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转载 include/linux/mmzone.h

/* * The pg_data_t structure is used in machines with CONFIG_DISCONTIGMEM * (mostly NUMA machines?) to denote a higher-level memory zone than the * zone denotes. * * On NUMA machines, each NUMA no

2017-08-17 08:24:31 494

原创 arch/x86/mm/pageattr.c

arch/x86/include/asm/pgtable_types.h This header defines page attributes such as#define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)#define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW)#

2017-08-16 20:32:08 391

转载 include/linux/mm_types.h

/* * Each physical page in the system has a struct page associated with * it to keep track of whatever it is we are using the page for at the * moment. Note that we have no way to track which tasks

2017-08-16 20:05:39 938

GFP means Get Free PageGFP bitmasks are at include/linux/gfp.h This file has clear description for each kind of flags.Some important Macros#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)

2017-08-16 13:47:49 580

原创 System Call Related

sys_call_table: location: arch/x86/entry/syscalls/syscall_64.tbl It seems like syscalls_64.h is from this tbl file after Make.asmlinkage const sys_call_ptr_t sys_call_table[__NR_syscall_max+1]

2017-08-15 20:32:15 278

转载 Proc

Buddyinfo From https://www.centos.org/docs/5/html/5.2/Deployment_Guide/s2-proc-buddyinfo.htmlThis file is used primarily for diagnosing memory fragmentation issues. Using the buddy algorithm, each col

2017-08-15 13:39:41 375

转载 Linux Directory Structure

Here’s a really good introduction to Linux directory structure: https://www.tecmint.com/linux-directory-structure-and-important-files-paths-explained/I extracted the information as :Each of the above

2017-08-15 11:36:53 291

原创 Linux Kernel Code Directory Architecture

FoldersBased on the package linux-source-4.8.0 Folder name Description arch Architecture-specific files including c and assembly files block … certs … crypto … drivers … firmwa

2017-07-28 11:36:44 679

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