Genp — Linux
#include <genp.h> int main() // Create a partition with 2MB private + 1MB borrow limit genp_partition_t *part = genp_create(2 * 1024 * 1024, 1 * 1024 * 1024);
When you hear "memory management" in Linux, you likely think of the Buddy Allocator, slab , or malloc . But there is a lesser-known, powerful concept used in specialized real-time and embedded Linux kernels: Generalized Partitioning (GenP) . genp linux
The kernel ensures that if genp_return() is not called within 100 ms, the global reclaim thread forcefully revokes the memory—even if it means invalidating the process’s mapping (handled via SIGSEGV recovery in safe designs). You might think: “Can’t cgroups limit memory and mlockall() lock pages?” #include <genp
: If you’re curious, grab the LITMUS^RT kernel (which implements resource partitioning) or look into the PikeOS hypervisor’s Linux guest partitioning. You might think: “Can’t cgroups limit memory and
In a traditional static partitioned system (common in ARINC 653-based avionics), each process or application gets a fixed block of memory. No sharing. No borrowing. This is safe but wasteful.