2024Äê7ÔÂ3ÈÕ

ÄÚ´æ¹ÜÀí-7-memblock×Óϵͳ-1-³õ̽

ÕªÒª£º »ùÓÚmsm-5.4 Ò»¡¢memblock¼ò½é ÏÖʵµÄÎïÀíÄÚ´æÊDZ»½ØµÄÒ»¶a56爆大奖在线娱乐»¶ÎµÄÁË£¬²¢²»ÊÇÒ»Âíƽ´¨µÄ¡£»ï°éϵͳҪ½øÐгõʼ»¯£¬¾ÍÐèÒªÖªµÀÄÄЩÇøÓòÊÇ¿ÉÓõģ¬ÄÄЩÇøÓòÒѾ­±»Õ¼ÓÃÁË¡¢±»±£ÁôÁË£¬Ê£ÓàµÄ²Å¿ÉÒÔÓÃÓÚ»ï°éϵͳµÄ³õʼ»¯¡£Òò´ËÐèÒªÒ»¸öÔçÆÚµÄÄÚ´æ¹ÜÀí»úÖÆ£¬¼´ memblock »úÖÆ. È«¾Ö±äÁ¿£º struc ÔĶÁÈ«ÎÄ

posted @ 2024-07-03 10:20 Hello-World3 ÔĶÁ(0) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

2024Äê7ÔÂ2ÈÕ

ÄÚ´æ¹ÜÀí-13-CMAÄÚ´æ-1-³õ̽

ÕªÒª£º »ùÓÚmsm-5.4 ¹Ø¼ü´Ê cma_alloc/cma_release MIGRATE_ISOLATE MIGRATE_CMA Ò»¡¢¸ÅÊö 1. CMA¼ò½é CMA£¨Contiguous Memory Alloctor£©Ö÷ÒªÓÃÓÚ·ÖÅä´ó¿éÁ¬ÐøµÄÎïÀíÄÚ´æ¡£»ï°éϵͳÄÜ·ÖÅäµÄ×î´óÁ¬ÐøÎïÀíÄÚ´æ¿éÊÇ2^10£¬¼´Ò» ÔĶÁÈ«ÎÄ

posted @ 2024-07-02 21:00 Hello-World3 ÔĶÁ(1) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

ÄÚ´æ¹ÜÀí-11-buddy»ï°é×Óϵͳ-2-Per-CPUÒ³Ö¡»º´æ

ÕªÒª£º »ùÓÚmsm-5.4 Ò»¡¢¸ÅÊö 1. ʵÏÖ±³¾° buddy×Óϵͳ¹ÜÀíµÄÎïÀíÒ³Ã棬¾ø´ó¶àÊý¶¼ÊÇ·ÅÔÚ zone::free_area[] ÖеÄÁ´±íÖУ¬ÉÙ²¿·Ö·ÅÔÚ zone::lowmem_reserve[] ÖС£»¹ÓÐÉÙÁ¿Ò³Ãæ·ÅÔÚzone::__percpu pageset Õâ¸öÿCPU±äÁ¿ÖУ¬Ã¿ÖÖǨÒÆÀàÐÍ ÔĶÁÈ«ÎÄ

posted @ 2024-07-02 14:43 Hello-World3 ÔĶÁ(1) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

ÄÚ´æ¹ÜÀí-11-buddy»ï°é×Óϵͳ-1-³õ̽

ÕªÒª£º »ùÓÚmsm-5.4 Ò»¡¢»ï°éϵͳ¸ÅÊö 1. ¼ò½é »ï°éϵͳÊÇÎïÀíÄÚ´æµÄÈý´ó¹ÜÀí»úÖÆÖ®Ò»£¬ÁíÍâÁ½¸öÊÇslab»º´æºÍper-cpuÒ³Ö¡»º´æ¡£##### ¹ÜÀíÎïÀíÄÚ´æʵ¼ÊÉϾÍÊǹÜÀí page ½á¹¹£¬½«pageÌí¼Óµ½²»Í¬Á´±íÉϽøÐйÜÀí¡£µ±Óû§ÉêÇëÄÚ´æµÄʱºò£¬´ÓÁ´±íÉÏÄÃÒ»¸öpage·µ»¹¸øÓû§£¬È»ºóÓû§¸ù¾Ýpa ÔĶÁÈ«ÎÄ

posted @ 2024-07-02 14:40 Hello-World3 ÔĶÁ(1) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

2024Äê7ÔÂ1ÈÕ

ÄÚ´æ¹ÜÀí-0-¿ªÆª

ÕªÒª£º Ò»¡¢Ê²Ã´ÊÇÄÚ´æ¹ÜÀí 1. »ù´¡ÄÚ´æ¹ÜÀí¿ÉÒÔ´óÖ·ÖΪ5¿é (1) ÎïÀíÄÚ´æ¹ÜÀí node¡¢zone¡¢page¡¢buddy-system¡¢slab (2) ÐéÄâÄÚ´æ¹ÜÀí ÐéÄâÄÚ´æ·ÖÓû§¿Õ¼äºÍÄں˿ռ䣬Óû§¿Õ¼äÓÖ·ÖΪºÜ¶à¶Î£¨´úÂë¶Î¡¢Êý¾Ý¶Î¡¢Õ»¡¢¶Ñ¡¢mmapÓ³ÉäÇø¡¢¶¯Ì¬¹²Ïí¿âµÈµÈ£©; Äں˿ռäÒ²ÊÇ·ÖΪºÜ¶àÇø ÔĶÁÈ«ÎÄ

posted @ 2024-07-01 16:24 Hello-World3 ÔĶÁ(1) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

