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Filename :
plugin_irq.cpython-39.pyc
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a �]�i�& � @ sh d dl mZ d dlT ddlmZ ddlZddlZddlZej � � Z G dd� de �Z G dd� dej�ZdS ) � )�hotplug)�*� Nc @ s e Zd Zdd� ZdS )�IrqInfoc C s || _ d| | _d| _d | _d S )Nzirq%sF)�irq�device� unchangeable�original_affinity)�selfr � r �</usr/lib/python3.9/site-packages/tuned/plugins/plugin_irq.py�__init__ s zIrqInfo.__init__N)�__name__� __module__� __qualname__r r r r r r s r c s� e Zd ZdZ� fdd�Zdd� Zedd� �Zdd � Zd d � Z � fd d �Z � fdd�Z � fdd�Z dd� Z dd� Zdd� Zdd� Zdd� Zed d d d �d d!� �Zed"d#d$�d%d&� �Z� ZS )'� IrqPlugina� Allows tuning of IRQ affinities, and thus re-implements functionality already present in the `scheduler` plugin. However, this plugin offers more flexibility, as it allows tuning of individual interrupts with different affinities. When using the `irq` plugin, make sure to disable IRQ processing in the `scheduler` plugin by setting its option [option]`irq_process=false`. The plugin handles individual IRQs as devices and multiple plugin instances can be defined, each addressing different devices/irqs. The device names used by the plugin are `irq<n>`, where `<n>` is the IRQ number. The special device `DEFAULT` controls values written to `/proc/irq/default_smp_affinity`, which applies to all non-active IRQs. The option [option]`affinity` controls the IRQ affinity to be set. It is a string in "cpulist" format (such as `1,3-4`). If the configured affinity is empty, then the affinity of the respective IRQs is not touched. The option [option]`mode` is a string which can either be `set` (default) or `intersect`. In `set` mode the [option]`affinity` is always written as configured, whereas in `intersect` mode, the new affinity will be calculated as the intersection of the current and the configured affinity. If that intersection is empty, the configured affinity will be used. .Moving all IRQs to CPU0, except irq16, which is directed to CPU2 ==== ---- [irq_special] type=irq devices=irq16 affinity=2 [irq] affinity=0 ---- ==== c s( t t| ��||||||||� i | _d S �N)�superr r �_irqs) r Zmonitor_repositoryZstorage_factoryZhardware_inventoryZdevice_matcherZdevice_matcher_udevZplugin_instance_factoryZ global_cfgZ variables�� __class__r r r : s zIrqPlugin.__init__c C s� d| _ t� | _t� | _t�d�D ]F}tj�d|�}tj�|�r |� � r t |�}|| j |< | j� |j � q t d�}d|_ || j d< | j� |j � dS )z$Read /proc/irq to collect devices Tz /proc/irq�DEFAULTN)Z_devices_supported�setZ _free_devicesZ_assigned_devices�os�listdir�path�join�isdir�isdigitr r �addr )r �i�p�infoZ default_infor r r � _init_devicesA s zIrqPlugin._init_devicesc C s ddd�S )N� r )�affinity�moder )�clsr r r �_get_config_optionsS s �z IrqPlugin._get_config_optionsc C s� d|_ d|_| j�|j�d��}| j�|�}t|� � �dkrTt � d|j � d|_ n&t|�dkrzt �d|j |f � d|_ | j�|j�d��}|dvr�t �d ||j f � d |jd< d S ) NTFr% r z;Instance '%s' configured with empty affinity. Deactivating.z7Instance '%s' with invalid affinity '%s'. Deactivating.r& )r � intersectzOInvalid operating mode '%s' for instance '%s'. Using the default 'set' instead.r )Z_has_static_tuningZ_has_dynamic_tuningZ _variables�expand�options�get�_cmd�cpulist_unpack�len�strip�logr" �name�_active�error)r �instancer% Z affinity_listr& r r r �_instance_init] s �zIrqPlugin._instance_initc C s d S r r �r r5 r r r �_instance_cleanupr s zIrqPlugin._instance_cleanupc s$ t �d|j � tt| ��|� d S )Nz Applying IRQ affinities (%s))r1 �debugr2 r r �_instance_apply_staticr7 