Граф коммитов

929865 Коммитов

Автор SHA1 Сообщение Дата
Bjorn Helgaas b9fcf4910b Merge branch 'remotes/lorenzo/pci/dwc'
- Simplify computation of msix_tbl (Jiri Slaby)

  - Make hisi_pcie_platform_ops static (Zou Wei)

  - Warn about resources above 4G (Alan Mikhak)

  - Make intel_pcie_cpu_addr() static (Jason Yan)

  - Use devm_platform_ioremap_resource_byname() to simplify code and
    improve error checking (Wei Yongjun)

  - Fix inner MSI IRQ domain registration so it doesn't confuse debugfs
    (Marc Zyngier)

  - Don't use FAST_LINK_MODE on meson (Marc Zyngier)

  - Add Socionext UniPhier Pro5 PCIe endpoint controller driver and DT
    description (Kunihiko Hayashi)

* remotes/lorenzo/pci/dwc:
  PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver
  dt-bindings: PCI: Add UniPhier PCIe endpoint controller description
  PCI: dwc: Use private data pointer of "struct irq_domain" to get pcie_port
  PCI: amlogic: meson: Don't use FAST_LINK_MODE to set up link
  PCI: dwc: Fix inner MSI IRQ domain registration
  PCI: dwc: pci-dra7xx: Use devm_platform_ioremap_resource_byname()
  PCI: dwc: intel: Make intel_pcie_cpu_addr() static
  PCI: dwc: Program outbound ATU upper limit register
  PCI: dwc: Make hisi_pcie_platform_ops static
  PCI: dwc: Clean up computing of msix_tbl
2020-06-04 12:59:15 -05:00
Bjorn Helgaas 712879510f Merge branch 'remotes/lorenzo/pci/cadence'
- Deprecate 'cdns,max-outbound-regions' and 'cdns,no-bar-match-nbits'
    bindings in favor of deriving them from 'ranges' and 'dma-ranges'
    (Kishon Vijay Abraham I)

  - Read Vendor and Device ID as 32 bits (not 16) from DT (Kishon Vijay
    Abraham I)

* remotes/lorenzo/pci/cadence:
  PCI: cadence: Fix to read 32-bit Vendor ID/Device ID property from DT
  PCI: cadence: Remove "cdns,max-outbound-regions" DT property
  dt-bindings: PCI: cadence: Deprecate inbound/outbound specific bindings
2020-06-04 12:59:15 -05:00
Bjorn Helgaas a1dcc1aa6f Merge branch 'remotes/lorenzo/pci/brcmstb'
- Assert fundamental reset on initialization (Nicolas Saenz Julienne)

  - Remove unnecessary clk_put(); devm_clk_get() handles this automatically
    (Jim Quinlan)

  - Fix outbound memory window register stride offset (Jim Quinlan)

  - Add "aspm-no-l0s" property for brcmstb and disable ASPM L0s when
    present (Jim Quinlan)

  - Add property to notify Raspberry Pi firmware of xHCI reset (Nicolas
    Saenz Julienne)

  - Add Raspberry Pi VL805 xHCI init function to trigger VL805 firmware
    load (Nicolas Saenz Julienne)

  - Wait in brcmstb probe for Raspberry Pi VL805 firmware initialization
    (Nicolas Saenz Julienne)

  - Load Raspberry Pi VL805 firmware in USB early handoff quirk (Nicolas
    Saenz Julienne)

* remotes/lorenzo/pci/brcmstb:
  USB: pci-quirks: Add Raspberry Pi 4 quirk
  PCI: brcmstb: Wait for Raspberry Pi's firmware when present
  firmware: raspberrypi: Introduce vl805 init routine
  soc: bcm2835: Add notify xHCI reset property
  PCI: brcmstb: Disable L0s component of ASPM if requested
  dt-bindings: PCI: brcmstb: New prop 'aspm-no-l0s'
  PCI: brcmstb: Fix window register offset from 4 to 8
  PCI: brcmstb: Don't clk_put() a managed clock
  PCI: brcmstb: Assert fundamental reset on initialization
2020-06-04 12:59:14 -05:00
Bjorn Helgaas 754262d1be Merge branch 'remotes/lorenzo/pci/altera'
- Fix altera whitespace (Colin Ian King)

* remotes/lorenzo/pci/altera:
  PCI: altera: Clean up indentation issue on a return statement
2020-06-04 12:59:14 -05:00
Bjorn Helgaas 075a383389 Merge branch 'remotes/lorenzo/pci/aardvark'
- Train link immediately after enabling link training to avoid issues
    with Compex WLE900VX and Turris MOX devices (Pali Rohár)

  - Remove ASPM config and let the PCI core do it (Pali Rohár)

  - Interpret zero 'max-link-speed' value as invalid (Pali Rohár)

  - Respect the 'max-link-speed' property and improve link training (Marek
    Behún)

  - Issue PERST via GPIO (Pali Rohár)

  - Add PHY support (Marek Behún)

  - Use standard PCIe capability macros (Pali Rohár)

  - Document new 'max-link-speed', 'phys', and 'reset-gpios' properties
    (Marek Behún)

* remotes/lorenzo/pci/aardvark:
  dt-bindings: PCI: aardvark: Describe new properties
  PCI: aardvark: Replace custom macros by standard linux/pci_regs.h macros
  PCI: aardvark: Add PHY support
  PCI: aardvark: Add FIXME comment for PCIE_CORE_CMD_STATUS_REG access
  PCI: aardvark: Issue PERST via GPIO
  PCI: aardvark: Improve link training
  PCI: of: Zero max-link-speed value is invalid
  PCI: aardvark: Don't blindly enable ASPM L0s and don't write to read-only register
  PCI: aardvark: Train link immediately after enabling training
2020-06-04 12:59:14 -05:00
Bjorn Helgaas 39a1af7619 Merge branch 'pci/virtualization'
- Remove unused xen_register_pirq() parameter (Wei Liu)

  - Quirk AMD Matisse HD Audio & USB 3.0 devices where FLR hangs the device
    (Marcos Scriven)

  - Quirk AMD Starship USB 3.0 device where FLR doesn't seem to work (Kevin
    Buettner)

  - Add ACS quirk for Intel RCiEPs (Ashok Raj)

* pci/virtualization:
  PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints
  PCI: Avoid FLR for AMD Starship USB 3.0
  PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0
  x86/PCI: Drop unused xen_register_pirq() gsi_override parameter
2020-06-04 12:59:13 -05:00
Bjorn Helgaas 0085090d7d Merge branch 'pci/switchtec'
- Fix a minor bool type issue (Krzysztof Wilczynski)

* pci/switchtec:
  PCI/switchtec: Correct bool variable type assignment
2020-06-04 12:59:13 -05:00
Bjorn Helgaas b16666b853 Merge branch 'pci/resource'
- Allow resizing BARs of devices on root bus (Ard Biesheuvel)

* pci/resource:
  PCI: Allow pci_resize_resource() for devices on root bus
2020-06-04 12:59:12 -05:00
Bjorn Helgaas ae7322a06d Merge branch 'pci/pm'
- Check .bridge_d3() hook for NULL before calling it (Bjorn Helgaas)

  - Disable PME# for Pericom OHCI/UHCI USB controllers because it's
    not reliably asserted on USB hotplug (Kai-Heng Feng)

  - Assume ports without DLL Link Active train links in 100 ms to work
    around Thunderbolt bridge defects (Mika Westerberg)

* pci/pm:
  PCI/PM: Assume ports without DLL Link Active train links in 100 ms
  PCI/PM: Adjust pcie_wait_for_link_delay() for caller delay
  PCI: Avoid Pericom USB controller OHCI/EHCI PME# defect
  serial: 8250_pci: Move Pericom IDs to pci_ids.h
  PCI/PM: Call .bridge_d3() hook only if non-NULL
2020-06-04 12:59:12 -05:00
Bjorn Helgaas ff33cc2fc0 Merge branch 'pci/p2pdma'
- Add AMD Zen Raven and Renoir Root Ports to P2PDMA whitelist (Alex
    Deucher)

* pci/p2pdma:
  PCI/P2PDMA: Add AMD Zen Raven and Renoir Root Ports to whitelist
2020-06-04 12:59:11 -05:00
Bjorn Helgaas 9f91d05e4a Merge branch 'pci/misc'
- Clarify that platform_get_irq() should never return 0 (Bjorn Helgaas)

  - Check for platform_get_irq() failure consistently (Bjorn Helgaas)

  - Replace zero-length array with flexible-array (Gustavo A. R. Silva)

  - Unify pcie_find_root_port() and pci_find_pcie_root_port() (Yicong Yang)

  - Quirk Intel C620 MROMs, which have non-BARs in BAR locations (Xiaochun
    Lee)

  - Fix pcie_pme_resume() and pcie_pme_remove() kernel-doc (Jay Fang)

  - Rename _DSM constants to align with spec (Krzysztof Wilczyński)

* pci/misc:
  PCI: Rename _DSM constants to align with spec
  PCI/PME: Fix kernel-doc of pcie_pme_resume() and pcie_pme_remove()
  x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs
  PCI: Unify pcie_find_root_port() and pci_find_pcie_root_port()
  PCI: Replace zero-length array with flexible-array
  PCI: Check for platform_get_irq() failure consistently
  driver core: platform: Clarify that IRQ 0 is invalid
2020-06-04 12:59:11 -05:00
Bjorn Helgaas 08d6c8fca7 Merge branch 'pci/kconfig'
- Remove unnecessary "default y" Kconfig options (Bjorn Helgaas)

* pci/kconfig:
  PCI/AER: Don't select CONFIG_PCIEAER by default
  PCI: keystone: Don't select CONFIG_PCI_KEYSTONE_HOST by default
  PCI: dra7xx: Don't select CONFIG_PCI_DRA7XX_HOST by default
2020-06-04 12:59:10 -05:00
Bjorn Helgaas 1a765adf33 Merge branch 'pci/hotplug'
- Remove unused pciehp EMI() and HP_SUPR_RM() macros (Ani Sinha)

