Currently, the margin of cpu frequency raising and cpu overutilized are
hard-coded as 25% (1280/1024). Make the margin tunable
to control the aggressive for placement and frequency control. Such as
for power tuning framework could adjust smaller margin to slow down
frequency raising speed and let task stay in smaller cpu.

For light loading scenarios, like beach buggy blitz and messaging apps,
the app threads are moved big core with 25% margin and causing
unnecessary power.
With 0% capacity margin (1024/1024), the app threads could be kept in
little core and deliver better power results without any fps drop.

capacity margin        0%          10%          20%          30%
                     current        current       current      current
                  Fps  (mA)    Fps    (mA)   Fps   (mA)    Fps  (mA)
Beach buggy blitz  60 198.164  60   203.211  60   209.984  60  213.374
Yahoo browser      60 232.301 59.97 237.52  59.95 248.213  60  262.809

Change-Id: Iba48c556ed1b73c9a2699e9e809bc7d9333dc004
Signed-off-by: YT Chang <yt.chang@mediatek.com>

…sfs' into linux-next

* acpi-processor:
  ACPI: processor_throttling: Fix several coding style issues
  ACPI: processor_throttling: Remove redundant initialization of 'obj'

* acpi-pm:
  ACPI: sleep: Fix acpi_pm_pre_suspend() kernel-doc

* acpi-video:
  ACPI: video: Drop three redundant return statements

* acpi-sysfs:
  ACPI: sysfs: Drop four redundant return statements

Drop one redundant return statement and fix a few white space
issues.

Signed-off-by: Clayton Casciato <majortomtosourcecontrol@gmail.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Signed-off-by: Clayton Casciato <majortomtosourcecontrol@gmail.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Signed-off-by: Clayton Casciato <majortomtosourcecontrol@gmail.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Fix function name in sleep.c kernel-doc comment
to remove a warning found by running make W=1 LLVM=1.

drivers/acpi/sleep.c:413: warning: expecting prototype for
acpi_pre_suspend(). Prototype was for acpi_pm_pre_suspend() instead.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

'obj' is being initialized, however this value is never read as
'obj' is assigned an updated value later. Remove the redundant
initialization.

Clean up clang warning:
drivers/acpi/processor_throttling.c:409:20: warning: Value stored to
'obj' during its initialization is never read
[clang-analyzer-deadcode.DeadStores]

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

* pm-cpufreq-fixes:
  Revert "cpufreq: CPPC: Add support for frequency invariance"

This reverts commit 4c38f2d.

There are few races in the frequency invariance support for CPPC driver,
namely the driver doesn't stop the kthread_work and irq_work on policy
exit during suspend/resume or CPU hotplug.

A proper fix won't be possible for the 5.13-rc, as it requires a lot of
changes. Lets revert the patch instead for now.

Fixes: 4c38f2d ("cpufreq: CPPC: Add support for frequency invariance")
Reported-by: Qian Cai <quic_qiancai@quicinc.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

* pm-domains:
  PM: domains: Drop/restore performance state votes for devices at runtime PM
  PM: domains: Return early if perf state is already set for the device
  PM: domains: Split code in dev_pm_genpd_set_performance_state()
  PM: domains: fix some kernel-doc issues

* pm-cpufreq:
  cpufreq: loongson2: Remove unused linux/sched.h headers
  cpufreq: sh: Remove unused linux/sched.h headers
  cpufreq: stats: Clean up local variable in cpufreq_stats_create_table()
  cpufreq: intel_pstate: hybrid: Fix build with CONFIG_ACPI unset
  cpufreq: sc520_freq: add 'fallthrough' to one case
  cpufreq: intel_pstate: Add Cometlake support in no-HWP mode
  cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode
  cpufreq: intel_pstate: hybrid: CPU-specific scaling factor
  cpufreq: intel_pstate: hybrid: Avoid exposing two global attributes

* pm-cpuidle:
  cpuidle: teo: Use kerneldoc documentation in admin-guide
  cpuidle: teo: Rework most recent idle duration values treatment
  cpuidle: teo: Change the main idle state selection logic
  cpuidle: teo: Cosmetic modification of teo_select()
  cpuidle: teo: Cosmetic modifications of teo_update()
  intel_idle: Adjust the SKX C6 parameters if PC6 is disabled

