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a �]�i�" � @ sn d dl mZ d dlT ddlZddlZddlZddlZddlZddl m Z ej � � Z e � ZG dd� dej�ZdS )� )�base)�*� N)�commandsc @ s e Zd ZdZedd� �Zedd� �Zedd� �Zdd � Z d d � Z ed d � �Z e d�dd� �Z e d�dd� �Zed�dd� �Zed�dd� �Ze d�dd� �Zed�dd � �Zd d � Zd d � Zd!d"� Zed#�d$d%� �Zed&�d'd(� �Zed)�d*d+� �Zed,�d-d.� �Zd/d0� Z d1S )2�VMPlugina� Tunes selected sysctl options in `/proc/sys/vm`, currently [option]`dirty_ratio`, [option]`dirty_background_ratio`, [option]`dirty_bytes`, and [option]`dirty_background_bytes`. See https://docs.kernel.org/admin-guide/sysctl/vm.html for detailed documentation of these options. Additionaly enables or disables transparent huge pages depending on the 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 d d d d�S )N)�transparent_hugepages�transparent_hugepage�transparent_hugepage.defrag� dirty_bytes� dirty_ratio�dirty_background_bytes�dirty_background_ratio� )�selfr r �;/usr/lib/python3.9/site-packages/tuned/plugins/plugin_vm.py�_get_config_options) s �z VMPlugin._get_config_optionsc C s2 | j | d ur.| j | d ur.t�d||f � d S )NzEConflicting options '%s' and '%s', this may cause undefined behavior.)�options�log�warning)�instance�first�secondr r r � _check_conflicting_dirty_options5 s z)VMPlugin._check_conflicting_dirty_optionsc C s t j�d| �S )Nz /proc/sys/vm)�os�path�join)�optionr r r �_proc_sys_vm_option_path: s z!VMPlugin._proc_sys_vm_option_pathc C s, d|_ d|_| �|dd� | �|dd� d S )NTFr r r r )Z_has_static_tuningZ_has_dynamic_tuningr �r r r r r �_instance_init> s zVMPlugin._instance_initc C s d S �Nr r r r r �_instance_cleanupD s zVMPlugin._instance_cleanupc C s d}t j�|�sd}|S )Nz#/sys/kernel/mm/transparent_hugepagez*/sys/kernel/mm/redhat_transparent_hugepage)r r �exists)r r r r r � _thp_pathG s zVMPlugin._thp_pathr c C s� |dvr"|s t �dt|� � d S tjddd�}|�d�dkrP|sLt �d� d S tj� | � � d �}tj� |�r�|s�tj |||r�t jgnd d� |S |s�t �d � d S d S ) N)�always�neverZmadvisez-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�enabledFzDOption 'transparent_hugepages' is not supported on current hardware.)r r �str�cmd� read_file�find�infor r r r# r" � write_to_file�errno�ENOENT)r �valuer �sim�removeZcmdline�sys_filer r r �_set_transparent_hugepagesO s& � z#VMPlugin._set_transparent_hugepagesr c C s | � ||||� d S r )r4 )r r0 r r1 r2 r r r �_set_transparent_hugepageh s z"VMPlugin._set_transparent_hugepagec C s6 t j�| �� d�}t j�|�r.t�t�|��S d S d S )Nr' �r r r r# r" r) Zget_active_optionr* �r r r3 r r r �_get_transparent_hugepagesl s z#VMPlugin._get_transparent_hugepagesc C s | � |�S r )r8 r r r r �_get_transparent_hugepageu s z"VMPlugin._get_transparent_hugepager c C sX t j�| �� d�}t j�|�rB|s>tj|||r6tjgndd� |S |sPt � d� d S d S )N�defragFr& zJOption 'transparent_hugepage.defrag' is not supported on current hardware.) r r r r# r" r) r- r. r/ r r )r r0 r r1 r2 r3 r r r � _set_transparent_hugepage_defragy s � z)VMPlugin._set_transparent_hugepage_defragc C s6 t j�| �� d�}t j�|�r.t�t�|��S d S d S )Nr: r6 r7 r r r � _get_transparent_hugepage_defrag� s z)VMPlugin._get_transparent_hugepage_defragc C s4 dt t�d�� }||k r0t�d||f � dS dS )N� ZPAGESIZEz<The value of '%s' must be at least twice the page size (%s).FT)�intr) Zgetconfr �error)r r � int_valueZ min_bytesr r r �_check_twice_pagesize� s z VMPlugin._check_twice_pagesizec C s |dkrt �d| � dS dS )Nr z#The value of '%s' must be positive.FT�r r? �r r r@ r r r �_check_positive� s zVMPlugin._check_positivec C s, d| krdks(n t �d| � dS dS )Nr �d z,The value of '%s' must be between 0 and 100.FTrB rC r r r � _check_ratio� s zVMPlugin._check_ratior c C sL |d ur6|� � �d�r6| �dd| j||� � �d�|�S | �dd| j|||�S )N�%r r )�strip�endswith� _dirty_optionrF �rstriprA �r �enablingr0 �verifyZignore_missingr r r r � _dirty_bytes� s zVMPlugin._dirty_bytesr c C s t �d� | �dd| j|||�S )NzlThe 'dirty_ratio' option is deprecated and does not support inheritance, use 'dirty_bytes' with '%' instead.r r �r r rJ rF rL r r r � _dirty_ratio� s zVMPlugin._dirty_ratior c C sL |d ur6|� � �d�r6| �dd| j||� � �d�|�S | �dd| j|||�S )NrG r r )rH rI rJ rF rK rD rL r r r �_dirty_background_bytes� s z VMPlugin._dirty_background_bytesr c C s t �d� | �dd| j|||�S )Nz�The 'dirty_background_ratio' option is deprecated and does not support inheritance, use 'dirty_background_bytes' with '%' instead.r r rP rL r r r �_dirty_background_ratio� s z VMPlugin._dirty_background_ratioc C s� | � |�}| � |�}| j|d�} | j|d�} tj�|�sFt�d| � t�|�� � } |r`| |kS |�r z t |�} W n" t y� t� d| � Y d S 0 ||| �s�d S | |kr�t� d||f � |S t | �dkr�t�|�� � } | j�| | � n| j�| | � t� d||f � t�||� |S | j�| �}| j�| �}|d u�r^t� d||f � t�||� n8|d u�r�t� d||f � t�||� nt� d| � d S ) N)Z command_namez5Option '%s' is not supported on the current hardware.z%The value of '%s' must be an integer.z-Not setting option '%s' to '%s', already set.r z Setting option '%s' to '%s'.zSetting option '%s' to '%s'z:Not restoring '%s', previous value is the same or unknown.)r Z _storage_keyr r �isfiler r r) r* rH r> � ValueErrorr? r, Z_storage�setr- �get)r r Z counterpartZ check_funrM r0 rN Z option_pathZcounterpart_pathZ option_keyZcounterpart_keyZ current_valuer@ Zcurrent_counterpart_value� old_valueZold_counterpart_valuer r r rJ � sJ zVMPlugin._dirty_optionN) �__name__� __module__� __qualname__�__doc__� classmethodr � staticmethodr r r r! r# Z command_setr4 r5 Z command_getr8 r9 r; r< rA rD rF Zcommand_customrO rQ rR rS rJ r r r r r sF r )� r Z decoratorsZ tuned.logsZtunedr r. �struct�globZtuned.utils.commandsr ZlogsrW r r) ZPluginr r r r r �<module> s
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