  - Use of_node_name_eq() for node name comparisons (Rob Herring)

  - Convert shpchp_unconfigure_device() to void (Krzysztof Wilczynski)

* pci/hotplug:
  PCI: shpchp: Make shpchp_unconfigure_device() void
  PCI: Use of_node_name_eq() for node name comparisons
  PCI: pciehp: Remove unused EMI() and HP_SUPR_RM() macros
2020-06-04 12:59:10 -05:00
Bjorn Helgaas 8810a9c4f1 Merge branch 'pci/error'
- Log only ACPI_NOTIFY_DISCONNECT_RECOVER events for EDR, not all ACPI
    SYSTEM-level events (Kuppuswamy Sathyanarayanan)

  - Rely only on _OSC (not _OSC + HEST FIRMWARE_FIRST) to negotiate AER
    Capability ownership (Alexandru Gagniuc)

  - Remove HEST/FIRMWARE_FIRST parsing that was previously used to help
    intuit AER Capability ownership (Kuppuswamy Sathyanarayanan)

  - Remove redundant pci_is_pcie() and dev->aer_cap checks (Kuppuswamy
    Sathyanarayanan)

  - Print IRQ number used by DPC (Yicong Yang)

* pci/error:
  PCI/DPC: Print IRQ number used by port
  PCI/AER: Use "aer" variable for capability offset
  PCI/AER: Remove redundant dev->aer_cap checks
  PCI/AER: Remove redundant pci_is_pcie() checks
  PCI/AER: Remove HEST/FIRMWARE_FIRST parsing for AER ownership
  PCI/AER: Use only _OSC to determine AER ownership
  PCI/EDR: Log only ACPI_NOTIFY_DISCONNECT_RECOVER events
2020-06-04 12:59:09 -05:00
Bjorn Helgaas 8ab064e931 Merge branch 'pci/enumeration'
- Fix pci_register_host_bridge() device_register() error handling (Rob
    Herring)

  - Fix pci_host_bridge struct device release/free handling (Rob Herring)

  - Program MPS for RCiEP devices (Ashok Raj)

  - Inherit PTM settings from Switch Upstream Port so we can enable PTM on
    Endpoints (Bjorn Helgaas)

  - Add #defines for bridge windows (PCI_BRIDGE_IO_WINDOW,
    PCI_BRIDGE_MEM_WINDOW, etc) (Krzysztof Wilczynski)

* pci/enumeration:
  pcmcia: Use CardBus window names (PCI_CB_BRIDGE_IO_0_WINDOW etc) when freeing
  PCI: Use bridge window names (PCI_BRIDGE_IO_WINDOW etc)
  PCI/PTM: Inherit Switch Downstream Port PTM settings from Upstream Port
  PCI: Program MPS for RCiEP devices
  PCI: Fix pci_host_bridge struct device release/free handling
  PCI: Fix pci_register_host_bridge() device_register() error handling
2020-06-04 12:59:09 -05:00
Bjorn Helgaas 15d5a0157f Merge branch 'pci/aspm'
- Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges (Kai-Heng Feng)

* pci/aspm:
  PCI/ASPM: Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges
2020-06-04 12:59:09 -05:00
Linus Torvalds 9875b201e0 chrome platform changes for 5.8
* cros_ec_typec
 - Add notifier for update, and register port partner
 
 * Sensors/iio:
 - Fixes to cros_ec_sensorhub around allocation of resources, and send_sample.
 
 * Wilco EC
 - Fix to output format of h1_gpio
 
 * Misc
 - Misc fixes to appease kernel-doc and other warnings.
 - Set user space log size in chromeos_pstore
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Merge tag 'tag-chrome-platform-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Benson Leung:
 "cros_ec_typec:
   - Add notifier for update, and register port partner

  Sensors/iio:
   - Fixes to cros_ec_sensorhub around allocation of resources, and
     send_sample

  Wilco EC:
   - Fix to output format of h1_gpio

  Misc:
   - Misc fixes to appease kernel-doc and other warnings
   - Set user space log size in chromeos_pstore"

* tag 'tag-chrome-platform-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_usbpd_logger: Add __printf annotation to append_str()
  platform/chrome: cros_ec_i2c: Appease the kernel-doc deity
  platform/chrome: typec: Fix ret value check error
  platform/chrome: cros_ec_typec: Register port partner
  platform/chrome: cros_ec_typec: Add struct for port data
  platform/chrome: cros_ec_typec: Use notifier for updates
  platform/chrome: cros_ec_ishtp: free ishtp buffer before sending event
  platform/chrome: cros_ec_ishtp: skip old cros_ec responses
  platform/chrome: wilco_ec: Provide correct output format to 'h1_gpio' file
  platform/chrome: chromeos_pstore: set user space log size
2020-06-04 10:54:45 -07:00
Linus Torvalds 0486a39a6d linux-watchdog 5.8-rc1 tag
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Merge tag 'linux-watchdog-5.8-rc1' of git://www.linux-watchdog.org/linux-watchdog

Pull watchdog updates from Wim Van Sebroeck:

 - add new arm_smc_wdt watchdog driver

 - da9062 and da9063 improvements

 - clarify documentation about stop() that became optional

 - document r8a7742 support

 - some overall fixes and improvements

* tag 'linux-watchdog-5.8-rc1' of git://www.linux-watchdog.org/linux-watchdog:
  watchdog: m54xx: Add missing include
  dt-bindings: watchdog: renesas,wdt: Document r8a7742 support
  watchdog: Fix runtime PM imbalance on error
  watchdog: riowd: remove unneeded semicolon
  watchdog: Add new arm_smc_wdt watchdog driver
  dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog
  watchdog: imx2_wdt: update contact email
  watchdog: iTCO: fix link error
  watchdog: da9062: No need to ping manually before setting timeout
  watchdog: da9063: Make use of pre-configured timeout during probe
  watchdog: da9062: Initialize timeout during probe
  watchdog: clarify that stop() is optional
  watchdog: imx_sc_wdt: Fix reboot on crash
  watchdog: ts72xx_wdt: fix build error
2020-06-04 10:50:22 -07:00
Linus Torvalds 302d5b3321 - Core Frameworks
- Add backlight_device_get_by_name() to the API
 
 - New Device Support
    - Add support for WLED5 to Qualcomm WLED
 
  - Fix-ups
    - Convert to GPIO descriptors; l4f00242t03
    - Device Tree fix-ups; qcom-wled
 
  - Bug Fixes
    - Properly disable regulators on .probe() failure
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Merge tag 'backlight-next-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Core Framework:
   - Add backlight_device_get_by_name() to the API

  New Device Support:
   - Add support for WLED5 to Qualcomm WLED

  Fix-ups:
   - Convert to GPIO descriptors in l4f00242t03
   - Device Tree fix-ups for qcom-wled

  Bug Fixes:
   - Properly disable regulators on .probe() failure"

* tag 'backlight-next-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: Add backlight_device_get_by_name()
  backlight: qcom-wled: Add support for WLED5 peripheral that is present on PM8150L PMICs
  dt-bindings: backlight: qcom-wled: Add WLED5 bindings
  backlight: qcom-wled: Add callback functions
  dt-bindings: backlight: qcom-wled: Convert the wled bindings to .yaml format
  backlight: l4f00242t03: Convert to GPIO descriptors
  backlight: lp855x: Ensure regulators are disabled on probe failure
2020-06-04 10:43:07 -07:00
Linus Torvalds 512b7d37ee - Core Frameworks
- Constify 'properties' attribute in core header file
 
  - New Drivers
    - Add support for Gateworks System Controller
    - Add support for MediaTek MT6358 PMIC
    - Add support for Mediatek MT6360 PMIC
    - Add support for Monolithic Power Systems MP2629 ADC and Battery charger
    - Rework Intel's SCU IPC collection
      - Eliminate near duplicate IPC functionality
      - Split out MFD related activities into a dedicated MFD driver
 
  - Fix-ups
    - Use new I2C API; htc-i2cpld
    - Remove superfluous code; sprd-sc27xx-spi
    - Improve error handling; stm32-timers
    - Device Tree additions/fixes; mt6397
    - Defer probe betterment; wm8994-core
    - Improve module handling; wm8994-core
    - Staticify; stpmic1
    - Trivial (spelling, formatting); tqmx86
 
  - Bug Fixes
    - Fix incorrect register/PCI IDs; intel-lpss-pci
    - Fix unbalanced Regulator API calls; wm8994-core
    - Fix double free(); wcd934x
    - Remove IRQ domain on failure; stmfx
    - Reset chip on resume; stmfx
    - Disable/enable IRQs on suspend/resume; stmfx
    - Do not use bulk writes on H/W which does not support them; max77620
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Merge tag 'mfd-next-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Core Frameworks:
   - Constify 'properties' attribute in core header file

  New Drivers:
   - Add support for Gateworks System Controller
   - Add support for MediaTek MT6358 PMIC
   - Add support for Mediatek MT6360 PMIC
   - Add support for Monolithic Power Systems MP2629 ADC and Battery charger

  Fix-ups:
   - Use new I2C API in htc-i2cpld
   - Remove superfluous code in sprd-sc27xx-spi
   - Improve error handling in stm32-timers
   - Device Tree additions/fixes in mt6397
   - Defer probe betterment in wm8994-core
   - Improve module handling in wm8994-core
   - Staticify in stpmic1
   - Trivial (spelling, formatting) in tqmx86

  Bug Fixes:
   - Fix incorrect register/PCI IDs in intel-lpss-pci
   - Fix unbalanced Regulator API calls in wm8994-core
   - Fix double free() in wcd934x
   - Remove IRQ domain on failure in stmfx
   - Reset chip on resume in stmfx
   - Disable/enable IRQs on suspend/resume in stmfx
   - Do not use bulk writes on H/W which does not support them in max77620"

