Madvise is a system call used to give directions to the kernel about an address range.
#include <sys/mman.h>
int madvise(void *addr, size_t length, int advice);Some advice can include:
MADV_HUGEPAGE (enable huge pages for the range)MADV_SEQUENTIAL (expect sequential accesses in the
future)MADV_WILLNEED (expect access in the future)MADV_DONTNEED (don’t expect access in the future)MADV_FREE (the application no longer requires the
page(s), free them).