00
memstick
message	scsi: drop reason argument from ->change_queue_depth	2014-11-24 14:45:27 +01:00
mfd	Hi Linus,	2014-12-08 20:02:54 -08:00
misc	ARM: SoC cleanups for 3.19	2014-12-09 14:18:35 -08:00
mmc	mmc: sdhci-msm: Convert to mmc_send_tuning()	2014-12-08 09:21:06 +01:00
mtd	Three main MTD fixes for 3.18:	2014-11-02 14:45:52 -08:00
net	ARM: SoC cleanup on mach-at91 for 3.19	2014-12-09 14:17:12 -08:00
nfc
ntb
nubus	nubus: Remove superfluous interrupt disable/restore	2014-10-27 11:03:19 +01:00
of	Merge branch 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 09:01:01 -08:00
oprofile
parisc
parport
pci	Merge branch 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 09:01:01 -08:00
pcmcia
phy	phy: omap-usb2: Enable runtime PM of omap-usb2 phy properly	2014-11-05 14:34:06 -08:00
pinctrl	pinctrl: baytrail: show output gpio state correctly on Intel Baytrail	2014-10-28 11:16:26 +01:00
platform	platform: hp_accel: Add SERIO_I8042 as a dependency since it now includes i8042.h/serio.h	2014-11-10 21:16:15 -08:00
pnp
power	ARM: SoC platform changes for 3.19	2014-12-09 14:38:28 -08:00
powercap
pps
ps3
ptp
pwm	pwm: Changes for v3.18-rc1	2014-10-21 08:17:43 -07:00
rapidio
ras
regulator	regulator: Updates for v3.19	2014-12-08 20:42:41 -08:00
remoteproc
reset	Reset controller changes for v3.19	2014-12-04 16:57:36 +01:00
rpmsg
rtc	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 08:18:32 -08:00
s390	Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus	2014-12-08 07:42:25 -08:00
sbus
scsi	Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus	2014-12-08 07:42:25 -08:00
sfi
sh
sn
soc	ARM: SoC driver updates for 3.19	2014-12-09 14:48:22 -08:00
spi	Merge remote-tracking branches 'spi/fix/dw' and 'spi/fix/sirf' into spi-linus	2014-11-26 19:05:25 +00:00
spmi
ssb
staging	ARM: SoC DT updates for 3.19	2014-12-09 14:57:37 -08:00
target	Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus	2014-12-08 07:42:25 -08:00
tc
thermal	thermal: Exynos: Deletion of unnecessary checks before two function calls	2014-11-21 15:20:17 -04:00
thunderbolt
tty	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-09 21:21:34 -08:00
uio
usb	Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus	2014-12-08 07:42:25 -08:00
uwb
vfio	PCI/MSI: Rename write_msi_msg() to pci_write_msi_msg()	2014-11-23 13:01:45 +01:00
vhost	vhost-scsi: Take configfs group dependency during VHOST_SCSI_SET_ENDPOINT	2014-10-28 13:54:16 -07:00
video	ARM: SoC cleanup on mach-at91 for 3.19	2014-12-09 14:17:12 -08:00
virt
virtio
vlynq
vme
w1	w1: omap-hdq: support device probing with device-tree	2014-11-10 15:58:47 -08:00
watchdog	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 08:18:32 -08:00
xen	arm64 updates for 3.19	2014-12-09 13:12:47 -08:00
zorro
Kconfig	ARM: tegra: Move AHB Kconfig to drivers/amba	2014-11-26 09:43:25 +01:00
Makefile