* tag 'mfd-next-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (29 commits)
  mfd: mt6360: Remove duplicate REGMAP_IRQ_REG_LINE() entry
  mfd: Add support for PMIC MT6360
  mfd: max77620: Use single-byte writes on MAX77620
  mfd: wcd934x: Drop kfree for memory allocated with devm_kzalloc
  mfd: stmfx: Disable IRQ in suspend to avoid spurious interrupt
  mfd: stmfx: Fix stmfx_irq_init error path
  mfd: stmfx: Reset chip on resume as supply was disabled
  mfd: wm8994: Silence warning about supplies during deferred probe
  mfd: wm8994: Fix unbalanced calls to regulator_bulk_disable()
  mfd: wm8994: Fix driver operation if loaded as modules
  dt-bindings: mfd: mediatek: Add MT6397 Pin Controller
  mfd: Constify properties in mfd_cell
  mfd: stm32-timers: Use dma_request_chan() instead dma_request_slave_channel()
  mfd: sprd: Remove unnecessary spi_bus_type setting
  mfd: intel-lpss: Update LPSS UART #2 PCI ID for Jasper Lake
  mfd: tqmx86: Fix a typo in MODULE_DESCRIPTION
  mfd: stpmic1: Make stpmic1_regmap_config static
  mfd: htc-i2cpld: Convert to use i2c_new_client_device()
  MAINTAINERS: Add entry for mp2629 Battery Charger driver
  power: supply: mp2629: Add impedance compensation config
  ...
2020-06-04 10:38:42 -07:00
Linus Torvalds acf25aa663 Smack changes for 5.8
Clean out dead code and repair an out-of-bounds warning.
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Merge tag 'Smack-for-5.8' of git://github.com/cschaufler/smack-next

Pull smack updates from Casey Schaufler:
 "Clean out dead code and repair an out-of-bounds warning"

* tag 'Smack-for-5.8' of git://github.com/cschaufler/smack-next:
  Smack: Remove unused inline function smk_ad_setfield_u_fs_path_mnt
  Smack:- Remove redundant inode_smack cache
  Smack:- Remove mutex lock "smk_lock" from inode_smack
  Smack: slab-out-of-bounds in vsscanf
  smack: remove redundant structure variable from header.
  smack: avoid unused 'sip' variable warning
2020-06-04 10:31:05 -07:00
Linus Torvalds a484a497c9 Keyrings changes
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Merge tag 'keys-next-20200602' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull keyring updates from David Howells:

 - Fix a documentation warning.

 - Replace a zero-length array with a flexible one

 - Make the big_key key type use ChaCha20Poly1305 and use the crypto
   algorithm directly rather than going through the crypto layer.

 - Implement the update op for the big_key type.

* tag 'keys-next-20200602' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  keys: Implement update for the big_key type
  security/keys: rewrite big_key crypto to use library interface
  KEYS: Replace zero-length array with flexible-array
  Documentation: security: core.rst: add missing argument
2020-06-04 10:27:07 -07:00
Linus Torvalds 38b3a5aaf2 perf tools for v5.8:
- Further Intel PT call-trace fixes
 
  - Improve SELinux docs and tool warnings
 
  - Fix race at exit in 'perf record' using eventfd.
 
  - Add missing build tests to the default set of 'make -C tools/perf build-test'
 
  - Sync msr-index.h getting new AMD MSRs to decode and filter in 'perf trace'.
 
  - Fix fallback to libaudit in 'perf trace' for arches not using per-arch *.tbl files.
 
  - Fixes for 'perf ftrace'.
 
  - Fixes and improvements for the 'perf stat' metrics.
 
  - Use dummy event to get PERF_RECORD_{FORK,MMAP,etc} while synthesizing
    those metadata events for pre-existing threads.
 
  - Fix leaks detected using clang tooling.
 
  - Improvements to PMU event metric testing.
 
  - Report summary for 'perf stat' interval mode at the end, summing up
    all the intervals.
 
  - Improve pipe mode, i.e. this now works as expected, continuously
    dumping samples:
 
     # perf record -g -e raw_syscalls:sys_enter | perf --no-pager script
 
  - Fixes for event grouping, detecting incompatible groups such as:
 
      # perf stat -e '{cycles,power/energy-cores/}' -v
      WARNING: group events cpu maps do not match, disabling group:
        anon group { power/energy-cores/, cycles }
          power/energy-cores/: 0
          cycles: 0-7
 
  - Fixes for 'perf probe': blacklist address checking, number of
    kretprobe instances, etc.
 
  - JIT processing improvements and fixes plus the addition of a 'perf
    test' entry for the java demangler.
 
  - Add support for synthesizing first/last level cache, TLB and remove
    access events from HW tracing in the auxtrace code, first to use is
    ARM SPE.
 
  - Vendor events updates and fixes, including for POWER9 and Intel.
 
  - Allow using ~/.perfconfig for removing the ',' separators in 'perf
    stat' output.
 
  - Opt-in support for libpfm4.
 
 =================================================================================
 
 Adrian Hunter (8):
   perf intel-pt: Use allocated branch stack for PEBS sample
   perf symbols: Fix debuginfo search for Ubuntu
   perf kcore_copy: Fix module map when there are no modules loaded
   perf evlist: Disable 'immediate' events last
   perf script: Fix --call-trace for Intel PT
   perf record: Respect --no-switch-events
   perf intel-pt: Refine kernel decoding only warning message
   perf symbols: Fix kernel maps for kcore and eBPF
 
 Alexey Budankov (3):
   perf docs: Extend CAP_SYS_ADMIN with CAP_PERFMON where needed
   perf tool: Make perf tool aware of SELinux access control
   perf docs: Introduce security.txt file to document related issues
 
 Anand K Mistry (1):
   perf record: Use an eventfd to wakeup when done
 
 Andi Kleen (1):
   perf script: Don't force less for non tty output with --xed
 
 Arnaldo Carvalho de Melo (21):
   perf evsel: Rename perf_evsel__object_config() to evsel__object_config()
   perf evsel: Rename perf_evsel__resort*() to evsel__resort*()
   perf evsel: Rename perf_evsel__fprintf() to evsel__fprintf()
   perf evsel: Rename *perf_evsel__get_config_term() & friends to evsel__env()
   perf evsel: Rename perf_evsel__new*() to evsel__new*()
   perf evsel: Rename perf_evsel__[hs]w_cache* to evsel__[hs]w_cache*
   perf counts: Rename perf_evsel__*counts() to evsel__*counts()
   perf parse-events: Fix incorrect conversion of 'if () free()' to 'zfree()'
   perf evsel: Initialize evsel->per_pkg_mask to NULL in evsel__init()
   tools feature: Rename HAVE_EVENTFD to HAVE_EVENTFD_SUPPORT
   perf build: Group the NO_SYSCALL_TABLE logic
   perf build: Allow explicitely disabling the NO_SYSCALL_TABLE variable
   perf trace: Remove union from syscalltbl, all the fields are needed
   perf trace: Use zalloc() to make sure all fields are zeroed in the syscalltbl constructor
   perf trace: Grow the syscall table as needed when using libaudit
   perf build: Remove libaudit from the default feature checks
   perf build: Add NO_SYSCALL_TABLE=1 to the build tests
   perf build: Add NO_LIBCRYPTO=1 to the default set of build tests
   perf build: Add NO_SDT=1 to the default set of build tests
   perf build: Add a LIBPFM4=1 build test entry
   tools arch x86: Sync the msr-index.h copy with the kernel sources
 
 Changbin Du (2):
   perf ftrace: Trace system wide if no target is given
   perf ftrace: Detect workload failure
 
 Ed Maste (1):
   perf tools: Correct license on jsmn JSON parser
 
 Gustavo A. R. Silva (2):
   perf tools: Replace zero-length array with flexible-array
   perf branch: Replace zero-length array with flexible-array
 
 Ian Rogers (38):
   perf expr: Allow for unlimited escaped characters in a symbol
   perf metrics: Fix parse errors in cascade lake metrics
   perf metrics: Fix parse errors in skylake metrics
   perf expr: Allow ',' to be an other token
   perf expr: Increase max other
   perf expr: Parse numbers as doubles
   perf expr: Debug lex if debugging yacc
   perf metrics: Fix parse errors in power8 metrics
   perf metrics: Fix parse errors in power9 metrics
   perf expr: Print a debug message for division by zero
   perf evsel: Dummy events never triggers, no need to ask for PERF_SAMPLE_BRANCH_STACK
   perf record: Add dummy event during system wide synthesis
   perf c2c: Fix 'perf c2c record -e list' to show the default events used
   perf evsel: Fix 2 memory leaks
   perf expr: Test parsing of floating point numbers
   perf expr: Fix memory leaks in metric bison
   perf parse-events: Make add PMU verbose output clearer
   perf test: Provide a subtest callback to ask for the reason for skipping a subtest
   perf test: Improve pmu event metric testing
   perf trace: Fix the selection for architectures to generate the errno name tables
   perf beauty: Allow the CC used in the arch errno names script to acccept CFLAGS
   perf tools: Grab a copy of libbpf's hashmap
   perf expr: Migrate expr ids table to a hashmap
   perf metricgroup: Make 'evlist_used' variable a bitmap instead of array of bools
   perf expr: Allow numbers to be followed by a dot
   perf metricgroup: Free metric_events on error
   perf metricgroup: Always place duration_time last
   perf metricgroup: Use early return in add_metric
   perf metricgroup: Delay events string creation
   perf metricgroup: Order event groups by size
   perf metricgroup: Remove duped metric group events
   perf metricgroup: Add options to not group or merge
   perf metricgroup: Remove unnecessary ',' from events
   perf list: Add metrics to command line usage
   tools compiler.h: Add attribute to disable tail calls
   perf tests: Don't tail call optimize in unwind test
   perf test: Initialize memory in dwarf-unwind
   perf libdw: Fix off-by 1 relative directory includes
 
