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kernel: timeout: do not active time slicing if idle thread ready

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zero slice_ticks when can't time slice so that next_timeout will
ignore slice_ticks of _current_cpu and system can stay low power
state longer time.

Fixes: #17368.

Signed-off-by: Wentong Wu <wentong.wu@intel.com>
This commit is contained in:
Wentong Wu 2019-07-24 17:17:33 +08:00 • committed by Andrew Boie
commit 2463ded4c8
1 changed files with 2 additions and 0 deletions
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kernel/sched.c
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@ -297,6 +297,8 @@ void z_time_slice(int ticks)
} else { } else {
_current_cpu->slice_ticks -= ticks; _current_cpu->slice_ticks -= ticks;
} }
} else {
_current_cpu->slice_ticks = 0;
} }
} }
#else #else