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Addind volatile to tasks.c's runtime information to protect against compiler optimization

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As diskussed in https://forums.freertos.org/t/make-runtime-stats-working-with-compiler-optimization-enabled/9846 and on lined out on https://blog.the78mole.de/freertos-debugging-on-stm32-cpu-usage/, this makes run-time stats working with compiler optimizations.
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Daniel Glaser 2020-05-22 19:17:53 +02:00 • committed by GitHub
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commit 1bfc8e06bd
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tasks.c
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@ -393,7 +393,7 @@ PRIVILEGED_DATA static volatile UBaseType_t uxSchedulerSuspended = ( UBaseType_t
/* Do not move these variables to function scope as doing so prevents the
code working with debuggers that need to remove the static qualifier. */
PRIVILEGED_DATA static uint32_t ulTaskSwitchedInTime = 0UL; /*< Holds the value of a timer/counter the last time a task was switched in. */
PRIVILEGED_DATA static uint32_t ulTotalRunTime = 0UL; /*< Holds the total amount of execution time as defined by the run time counter clock. */
PRIVILEGED_DATA static volatile uint32_t ulTotalRunTime = 0UL; /*< Holds the total amount of execution time as defined by the run time counter clock. */
#endif