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1961. Laboratory for the Stellar Magnetism Study of SAO of the RAS - Magnetic stars -
... 7 (87878) 4 65 27 (marked "Magnetic Stars-2010") . ... Magnetic Stars-2010 . ... Contacts . ... Laboratory for the Stellar Magnetism Study of SAO of RAS . ...
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Ссылки http://jet.sao.ru/hq/lizm/conferences/2010/en/contacts.html -- 5.3 Кб -- 02.10.2012
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1962. Image directory
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Ссылки http://jet.sao.ru/hq/mas/foto/Baikal-2009/slides/frame.html -- 1.6 Кб -- 02.10.2012
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/mas/foto/Dasha/slides/frame.html -- 1.6 Кб -- 02.10.2012
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/mas/foto/splav/slides/frame.html -- 1.6 Кб -- 02.10.2012
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[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/mas/foto/Dasha/slides/frame.html -- 1.6 Кб -- 02.10.2012
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/mas/foto/splav/slides/frame.html -- 1.6 Кб -- 02.10.2012
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1963. Footnotes
c89 . c89 is the name of the Dec ANSI C compiler. Other compilers exist for example: acc - SUN's ANSI Compiler, cc - non-ANSI compiler, gcc - Gnu C compiler and whole host of proprietary compilers ( tcc - TURBO C) ...together. Even though we deal with UNIX and C nearly all the forthcoming discussions are applicable to MSDOS and other operating systems .. CEILIDH . ... Wed Sep 14 10:06:31 BST 1994 ...
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Ссылки http://jet.sao.ru/hq/sts/linux/book/c_marshall/CE.foot.html -- 2.1 Кб -- 02.10.2012
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1964. LWN: A simple block driver
... We'll begin by examining the simplest possible block driver. The sbd ("simple block device") driver simulates a block device with a region of kernel memory; it is, essentially, a naive ramdisk driver implemented in less than 200 lines of code. ... Another thing that (usually) goes into the gendisk is the request queue to use. ... Queue = blk_init_queue(sbd_request, &Device.lock); if (Queue == NULL) goto out; blk_queue_hardsect_size(Queue, hardsect_size); Device.gd->queue = Queue; . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/58719.html -- 24.7 Кб -- 02.10.2012
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1965. LWN: Creating Linux virtual filesystems
... LWN.net FAQ . ... Developers who populate their code with ioctl() implementations or /proc files are often encouraged to create a standalone virtual filesystem instead. ... The task we will undertake is not particularly ambitious: export a simple filesystem (of type "lwnfs") full of counter files. ... static struct dentry *lfs_create_file (struct super_block *sb, struct dentry *dir, const char *name, atomic_t *counter) { struct dentry *dentry; struct inode *inode; struct qstr qname; . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/57369.html -- 31.4 Кб -- 02.10.2012
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1966. LWN: Examining a kobject hierarchy
... LWN.net FAQ . ... This article is part of the LWN Porting Drivers to 2.5 series . ... At the root of the block subsystem hierarchy is a subsystem called block_subsys ; it is defined in drivers/block/genhd.c . ... As a result, this kobject will be represented in the top level of the sysfs hierarchy; it is the kobject which lurks behind /sys/block . ... In the block hierarchy, disks are defined by a struct gendisk , which can be found in <include/linux/genhd.h> . ... Examining a kobject hierarchy . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/55847.html -- 19.8 Кб -- 02.10.2012
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1967. LWN: kobjects and sysfs
... LWN.net Weekly Edition for March 18, 2004 . ... Most applications will want the kobject's sysfs entry to contain one or more attributes with useful information. ... The key to sysfs attributes is the kobject's kobj_type pointer. ... struct sysfs_ops { ssize_t (*show)(struct kobject *kobj, struct attribute *attr, char *buffer); ssize_t (*store)(struct kobject *kobj, struct attribute *attr, const char *buffer, size_t size); }; . ... int sysfs_create_file(struct kobject *kobj, struct attribute *attr); ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/54651.html -- 20.8 Кб -- 02.10.2012
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1968. LWN: kobjects and hotplug events
... LWN.net FAQ . ... Last week, in the article about kobjects , it was mentioned that a kset has a set of hotplug operations. ... The kobject and the kset which are being used for the hotplug event are passed as parameters to the function. ... static int dev_hotplug_filter(struct kset *kset, struct kobject *kobj) { struct kobj_type *ktype = get_ktype(kobj); if (ktype == &ktype_device) { struct device *dev = to_dev(kobj); if (dev->bus) return 1; } return 0; } . ... kobjects and hotplug events . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/52621.html -- 21.5 Кб -- 02.10.2012
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1969. LWN: The zen of kobjects
... LWN.net FAQ . ... The "kobject" structure first made its appearance in the 2.5.45 development kernel. ... A kobject is an object of type struct kobject . ... A kset is a group of kobjects all of which are embedded in structures of the same type. ... Every kobject needs to have an associated kobj_type structure; a pointer to that structure can be placed in the kobject's ktype field at initialization time, or (more likely) it can be defined by the kobject's containing kset. ... The zen of kobjects . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/51437.html -- 36.0 Кб -- 02.10.2012
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1970. LWN: Driver porting: Char devices and large dev_t
... LWN.net FAQ . ... This article is part of the LWN Porting Drivers to 2.6 series . Much 2.5 kernel development work went toward increasing the size of the dev_t device number type. ... Attempts to open a device node with a larger minor number will simply fail with a "no such device" error. ... There is now a separate object ( struct cdev ) which represents char devices, and which must be set up by your driver to actually make a device available. ... Driver porting: Char devices and large dev_t . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/49684.html -- 23.2 Кб -- 02.10.2012
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1971. LWN: Changes to the USB driver API for the 2.5 series kernel
