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Chris Wilson 920cf41949 drm/i915: Introduce an internal allocator for disposable private objects 
Quite a few of our objects used for internal hardware programming do not
benefit from being swappable or from being zero initialised. As such
they do not benefit from using a shmemfs backing storage and since they
are internal and never directly exposed to the user, we do not need to
worry about providing a filp. For these we can use an
drm_i915_gem_object wrapper around a sg_table of plain struct page. They
are not swap backed and not automatically pinned. If they are reaped
by the shrinker, the pages are released and the contents discarded. For
the internal use case, this is fine as for example, ringbuffers are
pinned from being written by a request to be read by the hardware. Once
they are idle, they can be discarded entirely. As such they are a good
match for execlist ringbuffers and a small variety of other internal
objects.

In the first iteration, this is limited to the scratch batch buffers we
use (for command parsing and state initialisation).

v2: Allocate physically contiguous pages, where possible.
v3: Reduce maximum order on subsequent requests following an allocation
failure.
v4: Fix up mismatch between swiotlb segment size and page count (it
counts in 2k units, not 4k pages)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-7-chris@chris-wilson.co.uk
 		2016-10-28 20:53:44 +01:00
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accessibility
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acpi More ACPI updates for v4.9-rc1 2016-10-14 12:50:05 -07:00
amba
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android
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ata ahci: qoriq: Revert "ahci: qoriq: Disable NCQ on ls2080a SoC" 2016-09-30 10:28:51 +02:00
atm
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auxdisplay auxdisplay: img-ascii-lcd: driver for simple ASCII LCD displays 2016-10-06 17:03:41 +02:00
base dma-buf: Rename struct fence to dma_fence 2016-10-25 14:40:39 +02:00
bcma
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block rbd: don't retry watch reregistration if header object is gone 2016-10-15 23:22:09 +02:00
bluetooth Bluetooth: btusb: Fix atheros firmware download error 2016-10-07 09:46:56 +02:00
bus ARM: SoC driver updates for v4.9 2016-10-07 21:23:40 -07:00
cdrom
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char A small bug fix and a new driver for acting as an IPMI device. 2016-10-23 15:56:23 -07:00
clk ARM: SoC: late DT updates for v4.9 2016-10-07 21:34:49 -07:00
clocksource Revert "clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init" 2016-10-20 21:58:58 +02:00
connector
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cpufreq More power management updates for v4.9-rc1 2016-10-14 12:46:13 -07:00
cpuidle Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-10-10 14:04:16 -07:00
dax Merge branch 'for-4.9/dax' into libnvdimm-for-next 2016-10-07 16:46:30 -07:00
dca
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devfreq PM / devfreq: Skip status update on uninitialized previous_freq 2016-10-11 00:01:20 +02:00
dio
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dma dmaengine updates for 4.8-rc1 2016-10-06 17:13:54 -07:00
dma-buf dma-buf: Rename struct fence to dma_fence 2016-10-25 14:40:39 +02:00
edac * Altera Arria10 enablement of NAND, DMA, USB, QSPI and SD-MMC FIFO 2016-10-04 12:06:26 -07:00
eisa
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extcon
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firewire firewire: nosy: do not ignore errors in ioremap_nocache() 2016-10-09 11:38:11 +02:00
firmware efi/arm: Fix absolute relocation detection for older toolchains 2016-10-19 14:49:44 +02:00
fmc
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fpga
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gpio gpio: pca953x: add a comment explaining the need for a lockdep subclass 2016-10-11 23:17:08 +02:00
gpu drm/i915: Introduce an internal allocator for disposable private objects 2016-10-28 20:53:44 +01:00
hid HID: add quirk for Akai MIDImix. 2016-10-10 10:58:22 +02:00
hsi
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hv Drivers: hv: get rid of id in struct vmbus_channel 2016-09-27 12:35:49 +02:00
hwmon hwmon: (max31790) potential ERR_PTR dereference 2016-10-17 10:16:20 -07:00
hwspinlock
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hwtracing
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i2c i2c: 'i2c-bus' node support for v4.8-rc1 2016-10-11 23:37:26 +02:00
ide
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idle nmi_backtrace: generate one-line reports for idle cpus 2016-10-07 18:46:30 -07:00
iio Staging/IIO patches for 4.9-rc1 2016-10-05 14:50:51 -07:00
infiniband Merge branch 'gup_flag-cleanups' 2016-10-19 08:39:47 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2016-10-14 13:19:30 -07:00
iommu IOMMU Updates for Linux v4.9 2016-10-11 12:52:41 -07:00
ipack
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irqchip GIC updates for Linux 4.9-rc2 2016-10-21 21:40:29 +02:00
isdn
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leds leds: triggers: Check return value of kobject_uevent_env() 2016-09-20 10:22:10 +02:00
lguest
