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PR_SET_THP_DISABLE(2const) — Linux manual page

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | STANDARDS | HISTORY | SEE ALSO | COLOPHON 

PR_SET_THP_DISABLE(2const)                    PR_SET_THP_DISABLE(2const)

NAME         top

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

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #include <linux/prctl.h>  /* Definition of PR_* constants */
       #include <sys/prctl.h>

       int prctl(PR_SET_THP_DISABLE, long flag, 0L, 0L, 0L);

DESCRIPTION         top

       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).

RETURN VALUE         top

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

STANDARDS         top

       Linux.

HISTORY         top

       Linux 3.15.

SEE ALSO         top

       prctl(2), PR_GET_THP_DISABLE(2const)

COLOPHON         top

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

Pages that refer to this page: prctl(2),  PR_GET_THP_DISABLE(2const)

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