* pm-core:
  PM: runtime: Clarify documentation when callbacks are unassigned
  PM: runtime: Allow unassigned ->runtime_suspend|resume callbacks
  PM: runtime: Improve path in rpm_idle() when no callback
  PM: runtime: document common mistake with pm_runtime_get_sync()

* pm-sleep:
  PM: hibernate: remove leading spaces before tabs
  PM: sleep: remove trailing spaces and tabs
  PM: hibernate: fix spelling mistakes
  PM: wakeirq: Set IRQF_NO_AUTOEN when requesting the IRQ

* pnp:
  PNP: pnpbios: Use list_for_each_entry() instead of list_for_each()
  PNP: use DEVICE_ATTR_RO macro
  PNP: Switch over to dev_dbg()
  PNP: Remove pnp_alloc()
  drivers: pnp: isapnp: proc.c: Remove unnecessary local variables

* acpi-messages:
  ACPI: Remove the macro PREFIX "ACPI: "
  ACPI: sleep: Unify the message printing
  ACPI: sbs: Unify the message printing
  ACPI: scan: Unify the log message printing
  ACPI: sbshc: Unify the message printing
  ACPI: sysfs: Cleanup message printing
  ACPI: reboot: Unify the message printing
  ACPI: processor_throttling: Cleanup the printing messages
  ACPI: processor_perflib: Cleanup print messages
  ACPI: processor_thermal: Remove unused PREFIX for printing
  ACPI: pci_root: Unify the message printing
  ACPI: osl: Remove the duplicated PREFIX for message printing
  ACPI: nvs: Unify the message printing
  ACPI: glue: Clean up the printing messages
  ACPI: event: Use pr_*() macros to replace printk()
  ACPI: bus: Use pr_*() macros to replace printk()
  ACPI: blacklist: Unify the message printing
  ACPI: cmos_rtc: Using pr_fmt() and remove PREFIX

* acpi-prm:
  ACPI: Add \_SB._OSC bit for PRM
  ACPI: PRM: implement OperationRegion handler for the PlatformRtMechanism subtype

… 'acpi-x86' into linux-next

* acpi-dptf:
  ACPI: DPTF: Add new PCH FIVR methods
  ACPI: DPTF: Add battery participant for Intel SoCs

* acpi-apei:
  ACPI: APEI: Don't warn if ACPI is disabled

* acpi-soc:
  ACPI: LPSS: Use kstrtol() instead of simple_strtol()

* acpi-sysfs:
  ACPI: sysfs: Fix a buffer overrun problem with description_show()

* acpi-x86:
  x86/acpi: Switch to pr_xxx log functions

…isc' into linux-next

* acpi-tables:
  ACPI: tables: FPDT: Add missing acpi_put_table() in acpi_init_fpdt()
  ACPI: tables: PPTT: Populate cache-id if provided by firmware

* acpi-ec:
  ACPI: EC: Make more Asus laptops use ECDT _GPE

* acpi-resources:
  ACPI: resources: Add checks for ACPI IRQ override

* acpi-misc:
  ACPI: NUMA: fix typo in a comment
  ACPI: OSL: Use DEFINE_RES_IO_NAMED() to simplify code
  ACPI: bus: Call kobject_put() in acpi_init() error path
  ACPI: bus: Remove unneeded assignment
  ACPI: configfs: Replace ACPI_INFO() with pr_debug()
  ACPI: ipmi: Remove address space handler in error path
  ACPI: event: Remove redundant initialization of local variable
  ACPI: sbshc: Fix fall-through warning for Clang

…' into linux-next

* acpi-bus:
  ACPI: Remove redundant clearing of context->ret.pointer from acpi_run_osc()

* acpi-scan:
  ACPI: scan: initialize local variable to avoid garbage being returned
  ACPI: scan: Add function to fetch dependent of ACPI device
  ACPI: scan: Extend acpi_walk_dep_device_list()
  ACPI: scan: Rearrange dep_unmet initialization

* acpi-pm:
  ACPI: power: Rework turning off unused power resources
  ACPI: power: Save the last known state of each power resource
  ACPI: power: Use u8 as the power resource state data type
  ACPI: PM / fan: Put fan device IDs into separate header file
  ACPI: PM: s2idle: Add missing LPS0 functions for AMD