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lightnvm Merge branch 'for-4.9/block' of git://git.kernel.dk/linux-block 2016-10-07 14:42:05 -07:00
macintosh powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
mailbox Merge branch 'mailbox-for-next' of git://git.linaro.org/landing-teams/working/fujitsu/integration 2016-10-06 17:36:53 -07:00
mcb mcb: Add a dma_device to mcb_device 2016-09-27 12:33:47 +02:00
md kthread: kthread worker API cleanup 2016-10-11 15:06:33 -07:00
media Merge branch 'gup_flag-cleanups' 2016-10-19 08:39:47 -07:00
memory ARM: SoC driver updates for v4.9 2016-10-07 21:23:40 -07:00
memstick memstick: rtsx_usb_ms: Manage runtime PM when accessing the device 2016-10-17 15:43:05 +02:00
message
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mfd - Core Frameworks 2016-10-07 08:35:35 -07:00
misc powerpc fixes for 4.9 #3 2016-10-21 19:13:00 -07:00
mmc mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led 2016-10-17 15:43:03 +02:00
mtd UBI: Fix crash in try_recover_peb() 2016-10-20 00:06:06 +02:00
net Merge of the qedr RoCE driver 2016-10-14 13:43:08 -07:00
nfc
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ntb
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nubus
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nvdimm Merge branch 'for-4.9/dax' into libnvdimm-for-next 2016-10-07 16:46:30 -07:00
nvme Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2016-10-21 10:54:01 -07:00
nvmem ARM: SoC driver updates for v4.9 2016-10-07 21:23:40 -07:00
of Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
oprofile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
parisc
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parport
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pci PCI: designware-plat: Update author email address 2016-10-21 09:54:46 -05:00
pcmcia pcmcia: soc_common: add driver-data pointer 2016-09-22 09:39:16 +01:00
perf perf: xgene: Remove bogus IS_ERR() check 2016-10-17 15:50:07 +01:00
phy
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pinctrl pinctrl: intel: Only restore pins that are used by the driver 2016-10-18 14:38:16 +02:00
platform platform-drivers-x86 for 4.9-2 2016-10-19 11:45:06 -07:00
pnp
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power power supply and reset changes for the v4.9 series 2016-10-06 18:21:15 -07:00
powercap
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pps pps: kc: fix non-tickless system config dependency 2016-10-11 15:06:32 -07:00
ps3 powerpc: Remove all usages of NO_IRQ 2016-09-20 20:57:12 +10:00
ptp drivers/ptp: Fix kernel memory disclosure 2016-10-13 10:20:06 -04:00
pwm
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rapidio mm: replace get_user_pages() write/force parameters with gup_flags 2016-10-19 08:11:43 -07:00
ras
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regulator Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2016-10-12 11:05:23 -07:00
remoteproc rpmsg updates for v4.9 2016-10-06 17:03:49 -07:00
reset
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rpmsg
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rtc RTC for 4.9 2016-10-14 13:13:44 -07:00
s390 scsi: zfcp: spin_lock_irqsave() is not nestable 2016-10-14 16:21:08 -04:00
sbus
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scsi SCSI fixes on 20161021 2016-10-21 10:57:09 -07:00
sfi
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sh
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sn
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soc powerpc updates for 4.9 #2 2016-10-14 11:07:42 -07:00
spi kthread: kthread worker API cleanup 2016-10-11 15:06:33 -07:00
spmi spmi: pmic-arb: Return an error code if sanity check fails 2016-09-27 12:43:34 +02:00
ssb
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staging mm: replace get_user_pages() write/force parameters with gup_flags 2016-10-19 08:11:43 -07:00
target target/tcm_fc: use CPU affinity for responses 2016-10-21 01:19:44 -07:00
tc
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thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2016-10-12 11:05:23 -07:00
thunderbolt
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tty kthread: kthread worker API cleanup 2016-10-11 15:06:33 -07:00
uio
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usb Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
uwb
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vfio vfio_pci: use pci_alloc_irq_vectors 2016-09-29 13:36:38 -06:00
vhost
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video Merge tag 'topic/drm-misc-2016-10-24' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-10-25 16:35:20 +10:00
virt mm: replace get_user_pages() write/force parameters with gup_flags 2016-10-19 08:11:43 -07:00
virtio
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vlynq
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vme vme: fake: remove unexpected unlock in fake_master_set() 2016-09-27 12:43:35 +02:00
w1
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watchdog Merge branches 'acpi-wdat' and 'acpi-cppc' 2016-10-21 22:24:23 +02:00
xen xen: features and fixes for 4.9-rc0 2016-10-06 11:19:10 -07:00
zorro
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Kconfig
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Makefile A small bug fix and a new driver for acting as an IPMI device. 2016-10-23 15:56:23 -07:00