 Jin Yao (6):
   perf parse-events: Use strcmp() to compare the PMU name
   perf stat: Fix wrong per-thread runtime stat for interval mode
   perf counts: Reset prev_raw_counts counts
   perf stat: Copy counts from prev_raw_counts to evsel->counts
   perf stat: Save aggr value to first member of prev_raw_counts
   perf stat: Report summary for interval mode
 
 Jiri Olsa (13):
   perf tools: Do not display extra info when there is nothing to build
   perf tools: Do not seek in pipe fd during tracing data processing
   perf session: Try to read pipe data from file
   perf callchain: Setup callchain properly in pipe mode
   perf script: Enable IP fields for callchains
   perf tools: Fix is_bpf_image function logic
   perf trace: Fix compilation error for make NO_LIBBPF=1 DEBUG=1
   perf stat: Fix duration_time value for higher intervals
   perf stat: Fail on extra comma while parsing events
   perf tests: Consider subtests when searching for user specified tests
   perf stat: Do not pass avg to generic_metric
   perf parse: Add 'struct parse_events_state' pointer to scanner
   perf stat: Ensure group is defined on top of the same cpu mask
 
 Li Bin (1):
   perf util: Fix potential SEGFAULT in put_tracepoints_path error path
 
 Masami Hiramatsu (4):
   perf probe: Accept the instance number of kretprobe event
   perf probe: Fix to check blacklist address correctly
   perf probe: Check address correctness by map instead of _etext
   perf probe: Do not show the skipped events
 
 Nick Gasson (6):
   perf jvmti: Fix jitdump for methods without debug info
   perf jvmti: Do not report error when missing debug information
   perf tests: Add test for the java demangler
   perf jvmti: Fix demangling Java symbols
   perf jvmti: Remove redundant jitdump line table entries
   perf jit: Fix inaccurate DWARF line table
 
 Paul A. Clarke (5):
   perf stat: Increase perf metric output resolution
   perf vendor events power9: Add missing metrics to POWER9 'cpi_breakdown'
   perf stat: POWER9 metrics: expand "ICT" acronym
   perf script: Better align register values in dump
   perf config: Add stat.big-num support
 
 Ravi Bangoria (1):
   perf powerpc: Don't ignore sym-handling.c file
 
 Stephane Eranian (1):
   perf tools: Add optional support for libpfm4
 
 Tan Xiaojun (3):
   perf tools: Move arm-spe-pkt-decoder.h/c to the new dir
   perf auxtrace: Add four itrace options
   perf arm-spe: Support synthetic events
 
 Tiezhu Yang (1):
   perf tools: Remove some duplicated includes
 
 Wang ShaoBo (1):
   perf bpf-loader: Add missing '*' for key_scan_pos
 
 Xie XiuQi (1):
   perf util: Fix memory leak of prefix_if_not_in
 
 =================================================================================
 
 Test results:
 
 The first ones are container based builds of tools/perf with and without libelf
 support.  Where clang is available, it is also used to build perf with/without
 libelf, and building with LIBCLANGLLVM=1 (built-in clang) with gcc and clang
 when clang and its devel libraries are installed.
 
 The objtool and samples/bpf/ builds are disabled now that I'm switching from
 using the sources in a local volume to fetching them from a http server to
 build it inside the container, to make it easier to build in a container cluster.
 Those will come back later.
 
 Several are cross builds, the ones with -x-ARCH and the android one, and those
 may not have all the features built, due to lack of multi-arch devel packages,
 available and being used so far on just a few, like
 debian:experimental-x-{arm64,mipsel}.
 
 The 'perf test' one will perform a variety of tests exercising
 tools/perf/util/, tools/lib/{bpf,traceevent,etc}, as well as run perf commands
 with a variety of command line event specifications to then intercept the
 sys_perf_event syscall to check that the perf_event_attr fields are set up as
 expected, among a variety of other unit tests.
 
 Then there is the 'make -C tools/perf build-test' ones, that build tools/perf/
 with a variety of feature sets, exercising the build with an incomplete set of
 features as well as with a complete one. It is planned to have it run on each
 of the containers mentioned above, using some container orchestration
 infrastructure. Get in contact if interested in helping having this in place.
 
 Ubuntu 19.10 is failing when linking against libllvm, which isn't the default,
 needs to be investigated, haven't tested with CC=gcc, but should be the same
 problem:
 
 + make ARCH= CROSS_COMPILE= EXTRA_CFLAGS= LIBCLANGLLVM=1 -C /git/linux/tools/perf O=/tmp/build/perf CC=clang
 
 ...
 /usr/bin/ld: /usr/lib/llvm-9/lib/libclangAnalysis.a(ExprMutationAnalyzer.cpp.o): in function `clang::ast_matchers::internal::matcher_ignoringImpCasts0Matcher::matches(clang::Expr const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const':
 (.text._ZNK5clang12ast_matchers8internal32matcher_ignoringImpCasts0Matcher7matchesERKNS_4ExprEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE[_ZNK5clang12ast_matchers8internal32matcher_ignoringImpCasts0Matcher7matchesERKNS_4ExprEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE]+0x43): undefined reference to `clang::ast_matchers::internal::DynTypedMatcher::matches(clang::ast_type_traits::DynTypedNode const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const'
 /usr/bin/ld: /usr/lib/llvm-9/lib/libclangAnalysis.a(ExprMutationAnalyzer.cpp.o): in function `clang::ast_matchers::internal::matcher_hasLoopVariable0Matcher::matches(clang::CXXForRangeStmt const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const':
 (.text._ZNK5clang12ast_matchers8internal31matcher_hasLoopVariable0Matcher7matchesERKNS_15CXXForRangeStmtEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE[_ZNK5clang12ast_matchers8internal31matcher_hasLoopVariable0Matcher7matchesERKNS_15CXXForRangeStmtEPNS1_14ASTMatchFinderEPNS1_21BoundNodesTreeBuilderE]+0x48): undefined reference to `clang::ast_matchers::internal::DynTypedMatcher::matches(clang::ast_type_traits::DynTypedNode const&, clang::ast_matchers::internal::ASTMatchFinder*, clang::ast_matchers::internal::BoundNodesTreeBuilder*) const'
 ...
 
