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3 ��cN � @ sf d dl mZ d dlT ddlZddlZddlZddlZddlm Z ej j � Z e � Z G 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_cleanup0 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_path3 s zVMPlugin._thp_pathr c C s� |d kr"|s t jdt|� � d S tjddd�}|jd�d krP|sLt jd � d S tjj | j � d �}tjj |�r�|s~tj ||� |S |s�t jd � d S d S )N�always�never�madvisez-Incorrect 'transparent_hugepages' value '%s'.z /proc/cmdlineT)Zno_errorztransparent_hugepage=r zWtransparent_hugepage is already set in kernel boot cmdline, ignoring value from profile�enabledzDOption '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)r �value�simZcmdline�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 �_set_transparent_hugepageS 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_hugepagesW s z#VMPlugin._get_transparent_hugepagesc C s | j � S )N)r' )r r r r �_get_transparent_hugepage` s z"VMPlugin._get_transparent_hugepageztransparent_hugepage.defragc C sH t jj| j� d�}t jj|�r2|s.tj||� |S |s@tjd� d S d S )N�defragzJOption '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 � _set_transparent_hugepage_defragd 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_defragp 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 �structZglobZtuned.utils.commandsr Zlogs�getr r ZPluginr r r r r �<module> s