user/sven/linux.git/kernel/time/alarmtimer.c, branch v5.10.48

kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data()

2021-03-25T08:04:16Z

commit 5abbe51a526253b9f003e9a0a195638dc882d660 upstream. Preparation for fixing get_nr_restart_syscall() on X86 for COMPAT. Add a new helper which sets restart_block->fn and calls a dummy arch_set_restart_data() helper. Fixes: 609c19a385c8 ("x86/ptrace: Stop setting TS_COMPAT in ptrace code") Signed-off-by: Oleg Nesterov Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20210201174641.GA17871@redhat.com Signed-off-by: Greg Kroah-Hartman

alarmtimer: Convert comma to semicolon

2020-08-25T10:45:53Z

Replace a comma between expression statements by a semicolon. Signed-off-by: Xu Wang Signed-off-by: Thomas Gleixner Reviewed-by: Stephen Boyd Link: https://lore.kernel.org/r/20200818062651.21680-1-vulab@iscas.ac.cn

time: Delete repeated words in comments

2020-08-10T20:14:07Z

Drop repeated words in kernel/time/. {when, one, into} Signed-off-by: Randy Dunlap Signed-off-by: Thomas Gleixner Acked-by: John Stultz Link: https://lore.kernel.org/r/20200807033248.8452-1-rdunlap@infradead.org

alarmtimer: Make alarmtimer_get_rtcdev() a stub when CONFIG_RTC_CLASS=n

2020-01-24T20:03:53Z

The stubbed version of alarmtimer_get_rtcdev() is not exported. so this won't work if this function is used in a module when CONFIG_RTC_CLASS=n. Move the stub function to the header file and make it inline so that callers don't have to worry about linking against this symbol. rtcdev isn't used outside of this ifdef so it's not required to be redefined to NULL. Drop that while touching this area. Signed-off-by: Stephen Boyd Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20200124055849.154411-4-swboyd@chromium.org

alarmtimer: Use wakeup source from alarmtimer platform device

2020-01-24T20:00:21Z

Use the wakeup source that can be associated with the 'alarmtimer' platform device instead of registering another one by hand. Signed-off-by: Stephen Boyd Signed-off-by: Thomas Gleixner Reviewed-by: Douglas Anderson Link: https://lore.kernel.org/r/20200124055849.154411-3-swboyd@chromium.org

alarmtimer: Make alarmtimer platform device child of RTC device

2020-01-24T20:00:20Z

The alarmtimer_suspend() function will fail if an RTC device is on a bus such as SPI or i2c and that RTC device registers and probes after alarmtimer_init() registers and probes the 'alarmtimer' platform device. This is because system wide suspend suspends devices in the reverse order of their probe. When alarmtimer_suspend() attempts to program the RTC for a wakeup it will try to program an RTC device on a bus that has already been suspended. Move the alarmtimer device registration to happen when the RTC which is used for wakeup is registered. Register the 'alarmtimer' platform device as a child of the RTC device too, so that it can be guaranteed that the RTC device won't be suspended when alarmtimer_suspend() is called. Reported-by: Douglas Anderson Signed-off-by: Stephen Boyd Signed-off-by: Thomas Gleixner Reviewed-by: Douglas Anderson Link: https://lore.kernel.org/r/20200124055849.154411-2-swboyd@chromium.org

alarmtimer: Update alarmtimer_get_rtcdev() docs to reflect reality

2020-01-24T20:00:20Z

This function doesn't do anything like this comment says when an RTC device hasn't been chosen. It looks like we used to do something like that before commit 8bc0dafb5cf3 ("alarmtimers: Rework RTC device selection using class interface") but that's long gone now. Remove this sentence to avoid confusing the reader. Signed-off-by: Stephen Boyd Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20200124055849.154411-5-swboyd@chromium.org

alarmtimer: Unregister wakeup source when module get fails

2020-01-15T10:16:54Z

The alarmtimer_rtc_add_device() function creates a wakeup source and then tries to grab a module reference. If that fails the function returns early with an error code, but fails to remove the wakeup source. Cleanup this exit path so there is no dangling wakeup source, which is named 'alarmtime' left allocated which will conflict with another RTC device that may be registered later. Fixes: 51218298a25e ("alarmtimer: Ensure RTC module is not unloaded") Signed-off-by: Stephen Boyd Signed-off-by: Thomas Gleixner Reviewed-by: Douglas Anderson Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200109155910.907-2-swboyd@chromium.org

alarmtimer: Make nanosleep() time namespace aware

2020-01-14T11:20:55Z

clock_nanosleep() accepts absolute values of expiration time when the TIMER_ABSTIME flag is set. This absolute value is inside the task's time namespace and has to be converted to the host's time. Co-developed-by: Dmitry Safonov Signed-off-by: Andrei Vagin Signed-off-by: Dmitry Safonov Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20191112012724.250792-16-dima@arista.com

posix-clocks: Wire up clock_gettime() with timens offsets

2020-01-14T11:20:52Z

Adjust monotonic and boottime clocks with per-timens offsets. As the result a process inside time namespace will see timers and clocks corrected to offsets that were set when the namespace was created Note that applications usually go through vDSO to get time, which is not yet adjusted. Further changes will complete time namespace virtualisation with vDSO support. Co-developed-by: Dmitry Safonov Signed-off-by: Andrei Vagin Signed-off-by: Dmitry Safonov Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20191112012724.250792-12-dima@arista.com