Commit 103916ff authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux 

Pull arm64 updates from Will Deacon:
 "The most interesting parts are probably the mm changes from Ryan which
  optimise the creation of the linear mapping at boot and (separately)
  implement write-protect support for userfaultfd.

  Outside of our usual directories, the Kbuild-related changes under
  scripts/ have been acked by Masahiro whilst the drivers/acpi/ parts
  have been acked by Rafael and the addition of cpumask_any_and_but()
  has been acked by Yury.

  ACPI:

   - Support for the Firmware ACPI Control Structure (FACS) signature
     feature which is used to reboot out of hibernation on some systems

  Kbuild:

   - Support for building Flat Image Tree (FIT) images, where the kernel
     Image is compressed alongside a set of devicetree blobs

  Memory management:

   - Optimisation of our early page-table manipulation for creation of
     the linear mapping

   - Support for userfaultfd write protection, which brings along some
     nice cleanups to our handling of invalid but present ptes

   - Extend our use of range TLBI invalidation at EL1

  Perf and PMUs:

   - Ensure that the 'pmu->parent' pointer is correctly initialised by
     PMU drivers

   - Avoid allocating 'cpumask_t' types on the stack in some PMU drivers

   - Fix parsing of the CPU PMU "version" field in assembly code, as it
     doesn't follow the usual architectural rules

   - Add best-effort unwinding support for USER_STACKTRACE

   - Minor driver fixes and cleanups

  Selftests:

   - Minor cleanups to the arm64 selftests (missing NULL check, unused
     variable)

  Miscellaneous:

   - Add a command-line alias for disabling 32-bit application support

   - Add part number for Neoverse-V2 CPUs

   - Minor fixes and cleanups"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (64 commits)
  arm64/mm: Fix pud_user_accessible_page() for PGTABLE_LEVELS <= 2
  arm64/mm: Add uffd write-protect support
  arm64/mm: Move PTE_PRESENT_INVALID to overlay PTE_NG
  arm64/mm: Remove PTE_PROT_NONE bit
  arm64/mm: generalize PMD_PRESENT_INVALID for all levels
  arm64: simplify arch_static_branch/_jump function
  arm64: Add USER_STACKTRACE support
  arm64: Add the arm64.no32bit_el0 command line option
  drivers/perf: hisi: hns3: Actually use devm_add_action_or_reset()
  drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group
  drivers/perf: hisi_pcie: Fix out-of-bound access when valid event group
  kselftest: arm64: Add a null pointer check
  arm64: defer clearing DAIF.D
  arm64: assembler: update stale comment for disable_step_tsk
  arm64/sysreg: Update PIE permission encodings
  kselftest/arm64: Remove unused parameters in abi test
  perf/arm-spe: Assign parents for event_source device
  perf/arm-smmuv3: Assign parents for event_source device
  perf/arm-dsu: Assign parents for event_source device
  perf/arm-dmc620: Assign parents for event_source device
  ...
parents 1338acfe 54e1a2aa

Documentation/admin-guide/kernel-parameters.txt

+3 −0
Original line number Diff line number Diff line
@@ -431,6 +431,9 @@ 
	arcrimi=	[HW,NET] ARCnet - "RIM I" (entirely mem-mapped) cards

			Format: <io>,<irq>,<nodeID>



	arm64.no32bit_el0 [ARM64] Unconditionally disable the execution of

			32 bit applications.



	arm64.nobti	[ARM64] Unconditionally disable Branch Target

			Identification support

Documentation/admin-guide/perf/hisi-pmu.rst

+0 −1
Original line number Diff line number Diff line
@@ -20,7 +20,6 @@ interrupt, and the PMU driver shall register perf PMU drivers like L3C, 
HHA and DDRC etc. The available events and configuration options shall

be described in the sysfs, see:



/sys/devices/hisi_sccl{X}_<l3c{Y}/hha{Y}/ddrc{Y}>/, or

/sys/bus/event_source/devices/hisi_sccl{X}_<l3c{Y}/hha{Y}/ddrc{Y}>.

The "perf list" command shall list the available events from sysfs.

Documentation/admin-guide/perf/hns3-pmu.rst

+4 −4
Original line number Diff line number Diff line
@@ -16,7 +16,7 @@ HNS3 PMU driver 


The HNS3 PMU driver registers a perf PMU with the name of its sicl id.::



  /sys/devices/hns3_pmu_sicl_<sicl_id>

  /sys/bus/event_source/devices/hns3_pmu_sicl_<sicl_id>



PMU driver provides description of available events, filter modes, format,

identifier and cpumask in sysfs.
@@ -40,9 +40,9 @@ device. 


Example usage of checking event code and subevent code::



  $# cat /sys/devices/hns3_pmu_sicl_0/events/dly_tx_normal_to_mac_time

  $# cat /sys/bus/event_source/devices/hns3_pmu_sicl_0/events/dly_tx_normal_to_mac_time

  config=0x00204

  $# cat /sys/devices/hns3_pmu_sicl_0/events/dly_tx_normal_to_mac_packet_num

  $# cat /sys/bus/event_source/devices/hns3_pmu_sicl_0/events/dly_tx_normal_to_mac_packet_num

  config=0x10204



Each performance statistic has a pair of events to get two values to
@@ -60,7 +60,7 @@ computation to calculate real performance data is::: 


Example usage of checking supported filter mode::



  $# cat /sys/devices/hns3_pmu_sicl_0/filtermode/bw_ssu_rpu_byte_num

  $# cat /sys/bus/event_source/devices/hns3_pmu_sicl_0/filtermode/bw_ssu_rpu_byte_num

  filter mode supported: global/port/port-tc/func/func-queue/



Example usage of perf::

Documentation/admin-guide/perf/qcom_l2_pmu.rst

+1 −1
Original line number Diff line number Diff line
@@ -10,7 +10,7 @@ There is one logical L2 PMU exposed, which aggregates the results from 
the physical PMUs.



The driver provides a description of its available events and configuration

options in sysfs, see /sys/devices/l2cache_0.

options in sysfs, see /sys/bus/event_source/devices/l2cache_0.



The "format" directory describes the format of the events.

Documentation/admin-guide/perf/qcom_l3_pmu.rst

+1 −1
Original line number Diff line number Diff line
@@ -9,7 +9,7 @@ PMU with device name l3cache_<socket>_<instance>. User space is responsible 
for aggregating across slices.



The driver provides a description of its available events and configuration

options in sysfs, see /sys/devices/l3cache*. Given that these are uncore PMUs

options in sysfs, see /sys/bus/event_source/devices/l3cache*. Given that these are uncore PMUs

the driver also exposes a "cpumask" sysfs attribute which contains a mask

consisting of one CPU per socket which will be used to handle all the PMU

events on that socket.