leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
d6aba4c8e2
linux/drivers
History
Joao Martins 14606001ef device-dax: compound devmap support 
Use the newly added compound devmap facility which maps the assigned dax
ranges as compound pages at a page size of @align.

dax devices are created with a fixed @align (huge page size) which is
enforced through as well at mmap() of the device.  Faults, consequently
happen too at the specified @align specified at the creation, and those
don't change throughout dax device lifetime.  MCEs unmap a whole dax
huge page, as well as splits occurring at the configured page size.

Performance measured by gup_test improves considerably for
unpin_user_pages() and altmap with NVDIMMs:

  $ gup_test -f /dev/dax1.0 -m 16384 -r 10 -S -a -n 512 -w
  (pin_user_pages_fast 2M pages) put:~71 ms -> put:~22 ms
  [altmap]
  (pin_user_pages_fast 2M pages) get:~524ms put:~525 ms -> get: ~127ms put:~71ms

   $ gup_test -f /dev/dax1.0 -m 129022 -r 10 -S -a -n 512 -w
  (pin_user_pages_fast 2M pages) put:~513 ms -> put:~188 ms
  [altmap with -m 127004]
  (pin_user_pages_fast 2M pages) get:~4.1 secs put:~4.12 secs -> get:~1sec put:~563ms

.. as well as unpin_user_page_range_dirty_lock() being just as effective
as THP/hugetlb[0] pages.

[0] https://lore.kernel.org/linux-mm/20210212130843.13865-5-joao.m.martins@oracle.com/