r r r r: u s z IrqPlugin._instance_apply_staticc s& t �d|j � tt| ��||� d S )Nz Unapplying IRQ affinities (%s))r1 r9 r2 r r �_instance_unapply_static)r r5 Zrollbackr r r r; y s z"IrqPlugin._instance_unapply_staticc s$ t �d|j � tt| ��|||�S )Nz Verifying IRQ affinities (%s))r1 r9 r2 r r �_instance_verify_static)r r5 �ignore_missingZdevicesr r r r< } s z!IrqPlugin._instance_verify_staticc C s� z\|dkrdnd| }t |d�� }|�� �� }W d � n1 sB0 Y t| j�|��W S ttfy� } z$t� d||f � t� W Y d}~S d}~0 0 dS )z�Get current IRQ affinity from the kernel Args: irq (str): IRQ number (as string) or "DEFAULT" Returns: affinity (set): set of all CPUs that belong to the IRQ affinity mask, if reading of the affinity fails, an empty set is returned r � /proc/irq/default_smp_affinity�/proc/irq/%s/smp_affinity�rNz)Failed to read SMP affinity of IRQ %s: %s) �open�readliner0 r r- Z hex2cpulist�OSError�IOErrorr1 r9 )r r �filename�f� affinity_hex�er r r �_get_irq_affinity� s *zIrqPlugin._get_irq_affinityc C s� zp| j �t|��}t�d||f � |dkr0dnd| }t|d��}|�|� W d � n1 sb0 Y W dS ttfy� } zdt |d�r�|j t j kr�|s�t�d | � W Y d}~d S t� d |||f � W Y d}~d S W Y d}~n d}~0 0 dS ) aD Set IRQ affinity in the kernel Args: irq (str): IRQ number (as string) or "DEFAULT" affinity (set): affinity mask as set of CPUs restoring (bool): are we rolling back a previous change? Returns: status (int): 0 on success, -2 if changing the affinity is not supported, -1 if some other error occurs z&Setting SMP affinity of IRQ %s to '%s'r r> r? �wNr �errnoz/Setting SMP affinity of IRQ %s is not supported���z0Failed to set SMP affinity of IRQ %s to '%s': %s���) r- Z cpulist2hex�listr1 r9 rA �writerC rD �hasattrrK ZEIOr4 )r r r% Z restoringrG rE rF rH r r r �_set_irq_affinity� s (zIrqPlugin._set_irq_affinityc C sn | � |j�}|dkr ||@ p |}|js.||kr2dS | �|j|d�}|dkr\|jdu rj||_n|dkrjd|_dS )zxApply IRQ affinity tuning Args: irqinfo (IrqInfo): IRQ that should be tuned affinity (set): desired affinity r) NFr rL T)rI r r rQ r )r �irqinfor% r& �original�resr r r �_apply_irq_affinity� s z IrqPlugin._apply_irq_affinityc C s0 |j s|jdu rdS | �|j|jd� d|_dS )zRRestore IRQ affinity Args: irqinfo (IrqInfo): IRQ that should be restored NT)r r rQ r )r rR r r r �_restore_irq_affinity� s z IrqPlugin._restore_irq_affinityc C s� |j r dS d|j }|}| j�| j�t|���}| �|j�}| j�| j�t|���}|dkrdd| }|dkrt||ks�|dkr�||kr�t�t j ||f � dS t� t j |||f � dS dS )z�Verify IRQ affinity tuning Args: irqinfo (IrqInfo): IRQ that should be verified affinity (set): desired affinity Returns: status (bool): True if verification successful, False otherwise TzIRQ %s affinityr) z subset of r FN) r r r- Zcpulist2stringZ cpulist_packrN rI r1 r" �constsZSTR_VERIFY_PROFILE_VALUE_OKr4 Z STR_VERIFY_PROFILE_VALUE_FAIL) r rR r% r& Zaffinity_descriptionZdesired_affinityZdesired_affinity_stringZcurrent_affinityZcurrent_affinity_stringr r r �_verify_irq_affinity� s, ����z IrqPlugin._verify_irq_affinityr& Fi����)� per_device�priorityc C s |s|r|d ur|| _ d S r )� _mode_val)r �enabling�value�verifyr= r5 r r r �_mode� s zIrqPlugin._moder% T)rY c C s� |dkr dn|t d�d � }|| jvr8t�d| � d S | j| }|rft| j�|��} | �|| | j�S |r�t| j�|��} | � || | j�S | � |�S d S )Nr r zUnknown device: %s) r/ r r1 r4 r r- r. rX r[ rU rV ) r r\ r] r r^ r= r5 r rR r% r r r � _affinity s zIrqPlugin._affinity)r r r �__doc__r r# � classmethodr( r6 r8 r: r; r< rI rQ rU rV rX Zcommand_customr_ r` � __classcell__r r r r r s& & " " r )r$ r Z decoratorsZ tuned.constsrW Z tuned.logsZtunedrK r Zlogsr, r1 �objectr ZPluginr r r r r �<module> s