3 �<�e� �@snddlmZddlTddlZddlZddlZddlZddlZddl m Z ejj�Z e �ZGdd�dej�ZdS)�)�base)�*�N)�commandsc@s�eZdZdZedd��Zdd�Zdd�Zedd ��Ze d �dd��Z e d �dd��Zed �dd��Z ed �dd��Ze d�dd��Zed�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]. cCsdddd�S)N)�transparent_hugepages�transparent_hugepageztransparent_hugepage.defrag�)�selfr r �/usr/lib/python3.6/plugin_vm.py�_get_config_options%szVMPlugin._get_config_optionscCsd|_d|_dS)NTF)Z_has_static_tuningZ_has_dynamic_tuning)r �instancer r r�_instance_init-szVMPlugin._instance_initcCsdS)Nr )r r r r r�_instance_cleanup1szVMPlugin._instance_cleanupcCsd}tjj|�sd}|S)Nz#/sys/kernel/mm/transparent_hugepagez*/sys/kernel/mm/redhat_transparent_hugepage)�os�path�exists)r rr r r� _thp_path4szVMPlugin._thp_pathrcCs�|dkr"|stjdt|��dStjddd�}|jd�d krP|sLtjd �dStjj |j �d�}tjj|�r�|s�tj|||r�t jgndd�|S|s�tjd �dSdS)N�always�never�madvisez-Incorrect 'transparent_hugepages' value '%s'.z /proc/cmdlineT)�no_errorztransparent_hugepage=rzWtransparent_hugepage is already set in kernel boot cmdline, ignoring value from profile�enabledFzDOption 'transparent_hugepages' is not supported on current hardware.)rrr)�log�warn�str�cmd� read_file�find�inforr�joinrr� write_to_file�errno�ENOENT)r �value�sim�removeZcmdline�sys_filer r r�_set_transparent_hugepages<s$ z#VMPlugin._set_transparent_hugepagesrcCs|j|||�dS)N)r()r r$r%r&r r r�_set_transparent_hugepageUsz"VMPlugin._set_transparent_hugepagecCs6tjj|j�d�}tjj|�r.tjtj|��SdSdS)Nr)rrr rrr�get_active_optionr)r r'r r r�_get_transparent_hugepagesYsz#VMPlugin._get_transparent_hugepagescCs|j�S)N)r+)r r r r�_get_transparent_hugepagebsz"VMPlugin._get_transparent_hugepageztransparent_hugepage.defragcCsXtjj|j�d�}tjj|�rB|s>tj|||r6tjgndd�|S|sPt j d�dSdS)N�defragF)rzJOption 'transparent_hugepage.defrag' is not supported on current hardware.)rrr rrrr!r"r#rr)r r$r%r&r'r r r� _set_transparent_hugepage_defragfs z)VMPlugin._set_transparent_hugepage_defragcCs6tjj|j�d�}tjj|�r.tjtj|��SdSdS)Nr-)rrr rrrr*r)r r'r r r� _get_transparent_hugepage_defragssz)VMPlugin._get_transparent_hugepage_defragN)�__name__� __module__�__qualname__�__doc__�classmethodrrrrZcommand_setr(r)Zcommand_getr+r,r.r/r r r rrs r)�rZ decoratorsZ tuned.logsZtunedrr"�structZglobZtuned.utils.commandsrZlogs�getrrZPluginrr r r r�s