Merge tag 'sysctl-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl

Pull sysctl updates from Joel Granados:

 - Move jiffies converters out of kernel/sysctl.c

   Move the jiffies converters into kernel/time/jiffies.c and replace
   the pipe-max-size proc_handler converter with a macro based version.
   This is all part of the effort to relocate non-sysctl logic out of
   kernel/sysctl.c into more relevant subsystems. No functional changes.

 - Generalize proc handler converter creation

   Remove duplicated sysctl converter logic by consolidating it in
   macros. These are used inside sysctl core as well as in pipe.c and
   jiffies.c. Converter kernel and user space pointer args are now
   automatically const qualified for the convenience of the caller. No
   functional changes.

 - Miscellaneous

   Fix kernel-doc format warnings, remove unnecessary __user
   qualifiers, and move the nmi_watchdog sysctl into .rodata.

 - Testing

   This series was run through sysctl selftests/kunit test suite in
   x86_64. It went into linux-next after rc2, giving it a good 4/5 weeks
   of testing.

* tag 'sysctl-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl: (21 commits)
  sysctl: Wrap do_proc_douintvec with the public function proc_douintvec_conv
  sysctl: Create pipe-max-size converter using sysctl UINT macros
  sysctl: Move proc_doulongvec_ms_jiffies_minmax to kernel/time/jiffies.c
  sysctl: Move jiffies converters to kernel/time/jiffies.c
  sysctl: Move UINT converter macros to sysctl header
  sysctl: Move INT converter macros to sysctl header
  sysctl: Allow custom converters from outside sysctl
  sysctl: remove __user qualifier from stack_erasing_sysctl buffer argument
  sysctl: Create macro for user-to-kernel uint converter
  sysctl: Add optional range checking to SYSCTL_UINT_CONV_CUSTOM
  sysctl: Create unsigned int converter using new macro
  sysctl: Add optional range checking to SYSCTL_INT_CONV_CUSTOM
  sysctl: Create integer converters with one macro
  sysctl: Create converter functions with two new macros
  sysctl: Discriminate between kernel and user converter params
  sysctl: Indicate the direction of operation with macro names
  sysctl: Remove superfluous __do_proc_* indirection
  sysctl: Remove superfluous tbl_data param from "dovec" functions
  sysctl: Replace void pointer with const pointer to ctl_table
  sysctl: fix kernel-doc format warning
  ...

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