   # export PERF_TARBALL=http://192.168.124.1/perf/perf-5.7.0-rc7.tar.xz
   # time dm
    1 alpine:3.4                    : Ok   gcc (Alpine 5.3.0) 5.3.0, clang version 3.8.0 (tags/RELEASE_380/final)
    2 alpine:3.5                    : Ok   gcc (Alpine 6.2.1) 6.2.1 20160822, clang version 3.8.1 (tags/RELEASE_381/final)
    3 alpine:3.6                    : Ok   gcc (Alpine 6.3.0) 6.3.0, clang version 4.0.0 (tags/RELEASE_400/final)
    4 alpine:3.7                    : Ok   gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.0 (tags/RELEASE_500/final) (based on LLVM 5.0.0)
    5 alpine:3.8                    : Ok   gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.1 (tags/RELEASE_501/final) (based on LLVM 5.0.1)
    6 alpine:3.9                    : Ok   gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 5.0.1 (tags/RELEASE_502/final) (based on LLVM 5.0.1)
    7 alpine:3.10                   : Ok   gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 8.0.0 (tags/RELEASE_800/final) (based on LLVM 8.0.0)
    8 alpine:3.11                   : Ok   gcc (Alpine 9.2.0) 9.2.0, Alpine clang version 9.0.0 (https://git.alpinelinux.org/aports f7f0d2c2b8bcd6a5843401a9a702029556492689) (based on LLVM 9.0.0)
    9 alpine:3.12                   : Ok   gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (https://gitlab.alpinelinux.org/alpine/aports.git 7445adce501f8473efdb93b17b5eaf2f1445ed4c)
   10 alpine:edge                   : Ok   gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (git://git.alpinelinux.org/aports 7445adce501f8473efdb93b17b5eaf2f1445ed4c)
   11 alt:p8                        : Ok   x86_64-alt-linux-gcc (GCC) 5.3.1 20151207 (ALT p8 5.3.1-alt3.M80P.1), clang version 3.8.0 (tags/RELEASE_380/final)
   12 alt:p9                        : Ok   x86_64-alt-linux-gcc (GCC) 8.4.1 20200305 (ALT p9 8.4.1-alt0.p9.1), clang version 7.0.1
   13 alt:sisyphus                  : Ok   x86_64-alt-linux-gcc (GCC) 9.2.1 20200123 (ALT Sisyphus 9.2.1-alt3), clang version 10.0.0
   14 amazonlinux:1                 : Ok   gcc (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2), clang version 3.6.2 (tags/RELEASE_362/final)
   15 amazonlinux:2                 : Ok   gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 7.0.1 (Amazon Linux 2 7.0.1-1.amzn2.0.2)
   16 android-ndk:r12b-arm          : Ok   arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
   17 android-ndk:r15c-arm          : Ok   arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
   18 centos:5                      : Ok   gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-55)
   19 centos:6                      : Ok   gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23)
   20 centos:7                      : Ok   gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39)
   21 centos:8                      : Ok   gcc (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4), clang version 8.0.1 (Red Hat 8.0.1-1.module_el8.1.0+215+a01033fb)
   22 clearlinux:latest             : Ok   gcc (Clear Linux OS for Intel Architecture) 9.3.1 20200501 releases/gcc-9.3.0-196-gcb2c76c8b1, clang version 10.0.0
   23 debian:8                      : Ok   gcc (Debian 4.9.2-10+deb8u2) 4.9.2, Debian clang version 3.5.0-10 (tags/RELEASE_350/final) (based on LLVM 3.5.0)
   24 debian:9                      : Ok   gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516, clang version 3.8.1-24 (tags/RELEASE_381/final)
   25 debian:10                     : Ok   gcc (Debian 8.3.0-6) 8.3.0, clang version 7.0.1-8 (tags/RELEASE_701/final)
   26 debian:experimental           : FAIL gcc (Debian 9.3.0-13) 9.3.0, clang version 9.0.1-12
   27 debian:experimental-x-arm64   : Ok   aarch64-linux-gnu-gcc (Debian 9.3.0-8) 9.3.0
   28 debian:experimental-x-mips    : Ok   mips-linux-gnu-gcc (Debian 8.3.0-19) 8.3.0
   29 debian:experimental-x-mips64  : Ok   mips64-linux-gnuabi64-gcc (Debian 9.3.0-8) 9.3.0
   30 debian:experimental-x-mipsel  : Ok   mipsel-linux-gnu-gcc (Debian 9.2.1-8) 9.2.1 20190909
   31 fedora:20                     : Ok   gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-7)
   32 fedora:22                     : Ok   gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.5.0 (tags/RELEASE_350/final)
   33 fedora:23                     : Ok   gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6), clang version 3.7.0 (tags/RELEASE_370/final)
   34 fedora:24                     : Ok   gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1), clang version 3.8.1 (tags/RELEASE_381/final)
   35 fedora:24-x-ARC-uClibc        : Ok   arc-linux-gcc (ARCompact ISA Linux uClibc toolchain 2017.09-rc2) 7.1.1 20170710
   36 fedora:25                     : Ok   gcc (GCC) 6.4.1 20170727 (Red Hat 6.4.1-1), clang version 3.9.1 (tags/RELEASE_391/final)
   37 fedora:26                     : Ok   gcc (GCC) 7.3.1 20180130 (Red Hat 7.3.1-2), clang version 4.0.1 (tags/RELEASE_401/final)
   38 fedora:27                     : Ok   gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 5.0.2 (tags/RELEASE_502/final)
   39 fedora:28                     : Ok   gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 6.0.1 (tags/RELEASE_601/final)
   40 fedora:29                     : Ok   gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2), clang version 7.0.1 (Fedora 7.0.1-6.fc29)
   41 fedora:30                     : Ok   gcc (GCC) 9.2.1 20190827 (Red Hat 9.2.1-1), clang version 8.0.0 (Fedora 8.0.0-3.fc30)
   42 fedora:30-x-ARC-glibc         : Ok   arc-linux-gcc (ARC HS GNU/Linux glibc toolchain 2019.03-rc1) 8.3.1 20190225
   43 fedora:30-x-ARC-uClibc        : Ok   arc-linux-gcc (ARCv2 ISA Linux uClibc toolchain 2019.03-rc1) 8.3.1 20190225
   44 fedora:31                     : Ok   gcc (GCC) 9.3.1 20200408 (Red Hat 9.3.1-2), clang version 9.0.1 (Fedora 9.0.1-2.fc31)
   45 fedora:32                     : Ok   gcc (GCC) 10.1.1 20200507 (Red Hat 10.1.1-1), clang version 10.0.0 (Fedora 10.0.0-1.fc32)
   46 fedora:rawhide                : Ok   gcc (GCC) 10.0.1 20200216 (Red Hat 10.0.1-0.8), clang version 10.0.0 (Fedora 10.0.0-0.3.rc2.fc33)
   47 gentoo-stage3-amd64:latest    : Ok   gcc (Gentoo 9.2.0-r2 p3) 9.2.0
   48 mageia:5                      : Ok   gcc (GCC) 4.9.2, clang version 3.5.2 (tags/RELEASE_352/final)
   49 mageia:6                      : Ok   gcc (Mageia 5.5.0-1.mga6) 5.5.0, clang version 3.9.1 (tags/RELEASE_391/final)
   50 mageia:7                      : Ok   gcc (Mageia 8.3.1-0.20190524.1.mga7) 8.3.1 20190524, clang version 8.0.0 (Mageia 8.0.0-1.mga7)
   51 manjaro:latest                : Ok   gcc (GCC) 9.2.0, clang version 9.0.0 (tags/RELEASE_900/final)
   52 openmandriva:cooker           : Ok   gcc (GCC) 10.0.0 20200502 (OpenMandriva), clang version 10.0.1
   53 opensuse:15.0                 : Ok   gcc (SUSE Linux) 7.4.1 20190424 [gcc-7-branch revision 270538], clang version 5.0.1 (tags/RELEASE_501/final 312548)
   54 opensuse:15.1                 : Ok   gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238)
   55 opensuse:15.2                 : Ok   gcc (SUSE Linux) 7.5.0, clang version 7.0.1 (tags/RELEASE_701/final 349238)
   56 opensuse:42.3                 : Ok   gcc (SUSE Linux) 4.8.5, clang version 3.8.0 (tags/RELEASE_380/final 262553)
   57 opensuse:tumbleweed           : Ok   gcc (SUSE Linux) 9.3.1 20200406 [revision 6db837a5288ee3ca5ec504fbd5a765817e556ac2], clang version 10.0.0
   58 oraclelinux:6                 : Ok   gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23.0.1)
   59 oraclelinux:7                 : Ok   gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39.0.3)
   60 oraclelinux:8                 : Ok   gcc (GCC) 8.3.1 20191121 (Red Hat 8.3.1-5.0.3), clang version 9.0.1 (Red Hat 9.0.1-2.0.1.module+el8.2.0+5599+9ed9ef6d)
   61 ubuntu:12.04                  : Ok   gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0)
   62 ubuntu:14.04                  : Ok   gcc (Ubuntu 4.8.4-2ubuntu1~14.04.4) 4.8.4
   63 ubuntu:16.04                  : Ok   gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609, clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
   64 ubuntu:16.04-x-arm            : Ok   arm-linux-gnueabihf-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   65 ubuntu:16.04-x-arm64          : Ok   aarch64-linux-gnu-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   66 ubuntu:16.04-x-powerpc        : Ok   powerpc-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   67 ubuntu:16.04-x-powerpc64      : Ok   powerpc64-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   68 ubuntu:16.04-x-powerpc64el    : Ok   powerpc64le-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   69 ubuntu:16.04-x-s390           : Ok   s390x-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
   70 ubuntu:18.04                  : Ok   gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0, clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
   71 ubuntu:18.04-x-arm            : Ok   arm-linux-gnueabihf-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0
   72 ubuntu:18.04-x-arm64          : Ok   aarch64-linux-gnu-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0
   73 ubuntu:18.04-x-m68k           : Ok   m68k-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   74 ubuntu:18.04-x-powerpc        : Ok   powerpc-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
   75 ubuntu:18.04-x-powerpc64      : Ok   powerpc64-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
   76 ubuntu:18.04-x-powerpc64el    : Ok   powerpc64le-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   77 ubuntu:18.04-x-riscv64        : Ok   riscv64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   78 ubuntu:18.04-x-s390           : Ok   s390x-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   79 ubuntu:18.04-x-sh4            : Ok   sh4-linux-gnu-gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
   80 ubuntu:18.04-x-sparc64        : Ok   sparc64-linux-gnu-gcc (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
   81 ubuntu:18.10                  : Ok   gcc (Ubuntu 8.3.0-6ubuntu1~18.10.1) 8.3.0, clang version 7.0.0-3 (tags/RELEASE_700/final)
   82 ubuntu:19.04                  : Ok   gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0, clang version 8.0.0-3 (tags/RELEASE_800/final)
   83 ubuntu:19.04-x-alpha          : Ok   alpha-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0
   84 ubuntu:19.04-x-arm64          : Ok   aarch64-linux-gnu-gcc (Ubuntu/Linaro 8.3.0-6ubuntu1) 8.3.0
   85 ubuntu:19.04-x-hppa           : Ok   hppa-linux-gnu-gcc (Ubuntu 8.3.0-6ubuntu1) 8.3.0
   86 ubuntu:19.10                  : FAIL gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008, clang version 9.0.0-2 (tags/RELEASE_900/final)
   87 ubuntu:20.04                  : Ok   gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0, clang version 10.0.0-4ubuntu1
   #
 
   It builds ok with the default set of options.
 
 The "7: Simple expression parser" entry is failing due to a bug in the
 hashmap in libbpf that will hit upstream via the bpf tree.
 