Link: https://lkml.kernel.org/r/20211202204422.26777-12-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Jane Chu <jane.chu@oracle.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-01-15 16:30:26 +02:00
..
accessibility
acpi Merge branch 'acpi-properties' 2021-11-26 19:45:31 +01:00
amba ARM: 9119/1: amba: Properly handle device probe without IRQ domain 2021-10-19 10:30:53 +01:00
android binder: fix async_free_space accounting for empty parcels 2021-12-21 11:07:34 +01:00
ata libata: if T_LENGTH is zero, dma direction should be DMA_NONE 2021-12-17 09:32:13 +09:00
atm
auxdisplay auxdisplay: charlcd: checking for pointer reference before dereferencing 2021-11-24 11:46:52 +01:00
base PM: sleep: Fix error handling in dpm_prepare() 2021-12-17 18:36:08 +01:00
bcma pci-v5.16-changes 2021-11-06 14:36:12 -07:00
block xen/blkfront: harden blkfront against event channel storms 2021-12-16 08:24:08 +01:00
bluetooth TTY / Serial driver update for 5.16-rc1 2021-11-04 09:09:37 -07:00
bus Some new drivers changes for the Allwinner SoCs, fixing the shutdown 2021-12-17 16:04:54 +01:00
cdrom for-5.16/cdrom-2021-10-29 2021-11-01 10:09:14 -07:00
char Fix some IPMI crashes 2021-12-22 10:11:17 -08:00
clk clk: Don't parent clks until the parent is fully registered 2021-12-07 19:20:35 -08:00
clocksource clocksource/drivers/arm_arch_timer: Force inlining of erratum_set_next_event_generic() 2021-12-10 17:47:00 +01:00
comedi comedi: dt9812: fix DMA buffers on stack 2021-10-30 10:54:47 +02:00
connector
counter counter: Fix use-after-free race condition for events_queue_size write 2021-10-21 13:02:47 +02:00
cpufreq cpufreq: Fix a comment in cpufreq_policy_free 2021-12-01 20:02:11 +01:00
cpuidle ARM: SoC drivers for 5.16 2021-11-03 17:00:52 -07:00
crypto crypto: qat - do not handle PFVF sources for qat_4xxx 2021-12-17 13:11:54 +11:00
cxl cxl for v5.16 2021-11-08 11:49:48 -08:00
dax device-dax: compound devmap support 2022-01-15 16:30:26 +02:00
dca
devfreq Merge branches 'pm-opp' and 'pm-cpufreq' 2021-11-10 14:06:51 +01:00
dio
dma dmaengine: st_fdma: fix MODULE_ALIAS 2021-12-13 13:18:48 +05:30
dma-buf dma-buf: system_heap: Use 'for_each_sgtable_sg' in pages free flow 2021-12-01 15:30:10 +05:30
edac EDAC/i10nm: Release mdev/mbase when failing to detect HBM 2022-01-04 09:08:00 -08:00
eisa
extcon extcon: usbc-tusb320: Add support for TUSB320L 2021-10-27 14:13:39 +09:00
firewire SCSI misc on 20211105 2021-11-05 08:42:02 -07:00
firmware firmware: arm_scpi: Fix string overflow in SCPI genpd driver 2021-12-13 15:17:37 +01:00
fpga
fsi fsi: sbefifo: Use interruptible mutex locking 2021-10-22 09:54:33 +10:30
gnss
gpio gpio: gpio-aspeed-sgpio: Fix wrong hwirq base in irq handler 2022-01-03 10:50:12 +01:00
gpu Revert "drm/amdgpu: stop scheduler when calling hw_fini (v2)" 2022-01-09 10:32:16 -08:00
greybus
hid HID: potential dereference of null pointer 2021-12-20 11:26:14 +01:00
hsi HSI changes for the 5.16 series 2021-11-04 13:56:55 -07:00
hv hv: utils: add PTP_1588_CLOCK to Kconfig to fix build 2021-11-28 21:22:35 +00:00
hwmon hwmon: (lm90) Do not report 'busy' status bit as alarm 2021-12-12 16:22:53 -08:00
hwspinlock
hwtracing coresight: trbe: Work around write to out of range 2021-10-27 11:46:01 -06:00
i2c Revert "i2c: core: support bus regulator controlling in adapter" 2022-01-07 21:27:15 +01:00
i3c
idle
iio iio: trigger: stm32-timer: fix MODULE_ALIAS 2021-12-04 15:37:02 +00:00
infiniband RDMA/siw: make use of the helper function kthread_run_on_cpu() 2022-01-15 16:30:23 +02:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2022-01-09 10:49:12 -08:00
interconnect
iommu iommu/vt-d: Fix unmap_pages support 2021-11-26 22:54:47 +01:00
ipack
irqchip irqchip/irq-bcm7120-l2: Add put_device() after of_find_device_by_node() 2021-12-10 13:23:13 +00:00
isdn mISDN: change function names to avoid conflicts 2021-12-28 12:12:04 +00:00
leds
macintosh Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
mailbox mailbox: imx: support i.MX8ULP S4 MU 2021-10-29 23:03:09 -05:00
mcb
md block-5.16-2022-01-07 2022-01-07 13:28:20 -08:00
media media fixes for v5.16-rc3 2021-11-22 14:58:57 -08:00
memory memory: mtk-smi: Fix a null dereference for the ostd 2021-11-25 14:46:00 +01:00
