PR_SET_THP_DISABLE(2const) PR_SET_THP_DISABLE(2const)
NAME
PR_SET_THP_DISABLE - set the state of the "THP disable" flag for the
calling thread
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <linux/prctl.h> /* Definition of PR_* constants */
#include <sys/prctl.h>
int prctl(PR_SET_THP_DISABLE, long flag, 0L, 0L, 0L);
DESCRIPTION
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 set-
ting of the "THP disable" flag is inherited by a child created via
fork(2) and is preserved across execve(2).
RETURN VALUE
On success, 0 is returned. On error, -1 is returned, and errno is set
to indicate the error.
STANDARDS
Linux.
HISTORY
Linux 3.15.
SEE ALSO
prctl(2), PR_GET_THP_DISABLE(2const)
Linux man-pages 6.9.1 2024-06-01 PR_SET_THP_DISABLE(2const)
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