On Linux, how do you determine which individual pages are residents?

Question

How to determine which individual pages are resident (i.e. fixed in RAM)? On Linux, / proc / pid / smaps gives a fixed set of ranges, how many bytes are in that range, but this information does not tell you which memory resident ranges are resident.

Regarding what it is intended for use for: I already have data linking the distribution ranges to the source string information. This is useful for determining who allocates how much. Given the ranges of the resident cells, I could match the data to find who allocates how much memory was resident.

Thanks!

Answer 1

There is syscall for this:

mincore - determine whether pages are resident in memory int mincore(void *addr, size_t length, unsigned char *vec);