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
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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	…