Messages in this thread | | | Date | Mon, 08 Nov 2004 15:19:07 +0800 | From | mike <> | Subject | About Tasklet scheduling |
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Dear all
I am new to kernel driver development. Thanks for any help.
I am modifing a USB Ramdisk to a USB mass storage(MTD) driver in a dragonball ARM9 platform. I stop when using tasklet. The USB driver setup with endpoint 1 and 2 to be Interrupt IN and OUT point. So when ever there is a interrupt , I schedule the tasklet to read or write with semphone variable protection. The problem i am facing is that the read/write process is TOO SLOW for the host to response. I have tried to not use tasklet and call the read/write function directly, it works with small file but "schedule in interrupt" oops prompt out when transfer a large file . I have also try to use spin_lock_irqsave.. but it will stop the interrupt...
I am in a hurry on this. Please give me a hand.
Thanks
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