Fabrice Olivero 68e7fca45c Set kernel event logger timestamps to HW cycles ... OS tick period (usually 10 ms) is not sufficiently precise for task execution analysis (like processing CPU load per context) With that modification, the timestamp used by the kernel event logger is 32-bit LSB of platform HW timer (for example Lakemont APIC timer for Quark SE). This timer period is very small and leads to timestamp wraparound happening quite often (e.g. every 134s for Quark SE). This wraparound must be considered when analyzing kernel event logger data and care must be taken when tickless idle is enabled and sleep duration can exceed maximum HW timer value. Change-Id: Idc545da8f828a7357a69d83ff25c9afd09dab3c4 Signed-off-by: Fabrice Olivero <fabrice.olivero@intel.com>		2016-05-12 01:51:09 +00:00
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common
microkernel	microkernel: deprecate task IRQs	2016-04-15 16:02:12 +00:00
nanokernel	Set kernel event logger timestamps to HW cycles	2016-05-12 01:51:09 +00:00
overview
kernel.rst