From: Alejandro Colomar Date: Thu, 30 May 2024 15:48:47 +0000 (+0200) Subject: PR_SET_THP_DISABLE.2const: Tweak after split X-Git-Tag: man-pages-6.9~19^2~28 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=18bd7dad37cf66fa90c034f4bb07c286afd5e20e;p=thirdparty%2Fman-pages.git PR_SET_THP_DISABLE.2const: Tweak after split Signed-off-by: Alejandro Colomar --- diff --git a/man/man2const/PR_SET_THP_DISABLE.2const b/man/man2const/PR_SET_THP_DISABLE.2const index aac92ecbd..58c3adc07 100644 --- a/man/man2const/PR_SET_THP_DISABLE.2const +++ b/man/man2const/PR_SET_THP_DISABLE.2const @@ -1,4 +1,5 @@ .\" Copyright 2014, 2015, Michael Kerrisk +.\" Copyright 2024, Alejandro Colomar .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" @@ -14,19 +15,18 @@ Standard C library .nf .B #include .P -.BI "int prctl(int " op ", ...);" +.BI "int prctl(PR_SET_THP_DISABLE, long " flag ", 0L, 0L, 0L);" .fi .SH DESCRIPTION -.TP -.BR PR_SET_THP_DISABLE " (since Linux 3.15)" -.\" commit a0715cc22601e8830ace98366c0c2bd8da52af52 Set the state of the "THP disable" flag for the calling thread. If -.I arg2 +.I flag has a nonzero value, the flag is set, otherwise it is cleared. +.P 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 +for jobs where the code cannot be modified, +and using a malloc hook with .BR 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 @@ -42,6 +42,8 @@ is set to indicate the error. .SH STANDARDS Linux. .SH HISTORY +Linux 3.15. +.\" commit a0715cc22601e8830ace98366c0c2bd8da52af52 .SH SEE ALSO .BR prctl (2), .BR PR_GET_THP_DISABLE (2const)