[PATCH v2 00/33] Documentation fixes for Kernel 5.8

[PATCH v2 00/33] Documentation fixes for Kernel 5.8

[Mauro Carvalho Chehab]

Patches 1 to 5 contain changes to the documentation toolset:

- The first 3 patches help to reduce a lot the number of reported
  kernel-doc issues, by making the tool more smart.

- Patches 4 and 5 are meant to partially address the PDF
  build, with now requires Sphinx version 2.4 or upper.

The remaining patches fix broken references detected by
this tool:

        ./scripts/documentation-file-ref-check

and address other random errors due to tags being mis-interpreted
or mis-used.

They are independent each other, but some may depend on
the kernel-doc improvements.

PS.: Due to the large number of C/C, I opted to keep a smaller
set of C/C at this first e-mail (only e-mails with "L:" tag from
MAINTAINERS file).

Jon,

Those patches should apply cleanly at docs-next, once you
pull from v5.7-rc1.


-

v2:

- patches re-ordered;
- added reviewed/acked-by tags;
- rebased on the top of docs-next + v5.7-rc1.


Mauro Carvalho Chehab (33):
  scripts: kernel-doc: proper handle @foo->bar()
  scripts: kernel-doc: accept negation like !@var
  scripts: kernel-doc: accept blank lines on parameter description
  docs: update recommended Sphinx version to 2.4.4
  docs: LaTeX/PDF: drop list of documents
  MAINTAINERS: dt: update display/allwinner file entry
  MAINTAINERS: dt: fix pointers for ARM Integrator, Versatile and
    RealView
  docs: dt: fix broken reference to phy-cadence-torrent.yaml
  docs: fix broken references to text files
  docs: fix broken references for ReST files that moved around
  docs: filesystems: fix renamed references
  docs: amu: supress some Sphinx warnings
  docs: arm64: booting.rst: get rid of some warnings
  docs: pci: boot-interrupts.rst: improve html output
  docs: ras: get rid of some warnings
  docs: ras: don't need to repeat twice the same thing
  docs: infiniband: verbs.c: fix some documentation warnings
  docs: spi: spi.h: fix a doc building warning
  docs: drivers: fix some warnings at base/platform.c when building docs
  docs: mm: userfaultfd.rst: use ``foo`` for literals
  docs: mm: userfaultfd.rst: use a cross-reference for a section
  docs: vm: index.rst: add an orphan doc to the building system
  docs: dt: qcom,dwc3.txt: fix cross-reference for a converted file
  docs: dt: fix a broken reference for a file converted to json
  docs: powerpc: cxl.rst: mark two section titles as such
  docs: i2c: rename i2c.svg to i2c_bus.svg
  docs: Makefile: place final pdf docs on a separate dir
  docs: dt: rockchip,dwc3.txt: fix a pointer to a renamed file
  ata: libata-core: fix a doc warning
  firewire: firewire-cdev.hL get rid of a docs warning
  fs: inode.c: get rid of docs warnings
  futex: get rid of a kernel-docs build warning
  lib: bitmap.c: get rid of some doc warnings