   # uname -a
   Linux five 5.5.17-200.fc31.x86_64 #1 SMP Mon Apr 13 15:29:42 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
   # git log --oneline -1
   3e9b26dc22 perf tools: Remove some duplicated includes
   # perf version --build-options
   perf version 5.7.rc7.g0affd0e5262b
                    dwarf: [ on  ]  # HAVE_DWARF_SUPPORT
       dwarf_getlocations: [ on  ]  # HAVE_DWARF_GETLOCATIONS_SUPPORT
                    glibc: [ on  ]  # HAVE_GLIBC_SUPPORT
                     gtk2: [ on  ]  # HAVE_GTK2_SUPPORT
            syscall_table: [ on  ]  # HAVE_SYSCALL_TABLE_SUPPORT
                   libbfd: [ on  ]  # HAVE_LIBBFD_SUPPORT
                   libelf: [ on  ]  # HAVE_LIBELF_SUPPORT
                  libnuma: [ on  ]  # HAVE_LIBNUMA_SUPPORT
   numa_num_possible_cpus: [ on  ]  # HAVE_LIBNUMA_SUPPORT
                  libperl: [ on  ]  # HAVE_LIBPERL_SUPPORT
                libpython: [ on  ]  # HAVE_LIBPYTHON_SUPPORT
                 libslang: [ on  ]  # HAVE_SLANG_SUPPORT
                libcrypto: [ on  ]  # HAVE_LIBCRYPTO_SUPPORT
                libunwind: [ on  ]  # HAVE_LIBUNWIND_SUPPORT
       libdw-dwarf-unwind: [ on  ]  # HAVE_DWARF_SUPPORT
                     zlib: [ on  ]  # HAVE_ZLIB_SUPPORT
                     lzma: [ on  ]  # HAVE_LZMA_SUPPORT
                get_cpuid: [ on  ]  # HAVE_AUXTRACE_SUPPORT
                      bpf: [ on  ]  # HAVE_LIBBPF_SUPPORT
                      aio: [ on  ]  # HAVE_AIO_SUPPORT
                     zstd: [ on  ]  # HAVE_ZSTD_SUPPORT
   # perf test
    1: vmlinux symtab matches kallsyms                       : Ok
    2: Detect openat syscall event                           : Ok
    3: Detect openat syscall event on all cpus               : Ok
    4: Read samples using the mmap interface                 : Ok
    5: Test data source output                               : Ok
    6: Parse event definition strings                        : Ok
    7: Simple expression parser                              : FAILED!
    8: PERF_RECORD_* events & perf_sample fields             : Ok
    9: Parse perf pmu format                                 : Ok
   10: PMU events                                            :
   10.1: PMU event table sanity                              : Ok
   10.2: PMU event map aliases                               : Ok
   10.3: Parsing of PMU event table metrics                  : Ok
   11: DSO data read                                         : Ok
   12: DSO data cache                                        : Ok
   13: DSO data reopen                                       : Ok
   14: Roundtrip evsel->name                                 : Ok
   15: Parse sched tracepoints fields                        : Ok
   16: syscalls:sys_enter_openat event fields                : Ok
   17: Setup struct perf_event_attr                          : Ok
   18: Match and link multiple hists                         : Ok
   19: 'import perf' in python                               : Ok
   20: Breakpoint overflow signal handler                    : Ok
   21: Breakpoint overflow sampling                          : Ok
   22: Breakpoint accounting                                 : Ok
   23: Watchpoint                                            :
   23.1: Read Only Watchpoint                                : Skip
   23.2: Write Only Watchpoint                               : Ok
   23.3: Read / Write Watchpoint                             : Ok
   23.4: Modify Watchpoint                                   : Ok
   24: Number of exit events of a simple workload            : Ok
   25: Software clock events period values                   : Ok
   26: Object code reading                                   : Ok
   27: Sample parsing                                        : Ok
   28: Use a dummy software event to keep tracking           : Ok
   29: Parse with no sample_id_all bit set                   : Ok
   30: Filter hist entries                                   : Ok
   31: Lookup mmap thread                                    : Ok
   32: Share thread maps                                     : Ok
   33: Sort output of hist entries                           : Ok
   34: Cumulate child hist entries                           : Ok
   35: Track with sched_switch                               : Ok
   36: Filter fds with revents mask in a fdarray             : Ok
   37: Add fd to a fdarray, making it autogrow               : Ok
   38: kmod_path__parse                                      : Ok
   39: Thread map                                            : Ok
   40: LLVM search and compile                               :
   40.1: Basic BPF llvm compile                              : Ok
   40.2: kbuild searching                                    : Ok
   40.3: Compile source for BPF prologue generation          : Ok
   40.4: Compile source for BPF relocation                   : Ok
   41: Session topology                                      : Ok
   42: BPF filter                                            :
   42.1: Basic BPF filtering                                 : Ok
   42.2: BPF pinning                                         : Ok
   42.3: BPF prologue generation                             : Ok
   42.4: BPF relocation checker                              : Ok
   43: Synthesize thread map                                 : Ok
   44: Remove thread map                                     : Ok
   45: Synthesize cpu map                                    : Ok
   46: Synthesize stat config                                : Ok
   47: Synthesize stat                                       : Ok
   48: Synthesize stat round                                 : Ok
   49: Synthesize attr update                                : Ok
   50: Event times                                           : Ok
   51: Read backward ring buffer                             : Ok
   52: Print cpu map                                         : Ok
   53: Merge cpu map                                         : Ok
   54: Probe SDT events                                      : Ok
   55: is_printable_array                                    : Ok
   56: Print bitmap                                          : Ok
   57: perf hooks                                            : Ok
   58: builtin clang support                                 : Skip (not compiled in)
   59: unit_number__scnprintf                                : Ok
   60: mem2node                                              : Ok
   61: time utils                                            : Ok
   62: Test jit_write_elf                                    : Ok
   63: Test libpfm4 support                                  : Skip (not compiled in)
   64: Test api io                                           : Ok
   65: maps__merge_in                                        : Ok
   66: Demangle Java                                         : Ok
   67: x86 rdpmc                                             : Ok
   68: Convert perf time to TSC                              : Ok
   69: DWARF unwind                                          : Ok
   70: x86 instruction decoder - new instructions            : Ok
   71: Intel PT packet decoder                               : Ok
   72: x86 bp modify                                         : Ok
   73: probe libc's inet_pton & backtrace it with ping       : Ok
   74: Use vfs_getname probe to get syscall args filenames   : Ok
   75: Check open filename arg using perf trace + vfs_getname: Ok
   76: Zstd perf.data compression/decompression              : Ok
   77: Add vfs_getname probe to get syscall args filenames   : Ok
   #
 
   [acme@five perf]$ git log --oneline -1 ; time make -C tools/perf build-test
   3e9b26dc22 (HEAD -> perf/core, seventh/perf/core, quaco/perf/core) perf tools: Remove some duplicated includes
   make: Entering directory '/home/acme/git/perf/tools/perf'
   - tarpkg: ./tests/perf-targz-src-pkg .
         make_no_libbpf_DEBUG_O: make NO_LIBBPF=1 DEBUG=1
          make_with_clangllvm_O: make LIBCLANGLLVM=1
             make_no_auxtrace_O: make NO_AUXTRACE=1
             make_no_demangle_O: make NO_DEMANGLE=1
               make_clean_all_O: make clean all
        make_util_pmu_bison_o_O: make util/pmu-bison.o
                 make_no_newt_O: make NO_NEWT=1
                 make_no_gtk2_O: make NO_GTK2=1
               make_no_libbpf_O: make NO_LIBBPF=1
             make_no_libaudit_O: make NO_LIBAUDIT=1
                  make_perf_o_O: make perf.o
               make_no_libelf_O: make NO_LIBELF=1
                  make_static_O: make LDFLAGS=-static NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX32=1 NO_JVMTI=1
                 make_install_O: make install
            make_no_libpython_O: make NO_LIBPYTHON=1
            make_no_libunwind_O: make NO_LIBUNWIND=1
   make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
              make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
            make_with_libpfm4_O: make LIBPFM4=1
                    make_pure_O: make
                     make_doc_O: make doc
                  make_no_sdt_O: make NO_SDT=1
                make_no_slang_O: make NO_SLANG=1
          make_no_syscall_tbl_O: make NO_SYSCALL_TABLE=1
             make_install_bin_O: make install-bin
              make_no_libperl_O: make NO_LIBPERL=1
    make_install_prefix_slash_O: make install prefix=/tmp/krava/
          make_install_prefix_O: make install prefix=/tmp/krava
                   make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
              make_no_libnuma_O: make NO_LIBNUMA=1
                 make_minimal_O: make NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1 NO_LIBZSTD=1 NO_LIBCAP=1 NO_SYSCALL_TABLE=1
         make_with_babeltrace_O: make LIBBABELTRACE=1
                    make_help_O: make help
            make_no_libcrypto_O: make NO_LIBCRYPTO=1
                   make_debug_O: make DEBUG=1
            make_no_libbionic_O: make NO_LIBBIONIC=1
            make_no_backtrace_O: make NO_BACKTRACE=1
                    make_tags_O: make tags
              make_util_map_o_O: make util/map.o
   OK
   make: Leaving directory '/home/acme/git/perf/tools/perf'
   [acme@five perf]$
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 J4mdAQD9wzSFCI96jZkWvCx61AkoZkcG8fyaWBpH+7Wuum3J1QD/Q9c37NGepK3T
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Merge tag 'perf-tools-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tooling updates from Arnaldo Carvalho de Melo:
 "These are additional changes to the perf tools, on top of what Ingo
  already submitted.

   - Further Intel PT call-trace fixes

   - Improve SELinux docs and tool warnings

   - Fix race at exit in 'perf record' using eventfd.

   - Add missing build tests to the default set of 'make -C tools/perf
     build-test'

   - Sync msr-index.h getting new AMD MSRs to decode and filter in 'perf
     trace'.

   - Fix fallback to libaudit in 'perf trace' for arches not using
     per-arch *.tbl files.

   - Fixes for 'perf ftrace'.

   - Fixes and improvements for the 'perf stat' metrics.

   - Use dummy event to get PERF_RECORD_{FORK,MMAP,etc} while
     synthesizing those metadata events for pre-existing threads.

   - Fix leaks detected using clang tooling.

   - Improvements to PMU event metric testing.

   - Report summary for 'perf stat' interval mode at the end, summing up
     all the intervals.

   - Improve pipe mode, i.e. this now works as expected, continuously
     dumping samples:

        # perf record -g -e raw_syscalls:sys_enter | perf --no-pager script

   - Fixes for event grouping, detecting incompatible groups such as:

        # perf stat -e '{cycles,power/energy-cores/}' -v
        WARNING: group events cpu maps do not match, disabling group:
          anon group { power/energy-cores/, cycles }
            power/energy-cores/: 0
            cycles: 0-7

   - Fixes for 'perf probe': blacklist address checking, number of
     kretprobe instances, etc.

   - JIT processing improvements and fixes plus the addition of a 'perf
     test' entry for the java demangler.

   - Add support for synthesizing first/last level cache, TLB and remove
     access events from HW tracing in the auxtrace code, first to use is
     ARM SPE.

   - Vendor events updates and fixes, including for POWER9 and Intel.

