linux-toradex.git/kernel/time/timekeeping.c, branch v5.12-rc7

timekeeping: Remove unused get_seconds()

2021-01-12T20:13:01+00:00

The get_seconds() cleanup seems to have been completed, now it is
time to delete the legacy interface to avoid misuse later.

Signed-off-by: Chunguang Xu 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/1606816351-26900-1-git-send-email-brookxu@tencent.com

Merge tag 'asm-generic-timers-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2020-12-16T08:07:17+00:00

Pull asm-generic cross-architecture timer cleanup from Arnd Bergmann:
 "This cleans up two ancient timer features that were never completed in
  the past, CONFIG_GENERIC_CLOCKEVENTS and CONFIG_ARCH_USES_GETTIMEOFFSET.

  There was only one user left for the ARCH_USES_GETTIMEOFFSET variant
  of clocksource implementations, the ARM EBSA110 platform. Rather than
  changing to use modern timekeeping, we remove the platform entirely as
  Russell no longer uses his machine and nobody else seems to have one
  any more.

  The conditional code for using arch_gettimeoffset() is removed as a
  result.

  For CONFIG_GENERIC_CLOCKEVENTS, there are still a couple of platforms
  not using clockevent drivers: parisc, ia64, most of m68k, and one Arm
  platform. These all do timer ticks slighly differently, and this gets
  cleaned up to the point they at least all call the same helper
  function.

  Instead of most platforms using 'select GENERIC_CLOCKEVENTS' in
  Kconfig, the polarity is now reversed, with the few remaining ones
  selecting LEGACY_TIMER_TICK instead"

* tag 'asm-generic-timers-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  timekeeping: default GENERIC_CLOCKEVENTS to enabled
  timekeeping: remove xtime_update
  m68k: remove timer_interrupt() function
  m68k: change remaining timers to legacy_timer_tick
  m68k: m68328: use legacy_timer_tick()
  m68k: sun3/sun3c: use legacy_timer_tick
  m68k: split heartbeat out of timer function
  m68k: coldfire: use legacy_timer_tick()
  parisc: use legacy_timer_tick
  ARM: rpc: use legacy_timer_tick
  ia64: convert to legacy_timer_tick
  timekeeping: add CONFIG_LEGACY_TIMER_TICK
  timekeeping: remove arch_gettimeoffset
  net: remove am79c961a driver
  ARM: remove ebsa110 platform

timekeeping: Address parameter documentation issues for various functions

2020-11-15T22:47:24+00:00

The kernel-doc parser complains:

 kernel/time/timekeeping.c:1543: warning: Function parameter or member
 'ts' not described in 'read_persistent_clock64'

 kernel/time/timekeeping.c:764: warning: Function parameter or member
 'tk' not described in 'timekeeping_forward_now'

 kernel/time/timekeeping.c:1331: warning: Function parameter or member
 'ts' not described in 'timekeeping_inject_offset'

 kernel/time/timekeeping.c:1331: warning: Excess function parameter 'tv'
 description in 'timekeeping_inject_offset'

Add the missing parameter documentations and rename the 'tv' parameter of
timekeeping_inject_offset() to 'ts' so it matches the implemention.

[ tglx: Reworded a few docs and massaged changelog ]

Signed-off-by: Alex Shi 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/1605252275-63652-5-git-send-email-alex.shi@linux.alibaba.com

timekeeping: Fix parameter docs of read_persistent_wall_and_boot_offset()

2020-11-15T22:47:24+00:00

Address the following kernel-doc markup warnings:

 kernel/time/timekeeping.c:1563: warning: Function parameter or member
 'wall_time' not described in 'read_persistent_wall_and_boot_offset'
 kernel/time/timekeeping.c:1563: warning: Function parameter or member
 'boot_offset' not described in 'read_persistent_wall_and_boot_offset'

The parameters are described but miss the leading '@' and the colon after
the parameter names.

[ tglx: Massaged changelog ]

Signed-off-by: Alex Shi 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/1605252275-63652-6-git-send-email-alex.shi@linux.alibaba.com

timekeeping: Add missing parameter docs for pvclock_gtod_[un]register_notifier()

2020-11-15T22:47:24+00:00

The kernel-doc parser complains about:
 kernel/time/timekeeping.c:651: warning: Function parameter or member
 'nb' not described in 'pvclock_gtod_register_notifier'
 kernel/time/timekeeping.c:670: warning: Function parameter or member
 'nb' not described in 'pvclock_gtod_unregister_notifier'

Add the missing parameter explanations.

[ tglx: Massaged changelog ]

Signed-off-by: Alex Shi 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/1605252275-63652-3-git-send-email-alex.shi@linux.alibaba.com

timekeeping: Fix up function documentation for the NMI safe accessors

2020-11-15T22:47:24+00:00

Alex reported the following warning:

 kernel/time/timekeeping.c:464: warning: Function parameter or member
 'tkf' not described in '__ktime_get_fast_ns'

which is not entirely correct because the documented function is
ktime_get_mono_fast_ns() which does not have a parameter, but the
kernel-doc parser looks at the function declaration which follows the
comment and complains about the missing parameter documentation.

Aside of that the documentation for the rest of the NMI safe accessors is
either incomplete or missing.

  - Move the function documentation to the right place
  - Fixup the references and inconsistencies
  - Add the missing documentation for ktime_get_raw_fast_ns()

Reported-by: Alex Shi 
Signed-off-by: Thomas Gleixner

timekeeping: Add missing parameter documentation for update_fast_timekeeper()

2020-11-15T22:47:24+00:00

Address the following warning:

 kernel/time/timekeeping.c:415: warning: Function parameter or member
 'tkf' not described in 'update_fast_timekeeper'

[ tglx: Remove the bogus ktime_get_mono_fast_ns() part ]

Signed-off-by: Alex Shi 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/1605252275-63652-2-git-send-email-alex.shi@linux.alibaba.com

timekeeping: Remove static functions from kernel-doc markup

2020-11-15T22:47:23+00:00

Various static functions in the timekeeping code have function comments
which pretend to be kernel-doc, but are incomplete and trigger parser
warnings.

As these functions are local to the timekeeping core code there is no need
to expose them via kernel-doc.

Remove the double star kernel-doc marker and remove excess newlines.

[ tglx: Massaged changelog and removed excess newlines ]

Signed-off-by: Alex Shi 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/1605252275-63652-4-git-send-email-alex.shi@linux.alibaba.com

timekeeping: remove xtime_update

2020-10-30T20:57:07+00:00

There are no more users of xtime_update aside from legacy_timer_tick(),
so fold it into that function and remove the declaration.

update_process_times() is now only called inside of the kernel/time/
code, so the declaration can be moved there.

Reviewed-by: Geert Uytterhoeven 
Tested-by: Geert Uytterhoeven 
Reviewed-by: Linus Walleij 
Signed-off-by: Arnd Bergmann

timekeeping: remove arch_gettimeoffset

2020-10-30T20:57:04+00:00

With Arm EBSA110 gone, nothing uses it any more, so the corresponding
code and the Kconfig option can be removed.

Acked-by: Thomas Gleixner 
Reviewed-by: Linus Walleij 
Signed-off-by: Arnd Bergmann