 Documentation/ABI/stable/sysfs-devices-node   |   2 +-
 Documentation/ABI/testing/procfs-smaps_rollup |   2 +-
 Documentation/Makefile                        |   6 +-
 Documentation/PCI/boot-interrupts.rst         |  34 +--
 Documentation/admin-guide/cpu-load.rst        |   2 +-
 Documentation/admin-guide/mm/userfaultfd.rst  | 209 +++++++++---------
 Documentation/admin-guide/nfs/nfsroot.rst     |   2 +-
 Documentation/admin-guide/ras.rst             |  18 +-
 Documentation/arm64/amu.rst                   |   5 +
 Documentation/arm64/booting.rst               |  36 +--
 Documentation/conf.py                         |  38 ----
 .../bindings/net/qualcomm-bluetooth.txt       |   2 +-
 .../bindings/phy/ti,phy-j721e-wiz.yaml        |   2 +-
 .../devicetree/bindings/usb/qcom,dwc3.txt     |   4 +-
 .../devicetree/bindings/usb/rockchip,dwc3.txt |   2 +-
 .../doc-guide/maintainer-profile.rst          |   2 +-
 .../driver-api/driver-model/device.rst        |   4 +-
 .../driver-api/driver-model/overview.rst      |   2 +-
 Documentation/filesystems/dax.txt             |   2 +-
 Documentation/filesystems/dnotify.txt         |   2 +-
 .../filesystems/ramfs-rootfs-initramfs.rst    |   2 +-
 Documentation/filesystems/sysfs.rst           |   2 +-
 Documentation/i2c/{i2c.svg => i2c_bus.svg}    |   2 +-
 Documentation/i2c/summary.rst                 |   2 +-
 Documentation/memory-barriers.txt             |   2 +-
 Documentation/powerpc/cxl.rst                 |   2 +
 .../powerpc/firmware-assisted-dump.rst        |   2 +-
 Documentation/process/adding-syscalls.rst     |   2 +-
 Documentation/process/submit-checklist.rst    |   2 +-
 Documentation/sphinx/requirements.txt         |   2 +-
 .../it_IT/process/adding-syscalls.rst         |   2 +-
 .../it_IT/process/submit-checklist.rst        |   2 +-
 .../translations/ko_KR/memory-barriers.txt    |   2 +-
 .../translations/zh_CN/filesystems/sysfs.txt  |   8 +-
 .../zh_CN/process/submit-checklist.rst        |   2 +-
 Documentation/virt/kvm/arm/pvtime.rst         |   2 +-
 Documentation/virt/kvm/devices/vcpu.rst       |   2 +-
 Documentation/virt/kvm/hypercalls.rst         |   4 +-
 Documentation/virt/kvm/mmu.rst                |   2 +-
 Documentation/virt/kvm/review-checklist.rst   |   2 +-
 Documentation/vm/index.rst                    |   1 +
 MAINTAINERS                                   |   7 +-
 arch/powerpc/include/uapi/asm/kvm_para.h      |   2 +-
 arch/x86/kvm/mmu/mmu.c                        |   2 +-
 drivers/ata/libata-core.c                     |   2 +-
 drivers/base/core.c                           |   2 +-
 drivers/base/platform.c                       |   6 +-
 .../allwinner/sun8i-ce/sun8i-ce-cipher.c      |   2 +-
 .../crypto/allwinner/sun8i-ce/sun8i-ce-core.c |   2 +-
 .../allwinner/sun8i-ss/sun8i-ss-cipher.c      |   2 +-
 .../crypto/allwinner/sun8i-ss/sun8i-ss-core.c |   2 +-
 drivers/gpu/drm/Kconfig                       |   2 +-
 drivers/gpu/drm/drm_ioctl.c                   |   2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h       |   2 +-
 drivers/hwtracing/coresight/Kconfig           |   2 +-
 drivers/infiniband/core/verbs.c               |   7 +-
 drivers/media/v4l2-core/v4l2-fwnode.c         |   2 +-
 fs/Kconfig                                    |   2 +-
 fs/Kconfig.binfmt                             |   2 +-
 fs/adfs/Kconfig                               |   2 +-
 fs/affs/Kconfig                               |   2 +-
 fs/afs/Kconfig                                |   6 +-
 fs/bfs/Kconfig                                |   2 +-
 fs/cramfs/Kconfig                             |   2 +-
 fs/ecryptfs/Kconfig                           |   2 +-
 fs/fat/Kconfig                                |   8 +-
 fs/fuse/Kconfig                               |   2 +-
 fs/fuse/dev.c                                 |   2 +-
 fs/hfs/Kconfig                                |   2 +-
 fs/hpfs/Kconfig                               |   2 +-
 fs/inode.c                                    |   6 +-
 fs/isofs/Kconfig                              |   2 +-
 fs/namespace.c                                |   2 +-
 fs/notify/inotify/Kconfig                     |   2 +-
 fs/ntfs/Kconfig                               |   2 +-
 fs/ocfs2/Kconfig                              |   2 +-
 fs/overlayfs/Kconfig                          |   6 +-
 fs/proc/Kconfig                               |   4 +-
 fs/romfs/Kconfig                              |   2 +-
 fs/sysfs/dir.c                                |   2 +-
 fs/sysfs/file.c                               |   2 +-
 fs/sysfs/mount.c                              |   2 +-
 fs/sysfs/symlink.c                            |   2 +-
 fs/sysv/Kconfig                               |   2 +-
 fs/udf/Kconfig                                |   2 +-
 include/linux/kobject.h                       |   2 +-
 include/linux/kobject_ns.h                    |   2 +-
 include/linux/mm.h                            |   4 +-
 include/linux/relay.h                         |   2 +-
 include/linux/spi/spi.h                       |   1 +
 include/linux/sysfs.h                         |   2 +-
 include/uapi/linux/ethtool_netlink.h          |   2 +-
 include/uapi/linux/firewire-cdev.h            |   2 +-
 include/uapi/linux/kvm.h                      |   4 +-
 include/uapi/rdma/rdma_user_ioctl_cmds.h      |   2 +-
 kernel/futex.c                                |   3 +
 kernel/relay.c                                |   2 +-
 lib/bitmap.c                                  |  27 +--
 lib/kobject.c                                 |   4 +-
 mm/gup.c                                      |  12 +-
 scripts/kernel-doc                            |  41 ++--
 tools/include/uapi/linux/kvm.h                |   4 +-
 virt/kvm/arm/vgic/vgic-mmio-v3.c              |   2 +-
 virt/kvm/arm/vgic/vgic.h                      |   4 +-
 104 files changed, 343 insertions(+), 326 deletions(-)
 rename Documentation/i2c/{i2c.svg => i2c_bus.svg} (99%)

