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[backport v1.14-branch] logging: wake up log process thread only when log message happen #19672

Merged
merged 1 commit into from
Oct 29, 2019
Merged

[backport v1.14-branch] logging: wake up log process thread only when log message happen #19672

merged 1 commit into from
Oct 29, 2019

Commits on Oct 21, 2019

  1. logging: wake up log process thread only when log message happen 

    Periodically wake up log process thread consume more power if system
already in sleep or deep sleep state. With the help of added logging
timer and semaphore, log process thread is woken up only when there
is logging message.

Fixes: zephyrproject-rtos#19982.

Signed-off-by: Wentong Wu <[email protected]>
    @wentongwu
    wentongwu committed Oct 21, 2019
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