   - Allow using ~/.perfconfig for removing the ',' separators in 'perf
     stat' output.

   - Opt-in support for libpfm4"

* tag 'perf-tools-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (120 commits)
  perf tools: Remove some duplicated includes
  perf symbols: Fix kernel maps for kcore and eBPF
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf stat: Ensure group is defined on top of the same cpu mask
  perf libdw: Fix off-by 1 relative directory includes
  perf arm-spe: Support synthetic events
  perf auxtrace: Add four itrace options
  perf tools: Move arm-spe-pkt-decoder.h/c to the new dir
  perf test: Initialize memory in dwarf-unwind
  perf tests: Don't tail call optimize in unwind test
  tools compiler.h: Add attribute to disable tail calls
  perf build: Add a LIBPFM4=1 build test entry
  perf tools: Add optional support for libpfm4
  perf tools: Correct license on jsmn JSON parser
  perf jit: Fix inaccurate DWARF line table
  perf jvmti: Remove redundant jitdump line table entries
  perf build: Add NO_SDT=1 to the default set of build tests
  perf build: Add NO_LIBCRYPTO=1 to the default set of build tests
  perf build: Add NO_SYSCALL_TABLE=1 to the build tests
  perf build: Remove libaudit from the default feature checks
  ...
2020-06-04 10:17:59 -07:00
David Howells 8409f67b64 afs: Adjust the fileserver rotation algorithm to reprobe/retry more quickly
Adjust the fileserver rotation algorithm so that if we've tried all the
addresses on a server (cumulatively over multiple operations) until we've
run out of untried addresses, immediately reprobe all that server's
interfaces and retry the op at least once before we move onto the next
server.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:58 +01:00
David Howells 32275d3f75 afs: Show more a bit more server state in /proc/net/afs/servers
Display more information about the state of a server record, including the
flags, rtt and break counter plus the probe state for each server in
/proc/net/afs/servers.

Rearrange the server flags a bit to make them easier to read at a glance in
the proc file.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:58 +01:00
David Howells f3c130e6e6 afs: Don't use probe running state to make decisions outside probe code
Don't use the running state for fileserver probes to make decisions about
which server to use as the state is cleared at the start of a probe and
also intermediate values might be misleading.

Instead, add a separate 'latest known' rtt in the afs_server struct and a
flag to indicate if the server is known to be responding and update these
as and when we know what to change them to.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:58 +01:00
David Howells f11a016a85 afs: Fix afs_statfs() to not let the values go below zero
Fix afs_statfs() so that the value for f_bavail and f_bfree don't go
"negative" if the number of blocks in use by a volume exceeds the max quota
for that volume.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:58 +01:00
David Howells 3c4c4075fc afs: Fix the by-UUID server tree to allow servers with the same UUID
Whilst it shouldn't happen, it is possible for multiple fileservers to
share a UUID, particularly if an entire cell has been duplicated, UUIDs and
all.  In such a case, it's not necessarily possible to map the effect of
the CB.InitCallBackState3 incoming RPC to a specific server unambiguously
by UUID and thus to a specific cell.

Indeed, there's a problem whereby multiple server records may need to
occupy the same spot in the rb_tree rooted in the afs_net struct.

Fix this by allowing servers to form a list, with the head of the list in
the tree.  When the front entry in the list is removed, the second in the
list just replaces it.  afs_init_callback_state() then just goes down the
line, poking each server in the list.

This means that some servers will be unnecessarily poked, unfortunately.
An alternative would be to route by call parameters.

Reported-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Fixes: d2ddc776a4 ("afs: Overhaul volume and server record caching and fileserver rotation")
2020-06-04 15:37:57 +01:00
David Howells 20325960f8 afs: Reorganise volume and server trees to be rooted on the cell
Reorganise afs_volume objects such that they're in a tree keyed on volume
ID, rooted at on an afs_cell object rather than being in multiple trees,
each of which is rooted on an afs_server object.

afs_server structs become per-cell and acquire a pointer to the cell.

The process of breaking a callback then starts with finding the server by
its network address, following that to the cell and then looking up each
volume ID in the volume tree.

This is simpler than the afs_vol_interest/afs_cb_interest N:M mapping web
and allows those structs and the code for maintaining them to be simplified
or removed.

It does make a couple of things a bit more tricky, though:

 (1) Operations now start with a volume, not a server, so there can be more
     than one answer as to whether or not the server we'll end up using
     supports the FS.InlineBulkStatus RPC.

 (2) CB RPC operations that specify the server UUID.  There's still a tree
     of servers by UUID on the afs_net struct, but the UUIDs in it aren't
     guaranteed unique.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:57 +01:00
David Howells cca37d45d5 afs: Add a tracepoint to track the lifetime of the afs_volume struct
Add a tracepoint to track the lifetime of the afs_volume struct.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:57 +01:00
David Howells 6dfdf5369c afs: Detect cell aliases 3 - YFS Cells with a canonical cell name op
YFS Volume Location servers have an operation by which the cell name may be
queried.  Use this to find out what a YFS server thinks the canonical cell
name should be.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:57 +01:00
David Howells 6ef350b184 afs: Detect cell aliases 2 - Cells with no root volumes
Implement the second phase of cell alias detection.  This part handles
alias detection for cells that don't have root.cell volumes and so we have
to find some other volume or fileserver to query.

We take the first volume from each such cell and attempt to look it up in
the new cell.  If found, we compare the records, if they are the same, we
judge the cell names to be aliases.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:57 +01:00
David Howells 8a070a9648 afs: Detect cell aliases 1 - Cells with root volumes
Put in the first phase of cell alias detection.  This part handles alias
detection for cells that have root.cell volumes (which is expected to be
likely).

When a cell becomes newly active, it is probed for its root.cell volume,
and if it has one, this volume is compared against other root.cell volumes
to find out if the list of fileserver UUIDs have any in common - and if
that's the case, do the address lists of those fileservers have any
addresses in common.  If they do, the new cell is adjudged to be an alias
of the old cell and the old cell is used instead.

Comparing is aided by the server list in struct afs_server_list being
sorted in UUID order and the addresses in the fileserver address lists
being sorted in address order.

The cell then retains the afs_volume object for the root.cell volume, even
if it's not mounted for future alias checking.

This necessary because:

 (1) Whilst fileservers have UUIDs that are meant to be globally unique, in
     practice they are not because cells get cloned without changing the
     UUIDs - so afs_server records need to be per cell.

 (2) Sometimes the DNS is used to make cell aliases - but if we don't know
     they're the same, we may end up with multiple superblocks and multiple
     afs_server records for the same thing, impairing our ability to
     deliver callback notifications of third party changes

 (3) The fileserver RPC API doesn't contain the cell name, so it can't tell
     us which cell it's notifying and can't see that a change made to to
     one cell should notify the same client that's also accessed as the
     other cell.

Reported-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:57 +01:00
David Howells c3e9f88826 afs: Implement client support for the YFSVL.GetCellName RPC op
Implement client support for the YFSVL.GetCellName RPC operation by which
YFS permits the canonical cell name to be queried from a VL server.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:57 +01:00
David Howells 194d28cf19 afs: Retain more of the VLDB record for alias detection
Save more bits from the volume location database record obtained for a
server so that we can use this information in cell alias detection.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:57 +01:00
David Howells 3120c170ef afs: Fix handling of CB.ProbeUuid cache manager op
The AFS filesystem driver is handling the CB.ProbeUuid request incorrectly.
The UUID presented in the request is that of the cache manager, not the
fileserver, so afs_deliver_cb_probe_uuid() shouldn't be using that UUID to
look up the server.

Fix this by looking up the server by address instead.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:57 +01:00
David Howells 44746355cc afs: Don't get epoch from a server because it may be ambiguous
Don't get the epoch from a server, particularly one that we're looking up
by UUID, as UUIDs may be ambiguous and may map to more than one server - so
we can't draw any conclusions from it.

Reported-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:56 +01:00
David Howells e49c7b2f6d afs: Build an abstraction around an "operation" concept
Turn the afs_operation struct into the main way that most fileserver
operations are managed.  Various things are added to the struct, including
the following:

 (1) All the parameters and results of the relevant operations are moved
     into it, removing corresponding fields from the afs_call struct.
     afs_call gets a pointer to the op.

 (2) The target volume is made the main focus of the operation, rather than
     the target vnode(s), and a bunch of op->vnode->volume are made
     op->volume instead.

 (3) Two vnode records are defined (op->file[]) for the vnode(s) involved
     in most operations.  The vnode record (struct afs_vnode_param)
     contains:

	- The vnode pointer.

	- The fid of the vnode to be included in the parameters or that was
          returned in the reply (eg. FS.MakeDir).

	- The status and callback information that may be returned in the
     	  reply about the vnode.

	- Callback break and data version tracking for detecting
          simultaneous third-parth changes.

 (4) Pointers to dentries to be updated with new inodes.

 (5) An operations table pointer.  The table includes pointers to functions
     for issuing AFS and YFS-variant RPCs, handling the success and abort
     of an operation and handling post-I/O-lock local editing of a
     directory.

To make this work, the following function restructuring is made:

 (A) The rotation loop that issues calls to fileservers that can be found
     in each function that wants to issue an RPC (such as afs_mkdir()) is
     extracted out into common code, in a new file called fs_operation.c.

 (B) The rotation loops, such as the one in afs_mkdir(), are replaced with
     a much smaller piece of code that allocates an operation, sets the
     parameters and then calls out to the common code to do the actual
     work.

 (C) The code for handling the success and failure of an operation are
     moved into operation functions (as (5) above) and these are called
     from the core code at appropriate times.

 (D) The pseudo inode getting stuff used by the dynamic root code is moved
     over into dynroot.c.

 (E) struct afs_iget_data is absorbed into the operation struct and
     afs_iget() expects to be given an op pointer and a vnode record.

