hi, In my application I want to override the timer interrupt, and I'm doing in this manner: disable_irq(0); /* disable timer irq first */ free_irq(0, NULL); /* free the old irq */ setup_irq(0, new_irq0); setup_irq() return with 0, however I got the following OOPs message: Bad page state in process 'swapper' page:81003e20 flags:0x00000400 mapping:00000000 mapcount:0 count:0 Trying to fix it up, but a reboot is needed Backtrace: Call Trace: [<8001819c>] dump_stack+0x8/0x34 [<8005ddc8>] bad_page+0x6c/0xa4 [<8005e600>] free_hot_cold_page+0x98/0x1e8 [<802074a8>] xm_init_clockevents+0x90/0xbc [<80215998>] xm_init+0x208/0x240 [<80206680>] kernel_init+0xec/0x310 [<800149e0>] kernel_thread_helper+0x10/0x18 So, is it possible to override the timer interrupt handler? Any hints is greatly appreciated. Regards, -- Wang, Baojun Lanzhou University Distributed & Embedded System Lab http://dslab.lzu.edu.cn School of Information Science and Engeneering wangbj@xxxxxxxxxxxxxxxx Tianshui South Road 222. Lanzhou 730000 .P.R.China Tel: +86-931-8912025 Fax: +86-931-8912022
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