-- 
2.25.2

[PATCH v2 14/33] docs: pci: boot-interrupts.rst: improve html output

[Mauro Carvalho Chehab]

There are some warnings with this file:

    /Documentation/PCI/boot-interrupts.rst:42: WARNING: Unexpected indentation.
    /Documentation/PCI/boot-interrupts.rst:52: WARNING: Block quote ends without a blank line; unexpected unindent.
    /Documentation/PCI/boot-interrupts.rst:92: WARNING: Unexpected indentation.
    /Documentation/PCI/boot-interrupts.rst:98: WARNING: Unexpected indentation.
    /Documentation/PCI/boot-interrupts.rst:136: WARNING: Unexpected indentation.

It turns that this file conversion to ReST could be improved,
in order to remove the warnings and provide a better output.

So, fix the warnings by adjusting blank lines, add a table and
some list markups. Also, mark endnodes as such.

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/PCI/boot-interrupts.rst | 34 +++++++++++++++------------
 1 file changed, 19 insertions(+), 15 deletions(-)

diff --git a/Documentation/PCI/boot-interrupts.rst b/Documentation/PCI/boot-interrupts.rst
index d078ef3eb192..2ec70121bfca 100644
--- a/Documentation/PCI/boot-interrupts.rst
+++ b/Documentation/PCI/boot-interrupts.rst
@@ -32,12 +32,13 @@ interrupt goes unhandled over time, they are tracked by the Linux kernel as
 Spurious Interrupts. The IRQ will be disabled by the Linux kernel after it
 reaches a specific count with the error "nobody cared". This disabled IRQ
 now prevents valid usage by an existing interrupt which may happen to share
-the IRQ line.
+the IRQ line::
 
   irq 19: nobody cared (try booting with the "irqpoll" option)
   CPU: 0 PID: 2988 Comm: irq/34-nipalk Tainted: 4.14.87-rt49-02410-g4a640ec-dirty #1
   Hardware name: National Instruments NI PXIe-8880/NI PXIe-8880, BIOS 2.1.5f1 01/09/2020
   Call Trace:
+
   <IRQ>
    ? dump_stack+0x46/0x5e
    ? __report_bad_irq+0x2e/0xb0
@@ -85,15 +86,18 @@ Mitigations
 The mitigations take the form of PCI quirks. The preference has been to
 first identify and make use of a means to disable the routing to the PCH.
 In such a case a quirk to disable boot interrupt generation can be
-added.[1]
+added. [1]_
 
-  Intel® 6300ESB I/O Controller Hub
+Intel® 6300ESB I/O Controller Hub
   Alternate Base Address Register:
    BIE: Boot Interrupt Enable
-	  0 = Boot interrupt is enabled.
-	  1 = Boot interrupt is disabled.
 
