[Linux]How to alloc memory (kmalloc) in Linux ISR
cat/proc/buddyinfo分类:LINUXMakesureyou'refamiliarwithGFP_KERNELandGFP_ATOMIC.ThereisacertainamountofmemoryreservedforISRsetc.IfyouacquireitusingGFP_ATOMIC,thekernelguaranteesthatitdoesn'tsuspendyourISR