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task_wdt: add task-level watchdog subsystem

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This new subsystem can be used to supervise individual threads. It
is based on a regularly updated kernel timer, whose ISR is never
actually called in regular system operation.

An existing hardware watchdog can be used as an optional fallback if
the task watchdog itself gets stuck.

Signed-off-by: Martin Jäger <martin@libre.solar>
This commit is contained in:
Martin Jäger 2020-11-18 16:23:17 +01:00 • committed by Carles Cufí
commit 1aaf508bde
10 changed files with 448 additions and 0 deletions
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subsys/CMakeLists.txt
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@ -21,6 +21,7 @@ add_subdirectory_ifdef(CONFIG_SETTINGS settings)
add_subdirectory(fb)
add_subdirectory(power)
add_subdirectory(stats)
add_subdirectory(task_wdt)
add_subdirectory(testsuite)
add_subdirectory(tracing)
add_subdirectory_ifdef(CONFIG_JWT jwt)