* acpi-processor:
  ACPI: processor idle: Fix up C-state latency if not ordered

* acpica:
  ACPICA: Add PRMT module header to facilitate parsing
  ACPICA: Update version to 20210604
  ACPICA: Add support for PlatformRtMechanism OperationRegion handler
  ACPICA: iASL: add disassembler support for PRMT
  ACPICA: Add the CFMWS structure definition to the CEDT table
  ACPICA: Add defines for the CXL Host Bridge Structure (CHBS)
  ACPICA: iASL: Add support for the BDAT ACPI table
  ACPICA: Add _PLD panel positions
  ACPICA: Use ACPI_FALLTHROUGH
  ACPICA: iASL Table Compiler: Add full support for RGRT ACPI table
  ACPICA: iASL: Add support for the SVKL table
  ACPICA: iASL: Finish support for the IVRS ACPI table
  ACPICA: Fix memory leak caused by _CID repair function
  ACPICA: Add SVKL table headers
  ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Mailbox Structure

* devprop:
  device property: Unify access to of_node
  ACPI: scan: Constify acpi_dma_supported() helper function
  ACPI: property: Constify stubs for CONFIG_ACPI=n case
  ACPI: IORT: Handle device properties with software node API
  device property: Retrieve fwnode from of_node via accessor

….org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Correct buffer copying when peeking events

 - Sync cpufeatures/disabled-features.h header with the kernel sources

* tag 'perf-tools-fixes-for-v5.13-2021-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  tools headers cpufeatures: Sync with the kernel sources
  perf session: Correct buffer copying when peeking events

…y/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

  Stable fixes:

   - Fix use-after-free in nfs4_init_client()

  Bugfixes:

   - Fix deadlock between nfs4_evict_inode() and nfs4_opendata_get_inode()

   - Fix second deadlock in nfs4_evict_inode()

   - nfs4_proc_set_acl should not change the value of NFS_CAP_UIDGID_NOMAP

   - Fix setting of the NFS_CAP_SECURITY_LABEL capability"

* tag 'nfs-for-5.13-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Fix second deadlock in nfs4_evict_inode()
  NFSv4: Fix deadlock between nfs4_evict_inode() and nfs4_opendata_get_inode()
  NFS: FMODE_READ and friends are C macros, not enum types
  NFS: Fix a potential NULL dereference in nfs_get_client()
  NFS: Fix use-after-free in nfs4_init_client()
  NFS: Ensure the NFS_CAP_SECURITY_LABEL capability is set when appropriate
  NFSv4: nfs4_proc_set_acl needs to restore NFS_CAP_UIDGID_NOMAP on error.

…it/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Four reasonably small fixes to the core for scsi host allocation
  failure paths.

  The root problem is that we're not freeing the memory allocated by
  dev_set_name(), which involves a rejig of may of the free on error
  paths to do put_device() instead of kfree which, in turn, has several
  other knock on ramifications and inspection turned up a few other
  lurking bugs"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: core: Only put parent device if host state differs from SHOST_CREATED
  scsi: core: Put .shost_dev in failure path if host state changes to RUNNING
  scsi: core: Fix failure handling of scsi_add_host_with_dma()
  scsi: core: Fix error handling of scsi_host_alloc()

…linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A pair of XIP fixes: one to fix alternatives, and one to turn off the
   rest of the features that require code modification

 - A fix to a type that was causing some alternatives to break

 - A build fix for BUILTIN_DTB

* tag 'riscv-for-linus-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: Fix BUILTIN_DTB for sifive and microchip soc
  riscv: alternative: fix typo in macro name
  riscv: code patching only works on !XIP_KERNEL
  riscv: xip: support runtime trap patching

0day robot reported a 9.2% regression for will-it-scale mmap1 test
case[1], caused by commit 57efa1f ("mm/gup: prevent gup_fast from
racing with COW during fork").

Further debug shows the regression is due to that commit changes the
offset of hot fields 'mmap_lock' inside structure 'mm_struct', thus some
cache alignment changes.

