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| author | Alejandro Colomar <alx@kernel.org> | 2024-05-30 17:41:39 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2024-05-31 17:09:32 +0200 |
| commit | f0c9393f6458ad6bd6c53cdc297df63d0eaaba9c (patch) | |
| tree | 4ca71d01c232bade5f580b2789a1b13b21c9f463 | |
| parent | e0db1fc6cff12960097ca34577649c7cead46b12 (diff) | |
| download | man-pages-f0c9393f6458ad6bd6c53cdc297df63d0eaaba9c.tar.gz | |
prctl.2, PR_SET_THP_DISABLE.2const: Split PR_SET_THP_DISABLE from prctl(2)
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| -rw-r--r-- | man/man2/prctl.2 | 20 | ||||
| -rw-r--r-- | man/man2const/PR_SET_THP_DISABLE.2const | 47 |
2 files changed, 50 insertions, 17 deletions
diff --git a/man/man2/prctl.2 b/man/man2/prctl.2 index 8e1578e082..6c59d2cb18 100644 --- a/man/man2/prctl.2 +++ b/man/man2/prctl.2 @@ -139,23 +139,8 @@ The first argument can be: .B PR_TASK_PERF_EVENTS_DISABLE .TQ .B PR_TASK_PERF_EVENTS_ENABLE -.\" prctl PR_SET_THP_DISABLE -.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 -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 -.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 -.BR fork (2) -and is preserved across -.BR execve (2). +.TQ +.B PR_SET_THP_DISABLE .\" prctl PR_GET_THP_DISABLE .TP .BR PR_GET_THP_DISABLE " (since Linux 3.15)" @@ -490,4 +475,5 @@ glibc 2.0.6 .BR PR_GET_TAGGED_ADDR_CTRL (2const), .BR PR_TASK_PERF_EVENTS_DISABLE (2const), .BR PR_TASK_PERF_EVENTS_ENABLE (2const), +.BR PR_SET_THP_DISABLE (2const), .BR core (5) diff --git a/man/man2const/PR_SET_THP_DISABLE.2const b/man/man2const/PR_SET_THP_DISABLE.2const new file mode 100644 index 0000000000..aac92ecbda --- /dev/null +++ b/man/man2const/PR_SET_THP_DISABLE.2const @@ -0,0 +1,47 @@ +.\" Copyright 2014, 2015, Michael Kerrisk <mtk.manpages@gmail.com> +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.TH PR_SET_THP_DISABLE 2const (date) "Linux man-pages (unreleased)" +.SH NAME +PR_SET_THP_DISABLE +\- +set the state of the "THP disable" flag for the calling thread +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <sys/prctl.h> +.P +.BI "int prctl(int " op ", ...);" +.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 +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 +.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 +.BR fork (2) +and is preserved across +.BR execve (2). +.SH RETURN VALUE +On success, +0 is returned. +On error, \-1 is returned, and +.I errno +is set to indicate the error. +.SH STANDARDS +Linux. +.SH HISTORY +.SH SEE ALSO +.BR prctl (2), +.BR PR_GET_THP_DISABLE (2const) |