 (F) Point (E) doesn't work for the root dir of a volume, but we know the
     FID in advance (it's always vnode 1, unique 1), so a separate inode
     getter, afs_root_iget(), is provided to special-case that.

 (G) The inode status init/update functions now also take an op and a vnode
     record.

 (H) The RPC marshalling functions now, for the most part, just take an
     afs_operation struct as their only argument.  All the data they need
     is held there.  The result delivery functions write their answers
     there as well.

 (I) The call is attached to the operation and then the operation core does
     the waiting.

And then the new operation code is, for the moment, made to just initialise
the operation, get the appropriate vnode I/O locks and do the same rotation
loop as before.

This lays the foundation for the following changes in the future:

 (*) Overhauling the rotation (again).

 (*) Support for asynchronous I/O, where the fileserver rotation must be
     done asynchronously also.

Signed-off-by: David Howells <dhowells@redhat.com>
2020-06-04 15:37:17 +01:00
Kunihiko Hayashi 8d7e33d681 PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver
Add driver for the Socionext UniPhier Pro5 SoC endpoint controller.
This controller is based on the DesignWare PCIe core.

And add "host" to existing controller descriontions for the host controller
in Kconfig.

Link: https://lore.kernel.org/r/1589457801-12796-3-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
2020-06-04 10:03:18 +01:00
Steve French e80ddeb2f7 smb3: fix incorrect number of credits when ioctl MaxOutputResponse > 64K
We were not checking to see if ioctl requests asked for more than
64K (ie when CIFSMaxBufSize was > 64K) so when setting larger
CIFSMaxBufSize then ioctls would fail with invalid parameter errors.
When requests ask for more than 64K in MaxOutputResponse then we
need to ask for more than 1 credit.

Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
2020-06-04 01:13:41 -05:00
Steve French 1ee0e6d47d smb3: default to minimum of two channels when multichannel specified
When "multichannel" is specified on mount, make sure to default to
at least two channels.

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2020-06-04 01:13:37 -05:00
Linus Torvalds 6929f71e46 atomisp: avoid warning about unused function
The atomisp_mrfld_power() function isn't actually ever called, because
the two call-sites have commented out the use because it breaks on some
platforms.  That results in:

  drivers/staging/media/atomisp/pci/atomisp_v4l2.c:764:12: warning: ‘atomisp_mrfld_power’ defined but not used [-Wunused-function]
    764 | static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
        |            ^~~~~~~~~~~~~~~~~~~

during the build.

Rather than commenting out the use entirely, just disable it
semantically instead (using a "0 &&" construct), leaving the call in
place from a syntax standpoint, and avoiding the warning.

I really don't want my builds to have any warnings that can then hide
real issues.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-03 21:22:46 -07:00
Linus Torvalds a98f670e41 media updates for v5.8-rc1
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Merge tag 'media/v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - Media documentation is now split into admin-guide, driver-api and
   userspace-api books (a longstanding request from Jon);

 - The media Kconfig was reorganized, in order to make easier to select
   drivers and their dependencies;

 - The testing drivers now has a separate directory;

 - added a new driver for Rockchip Video Decoder IP;

 - The atomisp staging driver was resurrected. It is meant to work with
   4 generations of cameras on Atom-based laptops, tablets and cell
   phones. So, it seems worth investing time to cleanup this driver and
   making it in good shape.

 - Added some V4L2 core ancillary routines to help with h264 codecs;

 - Added an ov2740 image sensor driver;

 - The si2157 gained support for Analog TV, which, in turn, added
   support for some cx231xx and cx23885 boards to also support analog
   standards;

 - Added some V4L2 controls (V4L2_CID_CAMERA_ORIENTATION and
   V4L2_CID_CAMERA_SENSOR_ROTATION) to help identifying where the camera
   is located at the device;

 - VIDIOC_ENUM_FMT was extended to support MC-centric devices;

 - Lots of drivers improvements and cleanups.

* tag 'media/v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (503 commits)
  media: Documentation: media: Refer to mbus format documentation from CSI-2 docs
  media: s5k5baf: Replace zero-length array with flexible-array
  media: i2c: imx219: Drop <linux/clk-provider.h> and <linux/clkdev.h>
  media: i2c: Add ov2740 image sensor driver
  media: ov8856: Implement sensor module revision identification
  media: ov8856: Add devicetree support
  media: dt-bindings: ov8856: Document YAML bindings
  media: dvb-usb: Add Cinergy S2 PCIe Dual Port support
  media: dvbdev: Fix tuner->demod media controller link
  media: dt-bindings: phy: phy-rockchip-dphy-rx0: move rockchip dphy rx0 bindings out of staging
  media: staging: dt-bindings: phy-rockchip-dphy-rx0: remove non-used reg property
  media: atomisp: unify the version for isp2401 a0 and b0 versions
  media: atomisp: update TODO with the current data
  media: atomisp: adjust some code at sh_css that could be broken
  media: atomisp: don't produce errs for ignored IRQs
  media: atomisp: print IRQ when debugging
  media: atomisp: isp_mmu: don't use kmem_cache
  media: atomisp: add a notice about possible leak resources
  media: atomisp: disable the dynamic and reserved pools
  media: atomisp: turn on camera before setting it
  ...
2020-06-03 20:59:38 -07:00
Linus Torvalds ee01c4d72a Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "More mm/ work, plenty more to come

  Subsystems affected by this patch series: slub, memcg, gup, kasan,
  pagealloc, hugetlb, vmscan, tools, mempolicy, memblock, hugetlbfs,
  thp, mmap, kconfig"

* akpm: (131 commits)
  arm64: mm: use ARCH_HAS_DEBUG_WX instead of arch defined
  x86: mm: use ARCH_HAS_DEBUG_WX instead of arch defined
  riscv: support DEBUG_WX
  mm: add DEBUG_WX support
  drivers/base/memory.c: cache memory blocks in xarray to accelerate lookup
  mm/thp: rename pmd_mknotpresent() as pmd_mkinvalid()
  powerpc/mm: drop platform defined pmd_mknotpresent()
  mm: thp: don't need to drain lru cache when splitting and mlocking THP
  hugetlbfs: get unmapped area below TASK_UNMAPPED_BASE for hugetlbfs
  sparc32: register memory occupied by kernel as memblock.memory
  include/linux/memblock.h: fix minor typo and unclear comment
  mm, mempolicy: fix up gup usage in lookup_node
  tools/vm/page_owner_sort.c: filter out unneeded line
  mm: swap: memcg: fix memcg stats for huge pages
  mm: swap: fix vmstats for huge pages
  mm: vmscan: limit the range of LRU type balancing
  mm: vmscan: reclaim writepage is IO cost
  mm: vmscan: determine anon/file pressure balance at the reclaim root
  mm: balance LRU lists based on relative thrashing
  mm: only count actual rotations as LRU reclaim cost
  ...
2020-06-03 20:24:15 -07:00
Jan Kara 6b8ed62008 ext4: avoid unnecessary transaction starts during writeback
ext4_writepages() currently works in a loop like:
  start a transaction
  scan inode for pages to write
  map and submit these pages
  stop the transaction

This loop results in starting transaction once more than is needed
because in the last iteration we start a transaction only to scan the
inode and find there are no pages to write. This can be significant
increase in number of transaction starts for single-extent files or
files that have all blocks already mapped. Furthermore we already know
from previous iteration whether there are more pages to write or not. So
propagate the information from mpage_prepare_extent_to_map() and avoid
unnecessary looping in case there are no more pages to write.

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20200525081215.29451-1-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2020-06-03 23:16:56 -04:00
Jens Axboe 6e014c621e ext4: don't block for O_DIRECT if IOCB_NOWAIT is set
Running with some debug patches to detect illegal blocking triggered the
extend/unaligned condition in ext4. If ext4 needs to extend the file (and
hence go to buffered IO), or if the app is doing unaligned IO, then ext4
asks the iomap code to wait for IO completion. If the caller asked for
no-wait semantics by setting IOCB_NOWAIT, then ext4 should return -EAGAIN
instead.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

Link: https://lore.kernel.org/r/76152096-2bbb-7682-8fce-4cb498bcd909@kernel.dk
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2020-06-03 23:16:55 -04:00
Christoph Hellwig ba98890393 ext4: remove the access_ok() check in ext4_ioctl_get_es_cache
access_ok just checks we are fed a proper user pointer.  We also do that
in copy_to_user itself, so no need to do this early.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20200523073016.2944131-10-hch@lst.de
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2020-06-03 23:16:55 -04:00
Christoph Hellwig c7d216e8c4 fs: remove the access_ok() check in ioctl_fiemap
access_ok just checks we are fed a proper user pointer.  We also do that
in copy_to_user itself, so no need to do this early.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Link: https://lore.kernel.org/r/20200523073016.2944131-9-hch@lst.de
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2020-06-03 23:16:55 -04:00
Christoph Hellwig 45dd052e67 fs: handle FIEMAP_FLAG_SYNC in fiemap_prep
By moving FIEMAP_FLAG_SYNC handling to fiemap_prep we ensure it is
handled once instead of duplicated, but can still be done under fs locks,
like xfs/iomap intended with its duplicate handling.  Also make sure the
error value of filemap_write_and_wait is propagated to user space.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Link: https://lore.kernel.org/r/20200523073016.2944131-8-hch@lst.de
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2020-06-03 23:16:55 -04:00
Christoph Hellwig cddf8a2c4a fs: move fiemap range validation into the file systems instances
Replace fiemap_check_flags with a fiemap_prep helper that also takes the
inode and mapped range, and performs the sanity check and truncation
previously done in fiemap_check_range.  This way the validation is inside
the file system itself and thus properly works for the stacked overlayfs
case as well.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Link: https://lore.kernel.org/r/20200523073016.2944131-7-hch@lst.de
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2020-06-03 23:16:55 -04:00