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ÇѱÛÁ¦¸ñ(Korean Title) |
Xen-ARMÀÇ ¸ð¹ÙÀÏÆù Àû¿ëÀ» À§ÇÑ ½Ç½Ã°£ ÀÎÅÍ·´Æ® ó¸® Çʿ伺 ¹× ÇØ°á¹æ¾È |
¿µ¹®Á¦¸ñ(English Title) |
A Solution for Real-time Interrupt Handling in Xen-ARM to Apply to Mobile Phones |
ÀúÀÚ(Author) |
Á¶ÀçÇö
À¯½Ãȯ
°û±Ùȯ
À¯ Çõ
Jae Hyun Jo
Seehwan Yoo
Kuen-Hwan Kwak
Chuck Yoo
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¿ø¹®¼ö·Ïó(Citation) |
VOL 38 NO. 05 PP. 0249 ~ 0256 (2011. 10) |
Çѱ۳»¿ë (Korean Abstract) |
ÇöÀç ¸ð¹ÙÀÏ ÆùÀº ½Ç½Ã°£ ¿î¿µÃ¼Á¦¸¦ ±¸µ¿ÇÏ´Â CP(Communication Processor)¿Í ¹ü¿ë ¿î¿µÃ¼Á¦¸¦ ±¸µ¿ÇÏ´Â AP(Application Processor), µÎ °³ÀÇ ÇÁ·Î¼¼¼¸¦ »ç¿ëÇÏ°í ÀÖ´Ù. ÀÓº£µðµå °¡»óÈ´Â ÇϳªÀÇ Ä¥ À§¿¡ ½Ç½Ã°£ ¿î¿µÃ¼Á¦¿Í ¹ü¿ë ¿î¿µÃ¼Á¦¸¦ Åë½Ã¿¡ µ¿ÀÛ½Ãų ¼ö ÀÖ´Â ¼Ö·ç¼ÇÀ» Á¦°øÇϸé¼, °¢°¢ÀÇ ¿î¿µÃ¼Á¦°¡ ¼·Î °í¸³µÇ¾î µ¿ÀÛÇϵµ·Ï ÇÑ´Ù. µû¶ó¼ ÀÓº£µðµå °¡»óÈ ¼Ö·ç¼ÇÀ» ¸ð¹ÙÀÏ Æù¿¡ Àû¿ëÇϸé ÇϳªÀÇ ÇÁ·Î¼¼¼¸¦ »ç¿ëÇÏ¿© ºñ¿ëÀ» Àý¾àÇϸé¼, ÇÏÀÌÆÛ¹ÙÀÌÀú À§¿¡ °í¸³µÈ °¢°¢ÀÇ ¿î¿µÃ¼Á¦¸¦ ±¸µ¿ÇÒ ¼ö Àձ⠶§¹®¿¡ °¢±¤À» ¹Þ°í ÀÖ´Ù. Xen-ARMÀº ¸ð¹ÙÀÏ ±â±â¿¡¼ °¡Àå ¸¹ÀÌ »ç¿ëµÇ´Â ARM ÇÁ·Î¼¼¼¿¡¼ µ¿ÀÛÇÏ´Â ÇÏÀÌÆÛ¹ÙÀÌÀú·Î ÀÓº£µðµå ±â±âÀÇ Å¾À縦 ¸ñÀûÀ¸·Î °³¹ßµÇ¾ú´Ù. ±×·¯³ª ÇöÀçÀÇ Xen-ARMÀÇ Å©·¹µ÷ ½ºÄÉÁÙ·¯´Â CPU °øÆò¼º¿¡ Æ÷Ä¿½º¸¦ ¸ÂÃß°í ÀÖ¾î ½Ç½Ã°£ IO¸¦ Á¦ÇÑµÈ ½Ã°£ ¾È¿¡ ó¸®ÇÒ ¼ö ¾ø±â ¶§¹®¿¡, ½Ç½Ã°£ IO¸¦ ó¸®ÇØ¾ß ÇÏ´Â ÀÓº£µðµå ±â±â¿¡ Àû¿ëÇϱ⠾î·Æ´Ù. º» ³í¹®¿¡¼´Â ÇöÀç Xen-ARMÀÇ ½Ç½Ã°£ IO¸¦ Áö¿øÇÒ ¼ö ¾ø´Â °ÍÀ» ½ÇÇèÀ» ÅëÇØ º¸¿©ÁÖ°í, ½Ç½Ã°£ IO¸¦ Áö¿øÇϱâ À§ÇÑ ¹æ¾ÈÀ» Á¦½ÃÇÑ´Ù. ¶ÇÇÑ ¼öÁ¤µÈ Xen-ARMÀ» ¸ð¹ÙÀÏ Æù¿¡ Àû¿ëÇÏ´Â ¹æ¾È¿¡ ´ëÇØ Á¦½ÃÇÑ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Present mobile phones use dual CPUs as one is CP(Communication Processor) for real-time OS and the other is AP(Application Processor) for general purpose OS. Embedded virtualization is a solution for saving costs as it makes both real-time OS and general purpose OS run on one CPU with supporting isolation between two OSes. So, applying mobile virtualization solution to mobile phones is in the limelight. Xen-ARM is a hypervisor for running on ARM processors which are the most widely used in mobile devices. However, as current Xen-ARM scheduler doesn¡®t support real-time IO well and just only focuses on CPU fairness, it is difficult to apply Xen-ARM to embedded devices which essentially need real-time IO. This paper shows that current Xen-ARM doesn¡¯t support real-time IO well based on our experiments and introduces our enhanced scheduler to support real-time IO and the method for applying our scheduler to mobile phones. |
Å°¿öµå(Keyword) |
°¡»ó ¸Ó½Å
½Ç½Ã°£ ½Ã½ºÅÛ
Virtual machine
Xen-Arm
Real-time system
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ÆÄÀÏ÷ºÎ |
PDF ´Ù¿î·Îµå
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