PR_SET_THP_DISABLE - set the state of the "THP disable" flag for the calling thread

Set the state of the "THP disable" flag for the calling thread. If flag has a nonzero value, the flag is set, otherwise it is cleared. Setting this flag provides a method for disabling transparent huge pages for jobs where the code cannot be modified, and using a malloc hook with madvise(2) is not an option (i.e., statically allocated data). The setting of the "THP disable" flag is inherited by a child created via fork(2) and is preserved across execve(2).

Linux 3.15.

Standard C library (libc, -lc)

PR_SET_THP_DISABLE - set the state of the "THP disable" flag for the calling thread

On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.

prctl(2), PR_GET_THP_DISABLE(2const) Linux man-pages 6.9.1 2024-06-01 PR_SET_THP_DISABLE(2const)

Linux.

#include<linux/prctl.h> /* Definition of PR_* constants */ #include<sys/prctl.h>intprctl(PR_SET_THP_DISABLE,longflag,0L,0L,0L);