[Devel] [PATCH vz7] ve/posix_timers: adjust CLOCK_BOOTTIME for CT

[Pavel Tikhomirov]

Reviewed-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>

On 02.12.2021 20:32, Nikita Yushchenko wrote:
> CLOCK_BOOTTIME operations must be adjusted similar to CLOCK_MONOTONIC
> operations, to work with CT boot time, not host boot time.
> 
> https://jira.sw.ru/browse/PSBM-136131
> https://bugs.openvz.org/browse/OVZ-7298
> Signed-off-by: Nikita Yushchenko <nikita.yushchenko at virtuozzo.com>
> ---
>   kernel/posix-timers.c | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
> index f565fe0e6503..127102cf2d0b 100644
> --- a/kernel/posix-timers.c
> +++ b/kernel/posix-timers.c
> @@ -146,6 +146,10 @@ void monotonic_abs_to_ve(clockid_t which_clock, struct timespec *tp)
>   		set_normalized_timespec(tp,
>   				tp->tv_sec - ve->start_timespec.tv_sec,
>   				tp->tv_nsec - ve->start_timespec.tv_nsec);
> +	else if (which_clock == CLOCK_BOOTTIME)
> +		set_normalized_timespec(tp,
> +				tp->tv_sec - ve->real_start_timespec.tv_sec,
> +				tp->tv_nsec - ve->real_start_timespec.tv_nsec);
>   }
>   
>   void monotonic_ve_to_abs(clockid_t which_clock, struct timespec *tp)
> @@ -156,6 +160,10 @@ void monotonic_ve_to_abs(clockid_t which_clock, struct timespec *tp)
>   		set_normalized_timespec(tp,
>   				tp->tv_sec + ve->start_timespec.tv_sec,
>   				tp->tv_nsec + ve->start_timespec.tv_nsec);
> +	else if (which_clock == CLOCK_BOOTTIME)
> +		set_normalized_timespec(tp,
> +				tp->tv_sec + ve->real_start_timespec.tv_sec,
> +				tp->tv_nsec + ve->real_start_timespec.tv_nsec);
>   	if (timespec_compare(tp, &zero_time) <= 0) {
>   		tp->tv_sec =  0;
>   		tp->tv_nsec = 1;
> 

-- 
Best regards, Tikhomirov Pavel
Software Developer, Virtuozzo.