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KernelTrap: tty Cleanup

Jul 25, 2005, 10:45 (0 Talkback[s])


Re-Imagining Linux Platforms to Meet the Needs of Cloud Service Providers

"Alan Cox discussed his current efforts on improving the tty layer, 'at the moment tty buffers are attached directly to the tty. This is causing a lot of the problems related to tty layer locking, also problems at high speed and also with bursty data (such as occurs in virtualised environments).' The current implementation includes what are called 'flip buffers,' a per device buffer for data received from tty devices.

"Alan describes his current effort, 'I'm working on ripping out the flip buffers and replacing them with a pool of dynamically allocated buffers. This allows both for old style 'byte I/O' devices and also helps virtualisation and smart devices where large blocks of data suddenly materialise and need storing...'"

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