Your IP : 18.117.231.160
3
�<�e�
� @ sn d dl mZ d dlT ddlZddlZddlZddlZddlZddl m
Z
ej j � Z
e
� ZG dd� dej�ZdS )� )�base)�*� N)�commandsc @ s� e Zd ZdZedd� �Zdd� Zdd� Zedd � �Ze d
�d d � �Z
e d
�dd� �Z e d
�dd� �Z
e d
�dd� �Ze d�dd� �Ze d�dd� �ZdS )�VMPlugina|
`vm`::
Enables or disables transparent huge pages depending on value of the
[option]`transparent_hugepages` option. The option can have one of three
possible values `always`, `madvise` and `never`.
+
.Disable transparent hugepages
====
----
[vm]
transparent_hugepages=never
----
====
+
The [option]`transparent_hugepage.defrag` option specifies the
defragmentation policy. Possible values for this option are `always`,
`defer`, `defer+madvise`, `madvise` and `never`. For a detailed
explanation of these values refer to
link:https://www.kernel.org/doc/Documentation/vm/transhuge.txt[Transparent Hugepage Support].
c C s d d d d�S )N)�transparent_hugepages�transparent_hugepageztransparent_hugepage.defrag� )�selfr r � /usr/lib/python3.6/plugin_vm.py�_get_config_options% s z VMPlugin._get_config_optionsc C s d|_ d|_d S )NTF)Z_has_static_tuningZ_has_dynamic_tuning)r
�instancer r r �_instance_init- s zVMPlugin._instance_initc C s d S )Nr )r
r
r r r �_instance_cleanup1 s zVMPlugin._instance_cleanupc C s d}t jj|�sd}|S )Nz#/sys/kernel/mm/transparent_hugepagez*/sys/kernel/mm/redhat_transparent_hugepage)�os�path�exists)r
r r r r � _thp_path4 s zVMPlugin._thp_pathr c C s� |dkr"|s t jdt|� � d S tjddd�}|jd�d krP|sLt jd
� d S tjj | j
� d �}tjj |�r�|s�tj |||r�t
jgnd d� |S |s�t jd
� d S d S )N�always�never�madvisez-Incorrect 'transparent_hugepages' value '%s'.z
/proc/cmdlineT)�no_errorztransparent_hugepage=r zWtransparent_hugepage is already set in kernel boot cmdline, ignoring value from profile�enabledFzDOption 'transparent_hugepages' is not supported on current hardware.)r r r )�log�warn�str�cmd� read_file�find�infor r �joinr r �
write_to_file�errno�ENOENT)r
�value�sim�removeZcmdline�sys_filer r r �_set_transparent_hugepages< s$
z#VMPlugin._set_transparent_hugepagesr c C s | j |||� d S )N)r( )r
r$ r% r& r r r �_set_transparent_hugepageU s z"VMPlugin._set_transparent_hugepagec C s6 t jj| j� d�}t jj|�r.tjtj|��S d S d S )Nr )r r r r r r �get_active_optionr )r
r' r r r �_get_transparent_hugepagesY s z#VMPlugin._get_transparent_hugepagesc C s | j � S )N)r+ )r
r r r �_get_transparent_hugepageb s z"VMPlugin._get_transparent_hugepageztransparent_hugepage.defragc C sX t jj| j� d�}t jj|�rB|s>tj|||r6tjgndd� |S |sPt j
d� d S d S )N�defragF)r zJOption 'transparent_hugepage.defrag' is not supported on current hardware.) r r r r r r r! r" r# r r )r
r$ r% r& r' r r r � _set_transparent_hugepage_defragf s
z)VMPlugin._set_transparent_hugepage_defragc C s6 t jj| j� d�}t jj|�r.tjtj|��S d S d S )Nr- )r r r r r r r* r )r
r' r r r � _get_transparent_hugepage_defrags s z)VMPlugin._get_transparent_hugepage_defragN)�__name__�
__module__� __qualname__�__doc__� classmethodr r r r Z command_setr( r) Z command_getr+ r, r. r/ r r r r r s
r )� r Z
decoratorsZ
tuned.logsZtunedr r" �structZglobZtuned.utils.commandsr Zlogs�getr r ZPluginr r r r r �<module> s