memstick memstick: r592: Fix a UAF bug when removing the driver 2021-10-19 13:04:42 +02:00
message pci-v5.16-changes 2021-11-06 14:36:12 -07:00
mfd chrome platform changes for 5.16 2021-11-10 11:36:43 -08:00
misc misc: rtsx: Avoid mangling IRQ during runtime PM 2021-12-03 14:32:00 +01:00
mmc mmc: mmci: stm32: clear DLYB_CR after sending tuning command 2021-12-21 13:03:51 +01:00
most most: fix control-message timeouts 2021-10-26 19:12:01 +02:00
mtd Revert "mtd_blkdevs: don't scan partitions for plain mtdblock" 2021-12-10 11:52:34 -07:00
mux mux: add support for delay after muxing 2021-10-21 20:02:42 +01:00
net Revert "net: usb: r8152: Add MAC passthrough support for more Lenovo Docks" 2022-01-05 10:11:40 -08:00
nfc NFC: st21nfca: Fix memory leak in device probe and remove 2021-12-28 12:40:20 +00:00
ntb
nubus
nvdimm libnvdimm for v5.16 2021-11-10 10:56:02 -08:00
nvme nvmet-tcp: fix possible list corruption for unexpected command failure 2021-12-08 16:36:58 +01:00
nvmem Merge 5.15-rc6 into char-misc-next 2021-10-18 09:29:27 +02:00
of mm: kmemleak: alloc gray object for reserved region with direct map 2022-01-15 16:30:25 +02:00
opp
parisc
parport
pci - Clear the PCI_MSIX_FLAGS_MASKALL bit too on the error path so that it 2021-12-19 12:28:46 -08:00
pcmcia Core: 2021-11-02 06:20:58 -07:00
perf ACPI updates for 5.16-rc1 2021-11-02 15:58:39 -07:00
phy phy: HiSilicon: Fix copy and paste bug in error handling 2021-11-23 10:42:13 +05:30
pinctrl pinctrl: stm32: consider the GPIO offset to expose all the GPIO lines 2021-12-16 04:14:56 +01:00
platform platform-drivers-x86 for v5.16-4 2021-12-24 08:58:23 -08:00
pnp
power power: reset: ltc2952: Fix use of floating point literals 2021-11-16 15:22:39 +01:00
powercap powercap: DTPM: Drop unused local variable from init_dtpm() 2021-12-03 17:51:59 +01:00
pps
ps3
ptp ptp: ocp: Fix a couple NULL vs IS_ERR() checks 2021-11-18 12:12:55 +00:00
pwm pwm: vt8500: Rename pwm_busy_wait() to make it obviously driver-specific 2021-11-05 11:57:13 +01:00
rapidio rapidio: avoid bogus __alloc_size warning 2021-11-06 13:30:33 -07:00
ras
regulator - Remove Drivers 2021-11-08 12:07:52 -08:00
remoteproc
reset reset: renesas: Fix Runtime PM usage 2021-12-15 11:20:30 +01:00
rpmsg remoteproc updates for v5.16 2021-11-10 09:07:26 -08:00
rtc RTC for 5.16 2021-11-12 11:44:31 -08:00
s390 s390: replace snprintf in show functions with sysfs_emit 2021-11-16 12:29:19 +01:00
sbus
scsi SCSI fixes on 20211231 2021-12-31 09:22:25 -08:00
sh
siox
slimbus
soc soc/tegra: Fixes for v5.16-rc6 2021-12-16 15:02:26 +01:00
soundwire soundwire: qcom: add debugfs entry for soundwire register dump 2021-10-20 20:54:59 +05:30
spi spi: Fix for v5.16 2021-12-20 10:23:19 -08:00
spmi
ssb
staging staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() 2021-11-17 14:08:57 +01:00
target scsi: target: configfs: Delete unnecessary checks for NULL 2021-11-18 23:07:02 -05:00
tc
tee ARM: SoC fixes for 5.16, part 4 2021-12-23 09:22:34 -08:00
thermal thermal: int340x: Fix VCoRefLow MMIO bit offset for TGL 2021-12-08 15:29:22 +01:00
thunderbolt thunderbolt: Changes for v5.16 merge window 2021-10-25 13:17:29 +02:00
tty Merge branch 'xsa' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip 2021-12-20 07:42:21 -08:00
uio Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM 2021-10-28 11:22:23 +00:00
usb usb: typec: ucsi: Only check the contract if there is a connection 2021-12-21 16:30:53 +01:00
vdpa vdpa: Consider device id larger than 31 2021-12-08 15:41:50 -05:00
vfio vfio/pci: Fix OpRegion read 2021-11-30 11:41:49 -07:00
vhost vdpa: check that offsets are within bounds 2021-12-08 14:53:15 -05:00
video fbdev: fbmem: add a helper to determine if an aperture is used by a fw fb 2021-12-31 08:57:45 -05:00
virt nitro_enclaves: Use get_user_pages_unlocked() call to handle mmap assert 2021-12-21 11:08:19 +01:00
virtio virtio_ring: Fix querying of maximum DMA mapping size for virtio device 2021-12-08 15:04:06 -05:00
visorbus
vlynq
vme
w1
watchdog linux-watchdog 5.16-rc1 tag 2021-11-10 09:41:22 -08:00
xen xen/console: harden hvc_xen against event channel storms 2021-12-16 08:24:08 +01:00
zorro
Kconfig
Makefile virtio: always enter drivers/virtio/ 2021-12-08 14:53:15 -05:00