-  Intel® Sandy Bridge through Sky Lake based Xeon servers:
+	  ==  ===========================
+	  0   Boot interrupt is enabled.
+	  1   Boot interrupt is disabled.
+	  ==  ===========================
+
+Intel® Sandy Bridge through Sky Lake based Xeon servers:
   Coherent Interface Protocol Interrupt Control
    dis_intx_route2pch/dis_intx_route2ich/dis_intx_route2dmi2:
 	  When this bit is set. Local INTx messages received from the
@@ -109,12 +113,12 @@ line by default.  Therefore, on chipsets where this INTx routing cannot be
 disabled, the Linux kernel will reroute the valid interrupt to its legacy
 interrupt. This redirection of the handler will prevent the occurrence of
 the spurious interrupt detection which would ordinarily disable the IRQ
-line due to excessive unhandled counts.[2]
+line due to excessive unhandled counts. [2]_
 
 The config option X86_REROUTE_FOR_BROKEN_BOOT_IRQS exists to enable (or
 disable) the redirection of the interrupt handler to the PCH interrupt
 line. The option can be overridden by either pci=ioapicreroute or
-pci=noioapicreroute.[3]
+pci=noioapicreroute. [3]_
 
 
 More Documentation
@@ -127,19 +131,19 @@ into the evolution of its handling with chipsets.
 Example of disabling of the boot interrupt
 ------------------------------------------
 
-Intel® 6300ESB I/O Controller Hub (Document # 300641-004US)
+      - Intel® 6300ESB I/O Controller Hub (Document # 300641-004US)
 	5.7.3 Boot Interrupt
 	https://www.intel.com/content/dam/doc/datasheet/6300esb-io-controller-hub-datasheet.pdf
 
-Intel® Xeon® Processor E5-1600/2400/2600/4600 v3 Product Families
-Datasheet - Volume 2: Registers (Document # 330784-003)
+      - Intel® Xeon® Processor E5-1600/2400/2600/4600 v3 Product Families
+	Datasheet - Volume 2: Registers (Document # 330784-003)
 	6.6.41 cipintrc Coherent Interface Protocol Interrupt Control
 	https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e5-v3-datasheet-vol-2.pdf
 
 Example of handler rerouting
 ----------------------------
 
-Intel® 6700PXH 64-bit PCI Hub (Document # 302628)
+      - Intel® 6700PXH 64-bit PCI Hub (Document # 302628)
 	2.15.2 PCI Express Legacy INTx Support and Boot Interrupt
 	https://www.intel.com/content/dam/doc/datasheet/6700pxh-64-bit-pci-hub-datasheet.pdf
 
@@ -150,6 +154,6 @@ Cheers,
     Sean V Kelley
     sean.v.kelley@linux.intel.com
 
-[1] https://lore.kernel.org/r/12131949181903-git-send-email-sassmann@suse.de/
-[2] https://lore.kernel.org/r/12131949182094-git-send-email-sassmann@suse.de/
-[3] https://lore.kernel.org/r/487C8EA7.6020205@suse.de/
+.. [1] https://lore.kernel.org/r/12131949181903-git-send-email-sassmann@suse.de/
+.. [2] https://lore.kernel.org/r/12131949182094-git-send-email-sassmann@suse.de/
+.. [3] https://lore.kernel.org/r/487C8EA7.6020205@suse.de/
-- 
2.25.2

Re: [PATCH v2 00/33] Documentation fixes for Kernel 5.8

[Jonathan Corbet]

On Tue, 14 Apr 2020 18:48:26 +0200
Mauro Carvalho Chehab <mchehab+huawei@kernel.org> wrote:

> Patches 1 to 5 contain changes to the documentation toolset:
> 
> - The first 3 patches help to reduce a lot the number of reported
>   kernel-doc issues, by making the tool more smart.
> 
> - Patches 4 and 5 are meant to partially address the PDF
>   build, with now requires Sphinx version 2.4 or upper.
> 
> The remaining patches fix broken references detected by
> this tool:
> 
>         ./scripts/documentation-file-ref-check
> 
> and address other random errors due to tags being mis-interpreted
> or mis-used.
> 
> They are independent each other, but some may depend on
> the kernel-doc improvements.
> 
> PS.: Due to the large number of C/C, I opted to keep a smaller
> set of C/C at this first e-mail (only e-mails with "L:" tag from
> MAINTAINERS file).

OK, I've applied this set, minus #17 which was applied elsewhere.

Thanks,

jon