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Inter-AlgorithmSynchronization
Itisimportanttonoticethatpreemptivesystemsmighthavegroupsofalgorithmsthatexecutewiththe
samepriority.Awell-designedDMAmanagerwouldassignthesamephysicalchannelstoalgorithmsat
thesamepriorityleveltoavoidthescenariosdescribedinSection6.15.4andSection6.15.5.This,of
course,requiresatleastonephysicalchannelforeachprioritylevel,whichmightnotalwaysbethecase.
Insummary,sharingaDMAdeviceamongalgorithmsatdifferentprioritiescanbeaccomplishedin
severaldifferentways.Intheend,itisthesystemintegrator'schoicebasedonitsavailableresources.
74UseoftheDMAResourceSPRU352G–June2005–RevisedFebruary2007
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