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kernel_xiaomi_sm8250/drivers/acpi
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Joerg Roedel 6c1051ffc7 x86/mm: split vmalloc_sync_all() 
commit 763802b53a427ed3cbd419dbba255c414fdd9e7c upstream.

Commit 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in
__purge_vmap_area_lazy()") introduced a call to vmalloc_sync_all() in
the vunmap() code-path.  While this change was necessary to maintain
correctness on x86-32-pae kernels, it also adds additional cycles for
architectures that don't need it.

Specifically on x86-64 with CONFIG_VMAP_STACK=y some people reported
severe performance regressions in micro-benchmarks because it now also
calls the x86-64 implementation of vmalloc_sync_all() on vunmap().  But
the vmalloc_sync_all() implementation on x86-64 is only needed for newly
created mappings.

To avoid the unnecessary work on x86-64 and to gain the performance
back, split up vmalloc_sync_all() into two functions:

	* vmalloc_sync_mappings(), and
	* vmalloc_sync_unmappings()

Most call-sites to vmalloc_sync_all() only care about new mappings being
synchronized.  The only exception is the new call-site added in the
above mentioned commit.

Shile Zhang directed us to a report of an 80% regression in reaim
throughput.

Fixes: 3f8fd02b1bf1 ("mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy()")
Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Borislav Petkov <bp@suse.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>	[GHES]
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20191009124418.8286-1-joro@8bytes.org
Link: https://lists.01.org/hyperkitty/list/lkp@lists.01.org/thread/4D3JPPHBNOSPFK2KEPC6KGKS6J25AIDB/
Link: http://lkml.kernel.org/r/20191113095530.228959-1-shile.zhang@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-25 08:06:13 +01:00
..
acpica
ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1
2020-02-24 08:34:43 +01:00
apei
x86/mm: split vmalloc_sync_all()
2020-03-25 08:06:13 +01:00
arm64
ACPI/IORT: Fix off-by-one check in iort_dev_find_its_id()
2019-08-16 10:12:48 +02:00
dptf
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nfit
acpi/nfit: Always dump _DSM output payload
2019-05-16 19:41:19 +02:00
pmic
ACPI / PMIC: xpower: Fix TS-pin current-source handling
2019-01-16 22:04:34 +01:00
x86
x86/cpu: Sanitize FAM6_ATOM naming
2019-05-14 19:17:53 +02:00
ac.c
Merge tag 'acpi-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2018-06-05 10:08:27 -07:00
acpi_amba.c
…
acpi_apd.c
ACPI: APD: Add AMD misc clock handler support
2018-05-17 12:44:06 +02:00
acpi_cmos_rtc.c
…
acpi_configfs.c
ACPI: configfs: make config_item_type const
2017-10-19 16:15:29 +02:00
acpi_dbg.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
acpi_extlog.c
…
acpi_ipmi.c
…
acpi_lpat.c
ACPI / lpat: Fix typos in comments and kerneldoc style
2017-07-24 22:52:00 +02:00
acpi_lpit.c
ACPI / PM: LPIT: Register sysfs attributes based on FADT
2018-11-13 11:08:24 -08:00
acpi_lpss.c
ACPI: PM: Introduce "poweroff" callbacks for ACPI PM domain and LPSS
2020-01-27 14:51:00 +01:00
acpi_memhotplug.c
mm/memory_hotplug: make remove_memory() take the device_hotplug_lock
2020-01-29 16:43:24 +01:00
acpi_pad.c
ACPI: acpi_pad: Fix memory leak in power saving threads
2018-03-30 12:04:58 +02:00
acpi_platform.c
ACPI / platform: Add SMB0001 HID to forbidden_id_list
2018-11-27 16:13:10 +01:00
acpi_pnp.c
…
acpi_processor.c
ACPI / processor: don't print errors for processorIDs == 0xff
2019-10-05 13:09:38 +02:00
acpi_tad.c
ACPI: Add Time and Alarm Device (TAD) driver
2018-03-20 10:36:04 +01:00
acpi_video.c
ACPI: video: Add new hw_changes_brightness quirk, set it on PB Easynote MZ35
2019-10-01 08:26:11 +02:00
acpi_watchdog.c
ACPI: watchdog: Allow disabling WDAT at boot
2020-03-20 11:55:52 +01:00
battery.c
ACPI / battery: Deal better with neither design nor full capacity not being reported
2020-02-11 04:33:59 -08:00
bgrt.c
…
blacklist.c
ACPI: blacklist: fix clang warning for unused DMI table
2019-08-06 19:06:50 +02:00
bus.c
ACPI: bus: Fix NULL pointer check in acpi_bus_get_private_data()
2019-12-17 20:35:05 +01:00
button.c
