Linux instead maintains the concept of a three-level page table in the architecture- independent code even if the underlying architecture does not support it.

Чят, а как прибить процесс mount, который по kill -9 не прибивается? Any ideas? Собсна, даже ребутнуться не дает.

Хозяйке на заметку: Пач against 2.6.34.7 чтобы создавалось устройство /dev/one, которое возвращает 0xFF при чтении из него. diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 53dd7d0..21590ae 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -789,6 +789,24 @@ static ssize_t read_zero(struct file *file, char __user *buf, return written ? written : -EFAULT; } +static ssize_t read_one(struct file * file, char __user * buf, + size_t count, loff_t *ppos) +{ + size_t written; + unsigned long unwritten; + static int one = ~0; + + for (written = 0; written < count; written++) { + unwritten = copy_to_user(&buf[written], &one, 1); + if (unwritten) + break; + cond_resched(); + } + + return written ? written : -EFAULT; +} + + static int mmap_zero(struct file *file, struct vm_area_struct *vma) { #ifndef CONFIG_MMU @@ -860,6 +878,10 @@ static int open_port(struct inode * inode, struct file * filp) #define open_mem open_port #define open_kmem open_mem #define open_oldmem open_mem +#define one_lseek null_lseek +#define write_one write_null +#define mmap_one mmap_zero + #ifndef ARCH_HAS_DEV_MEM static const struct file_operations mem_fops = { @@ -930,6 +952,13 @@ static const struct file_operations oldmem_fops = { }; #endif +static const struct file_operations one_fops = { + .llseek = one_lseek, + .read = read_one, + .write = write_one, + .mmap = mmap_one, +}; + static ssize_t kmsg_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { @@ -977,6 +1006,7 @@ static const struct memdev { #ifdef CONFIG_CRASH_DUMP [12] = { "oldmem", 0, &oldmem_fops, NULL }, #endif + [13] = { "one", 0, &one_fops, NULL }, }; static int memory_open(struct inode *inode, struct file *filp)

Спустя три месяца юзания микрософтовской клавы обнаружил, что не работают клавиши F1-F12, лол.

flame-graphs - хорошая, годная тулза по визуализации лагов в ядре linux. http://dtrace.org/blogs/brendan/2012/03/.....me-graphs/

Running Symbolics Genera under linux. http://www.advogato.org/person/johnw/diary/12.html http://patrickcollison.com/blog/2008/04/lisp-machines

Тупые хомяки Линуса накрутили его фотке с кошкой 12000 лайков. Nice community yeah.

Understanding the bin, sbin, usr/bin , usr/sbin split ... /You know how Ken Thompson and Dennis Ritchie created Unix on a PDP-7 in 1969? Well around 1971 they upgraded to a PDP-11 with a pair of RK05 disk packs (1.5 megabytes each) for storage. When the operating system grew too big to fit on the first RK05 disk pack (their root filesystem) they let it leak into the second one, which is where all the user home directories lived (which is why the mount was called /usr). They replicated all the OS directories under there (/bin, /sbin, /lib, /tmp...) and wrote files to those new directories because their original disk was out of space. When they got a third disk, they mounted it on /home and relocated all the user directories to there so the OS could consume all the space on both disks and grow to THREE WHOLE MEGABYTES (ooooh!)./ ... http://lists.busybox.net/pipermail/busyb.....74114.html

И вновь продолжается бой^W очередной обновление ядра убила вмварь. ПАТЧ, ГДЕ ПАТЧ

Прекрасное с ЛОРа. _Можно ли использовать Slackware в школе?_ Разработал список программ для обучения: * Основная ОС - Slackware Linux. * Офис - LaTeX, Emacs. * Основы программирования - Haskell, Assembler. * Работа с БД - PostgreSQL. *Все правильно сделол*

Из интервью с Леннартом Поттерингом: /So, get yourself a copy of The Linux Programming Interface, ignore everything it says about POSIX compatibility and hack away your amazing Linux software. It's quite relieving!/ http://archive.fosdem.org/2011/interview.....poettering Поубывав бы.

Все-таки думаю провести scalability бенчмарки FreeBSD, NetBSD, DragonflyBSD, Linux 2.6 (может даже 2.4) Что еще потестить? Тесты буду делать на web-serverе gatling ( http://www.fefe.de/gatling/ ): * socket * bind * fork * mmap * touch after mmap * http request latency Какие тесты еще могут быть интересны? Содержание тестов описано тут: http://bulk.fefe.de/scalability/#code