ÄÚ´æ¹ÜÀí-9-ÄÚ´æ³£Óú꺯ÊýºÍÈ«¾Ö±äÁ¿

ÕªÒª£º »ùÓÚmsm-5.4 Ò»¡¢³£Óú꺯Êý 1. Ò³ÓëÒ³Ö¡ºÅת»» //include/asm-generic/memory_model.h #define pfn_to_page(pfn) (vmemmap + (pfn)) #define page_to_pfn(page) (unsigned long) ÔĶÁÈ«ÎÄ

posted @ 2024-07-01 16:08 Hello-World3 ÔĶÁ(1) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

2024Äê6ÔÂ28ÈÕ

ÄÚ´æ¹ÜÀí-8-ÄÚ´æÓ³Éä-1-µØÖ·Çø¼ä

ÕªÒª£º Ò»¡¢µØÖ·Çø¼äÃèÊö 1. PAGE_OFFSET ÏßÐÔÓ³ÉäµÄÆðʼÐéÄâµØÖ·£¬TTBR1 µØÖ·¿Õ¼äµÄ¿ªÊ¼¡£Ä¬ÈÏÊÇ 0xffffff8000000000 2. PAGE_ENDÏßÐÔÓ³ÉäµÄ½áÊøÐéÄâµØÖ·£¬ÆäËûÓ³Éä´ÓÕâÀ↑ʼ¡£Ä¬ÈÏÊÇ 0xffffffc000000000 PAGE_END - PAGE_OFFSE ÔĶÁÈ«ÎÄ

posted @ 2024-06-28 00:47 Hello-World3 ÔĶÁ(1) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

2024Äê6ÔÂ24ÈÕ

LinuxÉ豸Ê÷(5)¡ªÊµÏÖ

ÕªÒª£º Ò»¡¢DeviceTree¼ò½é 1. ½«Äں˵±×öÒ»¸öºÚºÐ£¬ÄÇôÆäÊäÈë²ÎÊýÓ¦¸Ã°üÀ¨£º (1) ʶ±ðplatformµÄÐÅÏ¢(2) runtimeµÄÅäÖòÎÊý(3) É豸µÄÍØÆ˽ṹÒÔ¼°ÌØÐÔ ¶ÔÓÚǶÈëʽϵͳ£¬ÔÚϵͳÆô¶¯½×¶Î£¬bootloader»á¼ÓÔØÄں˲¢½«¿ØÖÆȨת½»¸øÄںˣ¬´ËÍ⣬»¹ÐèÒª°ÑÉÏÊöµÄÈý¸ö²ÎÊýÐÅÏ¢´«µÝ ÔĶÁÈ«ÎÄ

posted @ 2024-06-24 18:39 Hello-World3 ÔĶÁ(7) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

2024Äê6ÔÂ19ÈÕ

ÄÚ´æ¹ÜÀí-6-ÐéÄâÄÚ´æÏà¹Ø½á¹¹Ìå

ÕªÒª£º »ùÓÚmsm-5.4 Ò»¡¢struct mm_struct 1. ¼ò½é ÄÚǶÔÚ task_struct ½á¹¹ÖУ¬a56爆大奖在线娱乐Ò»¸ö½ø³ÌÐéÄâµØÖ·¿Õ¼ä¡£ 2. ³ÉÔ±½éÉÜ //include/linux/mm_types.h struct mm_struct { struct { struct vm_area_str ÔĶÁÈ«ÎÄ

posted @ 2024-06-19 16:15 Hello-World3 ÔĶÁ(3) ÆÀÂÛ(0) ÍƼö(0) ±à¼­

2024Äê6ÔÂ18ÈÕ

ÄÚ´æ¹ÜÀí-5-ÎïÀíÄÚ´æ¹ÜÀí-1-Ïà¹Ø½á¹¹Ìå

ÕªÒª£º »ùÓÚmsm-5.4 ¸ÅÊö£º ÎïÀíÄÚ´æ×éÖ¯¹ØϵÈçÏÂͼ¡£·Ç·þÎñÆ÷µÄÉ豸£¬Ò»°ãÖ»ÓÐÒ»¸öÄÚ´ænode½Úµã£¬Ê¹Óà pglst_data ½á¹¹ÃèÊö£»Ò»¸öÄÚ´æ½ÚµãÏÂÓн϶à·ÖÇø£¬Ê¹Óà zone ½á¹¹ÃèÊö£»a56爆大奖在线娱乐·ÖÇøÖÐÓв»Í¬´óСµÄ¿ÕÏÐÄÚ´æ¿é£¬Í¨¹ý free_area ½á¹¹½øÐÐÃèÊö£»ÎïÀíÄÚ´æ¹ÜÀíµÄ×îСµ¥Î»Ê¹Óà page ÔĶÁÈ«ÎÄ

posted @ 2024-06-18 21:41 Hello-World3 ÔĶÁ(6) ÆÀÂÛ(0) ÍƼö(0) ±à¼­