From the perf data, the contention for 'mmap_lock' is very severe and
takes around 95% cpu cycles, and it is a rw_semaphore

        struct rw_semaphore {
                atomic_long_t count;	/* 8 bytes */
                atomic_long_t owner;	/* 8 bytes */
                struct optimistic_spin_queue osq; /* spinner MCS lock */
                ...

Before commit 57efa1f adds the 'write_protect_seq', it happens to
have a very optimal cache alignment layout, as Linus explained:

 "and before the addition of the 'write_protect_seq' field, the
  mmap_sem was at offset 120 in 'struct mm_struct'.

  Which meant that count and owner were in two different cachelines,
  and then when you have contention and spend time in
  rwsem_down_write_slowpath(), this is probably *exactly* the kind
  of layout you want.

  Because first the rwsem_write_trylock() will do a cmpxchg on the
  first cacheline (for the optimistic fast-path), and then in the
  case of contention, rwsem_down_write_slowpath() will just access
  the second cacheline.

  Which is probably just optimal for a load that spends a lot of
  time contended - new waiters touch that first cacheline, and then
  they queue themselves up on the second cacheline."

After the commit, the rw_semaphore is at offset 128, which means the
'count' and 'owner' fields are now in the same cacheline, and causes
more cache bouncing.

Currently there are 3 "#ifdef CONFIG_XXX" before 'mmap_lock' which will
affect its offset:

  CONFIG_MMU
  CONFIG_MEMBARRIER
  CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES

The layout above is on 64 bits system with 0day's default kernel config
(similar to RHEL-8.3's config), in which all these 3 options are 'y'.
And the layout can vary with different kernel configs.

Relayouting a structure is usually a double-edged sword, as sometimes it
can helps one case, but hurt other cases.  For this case, one solution
is, as the newly added 'write_protect_seq' is a 4 bytes long seqcount_t
(when CONFIG_DEBUG_LOCK_ALLOC=n), placing it into an existing 4 bytes
hole in 'mm_struct' will not change other fields' alignment, while
restoring the regression.

Link: https://lore.kernel.org/lkml/20210525031636.GB7744@xsang-OptiPlex-9020/ [1]
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

…/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of tiny USB fixes for 5.13-rc6.

  There are more than I would normally like, but there's been a bunch of
  people banging on the gadget and dwc3 and typec code recently for I
  think an Android release, which has resulted in a number of small
  fixes. It's nice to see companies send fixes upstream for this type of
  work, a notable change from years ago.

  Anyway, fixes in here are:

   - usb-serial device id updates

   - usb-serial cp210x driver fixes for broken firmware versions

   - typec fixes for crazy charging devices and other reported problems

   - dwc3 fixes for reported problems found

   - gadget fixes for reported problems

   - tiny xhci fixes

   - other small fixes for reported issues.

   - revert of a problem fix found by linux-next testing

  All of these have passed 0-day and linux-next testing with no reported
  problems (the revert for the found linux-next build problem included)"

* tag 'usb-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (44 commits)
  Revert "usb: gadget: fsl: Re-enable driver for ARM SoCs"
  usb: typec: mux: Fix copy-paste mistake in typec_mux_match
  usb: typec: ucsi: Clear PPM capability data in ucsi_init() error path
  usb: gadget: fsl: Re-enable driver for ARM SoCs
  usb: typec: wcove: Use LE to CPU conversion when accessing msg->header
  USB: serial: cp210x: fix CP2102N-A01 modem control
  USB: serial: cp210x: fix alternate function for CP2102N QFN20
  usb: misc: brcmstb-usb-pinmap: check return value after calling platform_get_resource()
  usb: dwc3: ep0: fix NULL pointer exception
  usb: gadget: eem: fix wrong eem header operation
  usb: typec: intel_pmc_mux: Put ACPI device using acpi_dev_put()
  usb: typec: intel_pmc_mux: Add missed error check for devm_ioremap_resource()
  usb: typec: intel_pmc_mux: Put fwnode in error case during ->probe()
  usb: typec: tcpm: Do not finish VDM AMS for retrying Responses
  usb: fix various gadget panics on 10gbps cabling
  usb: fix various gadgets null ptr deref on 10gbps cabling.
  usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
  usb: f_ncm: only first packet of aggregate needs to start timer
  USB: f_ncm: ncm_bitrate (speed) is unsigned
  MAINTAINERS: usb: add entry for isp1760
  ...