ACPI: button: Add DMI quirk for Razer Blade Stealth 13 late 2019 lid switch
2020-02-24 08:34:45 +01:00
cm_sbs.c
…
container.c
…
cppc_acpi.c
ACPI: CPPC: Set pcc_data[pcc_ss_id] to NULL in acpi_cppc_processor_exit()
2019-10-29 09:19:52 +01:00
custom_method.c
ACPI: custom_method: fix memory leaks
2019-10-05 13:09:53 +02:00
debugfs.c
…
device_pm.c
ACPI: PM: Introduce "poweroff" callbacks for ACPI PM domain and LPSS
2020-01-27 14:51:00 +01:00
device_sysfs.c
ACPI / device_sysfs: Avoid OF modalias creation for removed device
2019-03-23 20:09:57 +01:00
dock.c
ACPI: Mark expected switch fall-throughs
2017-11-09 00:55:16 +01:00
ec_sys.c
ACPI: EC: Fix debugfs_create_*() usage
2018-01-04 13:54:51 +01:00
ec.c
Revert "ACPI / EC: Remove old CLEAR_ON_RESUME quirk"
2019-04-20 09:16:04 +02:00
event.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
evged.c
ACPI: GED: unregister interrupts during shutdown
2017-12-16 03:05:37 +01:00
fan.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
glue.c
…
hed.c
…
internal.h
ACPI: EC / PM: Disable non-wakeup GPEs for suspend-to-idle
2019-04-20 09:16:03 +02:00
ioapic.c
…
irq.c
ACPI / irq: Fix return code of acpi_gsi_to_irq()
2017-07-12 13:11:49 +02:00
Kconfig
ACPI: fix menuconfig presentation of ACPI submenu
2018-08-23 10:20:07 +02:00
Makefile
ACPI: Enable PPTT support on ARM64
2018-05-17 17:28:09 +01:00
numa.c
ACPI: NUMA: Use correct type for printing addresses on i386-PAE
2019-02-20 10:25:39 +01:00
nvs.c
…
osi.c
ACPI / OSI: Add OEM _OSI string to enable NVidia HDMI audio
2018-07-20 10:12:41 +02:00
osl.c
ACPI: OSL: only free map once in osl.c
2019-12-17 20:35:05 +01:00
pci_irq.c
ACPI / PCI: fix acpi_pci_irq_enable() memory leak
2019-10-05 13:09:53 +02:00
pci_link.c
ACPI / PCI: pci_link: Allow the absence of _PRS and change log level
2018-02-27 17:15:39 +01:00
pci_mcfg.c
…
pci_root.c
PCI/ACPI: Correct error message for ASPM disabling
2019-11-20 18:46:52 +01:00
pci_slot.c
dmi: Mark all struct dmi_system_id instances const
2017-09-14 11:59:30 +02:00
power.c
ACPI: power: Skip duplicate power resource references in _PRx
2019-01-16 22:04:33 +01:00
pptt.c
ACPI/PPTT: Add support for ACPI 6.3 thread flag
2019-10-17 13:45:34 -07:00
proc.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
processor_core.c
xen/ACPI: don't upload Px/Cx data for disabled processors
2018-08-20 14:46:18 -04:00
processor_driver.c
ACPI: processor: use dev_dbg() instead of dev_warn() when CPPC probe failed
2017-07-27 01:51:06 +02:00
processor_idle.c
Merge tag 'acpi-part2-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2018-02-09 09:44:25 -08:00
processor_pdc.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
processor_perflib.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
processor_thermal.c
…
processor_throttling.c
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
property.c
ACPI / property: fix handling of data_nodes in acpi_get_next_subnode()
2019-05-31 06:46:11 -07:00
reboot.c
ACPI: add missing newline to printk
2018-05-02 13:01:08 +02:00
resource.c
ACPI: Mark expected switch fall-throughs
2017-11-09 00:55:16 +01:00
sbs.c
ACPI / SBS: Fix GPE storm on recent MacBookPro's
2019-04-20 09:16:01 +02:00
sbshc.c
ACPI / SBS: Fix rare oops when removing modules
2019-11-24 08:20:31 +01:00
sbshc.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
scan.c
ACPI / scan: Create platform device for INT33FE ACPI nodes
2019-12-01 09:16:35 +01:00
sleep.c
ACPI: PM: Set enable_for_wake for wakeup GPEs during suspend-to-idle
2019-05-22 07:37:41 +02:00
sleep.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
spcr.c
ACPI: SPCR: Consider baud rate 0 as preconfigured state
2019-02-12 19:47:02 +01:00
sysfs.c
ACPI: sysfs: Change ACPI_MASKABLE_GPE_MAX to 0x100
2020-01-09 10:19:04 +01:00
tables.c
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2018-06-08 11:10:58 -07:00
thermal.c
dmi: Mark all struct dmi_system_id instances const
2017-09-14 11:59:30 +02:00
utils.c
ACPI / utils: Drop reference in test for device presence
2019-04-20 09:15:58 +02:00
video_detect.c
ACPI: video: Do not export a non working backlight interface on MSI MS-7721 boards
2020-02-11 04:33:59 -08:00
wakeup.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00