... Over the 2.5 kernel development series, the USB driver api has changed a lot. As LWN has graciously allowed me to write a kernel article this week, and I know a bit about the USB kernel code, I thought I would discuss a short summary of the major changes that have happened with it for anyone wanting to port a 2.4 USB driver to 2.5. ... The biggest change in the USB api between the 2.4 and 2.5 kernels is much improved documentation. ... Changes to the USB driver API for the 2.5 series kernel . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/39249.html -- 18.0 Кб -- 02.10.2012
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1972. LWN: Using read-copy-update
... LWN.net FAQ . ... Read-copy-update (RCU) is a mutual exclusion technique which can operate without locking most of the time. It can yield significant performance benefits when the data to be protected is accessed via a pointer, is read frequently, changed rarely, and references to the structure are not held while a kernel thread sleeps. The core idea behind RCU is that, when the data requires updating, a pointer to a new structure containing the new data can be stored immediately. ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/37889.html -- 15.8 Кб -- 02.10.2012
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1973. LWN: Driver porting: Device classes
... This article is part of the LWN Porting Drivers to 2.6 series . ... To help with this sort of resource discovery issue, the driver model exports a "class" interface. Devices, once registered, can be associated with one or more classes which describe the function(s) performed by the device. ... int (*hotplug)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size); . ... struct class *class; int (*add) (struct class_device *); void (*remove) (struct class_device *); . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/31370.html -- 18.6 Кб -- 02.10.2012
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1974. LWN: Driver porting: Device model overview
... This article is part of the LWN Porting Drivers to 2.6 series . One of the more significant changes in the 2.5 development series is the creation of the integrated device model. The device model was originally intended to make power management tasks easier through the maintenance of a representation of the host system's hardware structure. ... Which devices exist in the system, what power state they are in, what bus they are attached to, and which driver is responsible for them. ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/31185.html -- 16.4 Кб -- 02.10.2012
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1975. LWN: Driver porting: Network drivers
... Kernel . ... This article is part of the LWN Porting Drivers to 2.6 series . Much of the core network driver API has not been changed between the 2.4 and 2.6 kernels. ... Instead, your driver should disable any further "packet available" interrupts and tell the networking subsystem to poll your driver shortly to pick up all available packets. ... The next step is to create a poll() method for your driver; it's job is to obtain packets from the network interface and feed them into the kernel. ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/30107.html -- 21.1 Кб -- 02.10.2012
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1976. LWN: Driver porting: Atomic kmaps
... Kernel . ... This article is part of the LWN Porting Drivers to 2.6 series . ... In fact, there are only about a dozen atomic kmap slots available on each processor (the actual number is architecture-dependent), and users of atomic kmaps must specify which slot to use. ... void *kmap_atomic(struct page *page, enum km_type type); . The return value is a kernel virtual address which may be used to address the given page. kmap_atomic() will always succeed, since the slot to use has been given to it. ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/29564.html -- 13.6 Кб -- 02.10.2012
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1977. LWN: Driver porting: supporting mmap()
... Summary page . Return to the Kernel page . ... This article is part of the LWN Porting Drivers to 2.6 series . ... int remap_page_range(struct vm_area_struct *vma, unsigned long from, unsigned long to, unsigned long size, pgprot_t prot); . ... Drivers will almost invariably call remap_page_range() from their mmap() method, where that semaphore is already held. ... int install_page(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long addr, struct page *page, pgprot_t prot); . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/28746.html -- 16.2 Кб -- 02.10.2012
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1978. LWN: Driver porting: Zero-copy user-space access
... Summary page . ... Printable page . ... This article is part of the LWN Porting Drivers to 2.6 series . ... If you have a char driver which needs direct user-space access (a high-performance streaming tape driver, say), then you'll want to map user-space pages yourself. ... int get_user_pages(struct task_struct *task, struct mm_struct *mm, unsigned long start, int len, int write, int force, struct page **pages, struct vm_area_struct **vmas); . ... Driver porting: Zero-copy user-space access . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/28548.html -- 17.4 Кб -- 02.10.2012
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1979. LWN: Driver porting: DMA changes
... This article is part of the LWN Porting Drivers to 2.6 series . The direct memory access (DMA) support layer has been extensively changed in 2.6, but, in many cases, device drivers should work unaltered. ... void *pci_alloc_consistent(struct pci_dev *dev, size_t size, dma_addr_t *dma_handle); void pci_free_consistent(struct pci_dev *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle); . ... void *dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle, int flag); . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/28092.html -- 19.0 Кб -- 02.10.2012
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1980. LWN: Driver porting: Request Queues II
... This article is part of the LWN Porting Drivers to 2.6 series . This article continues the look at request queues in 2.6; if you've not read the first part in the request queue series, you may want to start there. ... typedef int (prep_rq_fn) (request_queue_t *q, struct request *rq); . ... To add your prep function to a request queue, call: . ... int blk_queue_init_tags(request_queue_t *q, int depth, struct blk_queue_tag *tags); . ... void blk_queue_free_tags(request_queue_t *q); . ...
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Ссылки http://jet.sao.ru/hq/sts/linux/doc/porting_to_26/27361.html -- 19.5 Кб -- 02.10.2012
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