…/git/gregkh/tty

Pull serial driver fix from Greg KH:
 "A single 8250_exar serial driver fix for a reported problem with a
  change that happened in 5.13-rc1.

  It has been in linux-next with no reported problems"

* tag 'tty-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: 8250_exar: Avoid NULL pointer dereference at ->exit()

…rnel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Two tiny staging driver fixes:

   - ralink-gdma driver authorship information fixed up

   - rtl8723bs driver fix for reported regression

  Both have been in linux-next for a while with no reported problems"

* tag 'staging-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: ralink-gdma: Remove incorrect author information
  staging: rtl8723bs: Fix uninitialized variables

…x/kernel/git/gregkh/driver-core

Pull driver core fix from Greg KH:
 "A single debugfs fix for 5.13-rc6, fixing a bug in
  debugfs_read_file_str() that showed up in 5.13-rc1.

  It has been in linux-next for a full week with no
  reported problems"

* tag 'driver-core-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  debugfs: Fix debugfs_read_file_str()

…kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small misc driver fixes for 5.13-rc6 that fix some
  reported problems:

   - Tiny phy driver fixes for reported issues

   - rtsx regression for when the device suspended

   - mhi driver fix for a use-after-free

  All of these have been in linux-next for a few days with no reported
  issues"

* tag 'char-misc-5.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  misc: rtsx: separate aspm mode into MODE_REG and MODE_CFG
  bus: mhi: pci-generic: Fix hibernation
  bus: mhi: pci_generic: Fix possible use-after-free in mhi_pci_remove()
  bus: mhi: pci_generic: T99W175: update channel name from AT to DUN
  phy: Sparx5 Eth SerDes: check return value after calling platform_get_resource()
  phy: ralink: phy-mt7621-pci: drop 'of_match_ptr' to fix -Wunused-const-variable
  phy: ti: Fix an error code in wiz_probe()
  phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init()
  phy: cadence: Sierra: Fix error return code in cdns_sierra_phy_probe()
  phy: usb: Fix misuse of IS_ENABLED

…nel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:

 - Fix some documentation warnings for Allwinner

 - Fix duplicated GPIO groups on Qualcomm SDX55

 - Fix a double enablement bug in the Ralink driver

 - Fix the Qualcomm SC8180x Kconfig so the driver can be selected.

* tag 'pinctrl-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: qcom: Make it possible to select SC8180x TLMM
  pinctrl: ralink: rt2880: avoid to error in calls is pin is already enabled
  pinctrl: qcom: Fix duplication in gpio_groups
  pinctrl: aspeed: Fix minor documentation error

Pull block fixes from Jens Axboe:
 "A few fixes that should go into 5.13:

   - Fix a regression deadlock introduced in this release between open
     and remove of a bdev (Christoph)

   - Fix an async_xor md regression in this release (Xiao)

   - Fix bcache oversized read issue (Coly)"

* tag 'block-5.13-2021-06-12' of git://git.kernel.dk/linux-block:
  block: loop: fix deadlock between open and remove
  async_xor: check src_offs is not NULL before updating it
  bcache: avoid oversized read request in cache missing code path
  bcache: remove bcache device self-defined readahead

Pull io_uring fixes from Jens Axboe:
 "Just an API change for the registration changes that went into this
  release. Better to get it sorted out now than before it's too late"

* tag 'io_uring-5.13-2021-06-12' of git://git.kernel.dk/linux-block:
  io_uring: add feature flag for rsrc tags
  io_uring: change registration/upd/rsrc tagging ABI

…inux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixes:

   - Fix performance regression caused by lack of intended batching of
     RCU callbacks by over-eager NOHZ-full code.

   - Fix cgroups related corruption of load_avg and load_sum metrics.

   - Three fixes to fix blocked load, util_sum/runnable_sum and util_est
     tracking bugs"

* tag 'sched-urgent-2021-06-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Fix util_est UTIL_AVG_UNCHANGED handling
  sched/pelt: Ensure that *_sum is always synced with *_avg
  tick/nohz: Only check for RCU deferred wakeup on user/guest entry when needed
  sched/fair: Make sure to update tg contrib for blocked load
  sched/fair: Keep load_avg and load_sum synced