OK. I've written a module which installs a interrupt handler (the interrupt is a timer interrupt, generated by a cpm timer on a mpc823 board), i.e. every x microseconds the module executes a handling function. The handling function should read/write from/to a shared memory which can be accessed from a program that runs in user mode. To synch. the access to the shm I wanted to use semaphores... Or is there a way to write a interrupt handler in user mode which is executed by the module on every timer interrupt? Regards, Juergen -----Ursprüngliche Nachricht----- Von: Muli Ben-Yehuda [mailto:mulix@mulix.org] Gesendet: Montag, 24. November 2003 16:11 An: Juergen Oberhofer Cc: kernelnewbies@nl.linux.org Betreff: Re: insmod: unresolved symbol sys_shmat On Mon, Nov 24, 2003 at 02:28:27PM +0100, Juergen Oberhofer wrote: > > If you want shared memory (or mutual exclusion) between the kernel and > > a user space process, that's where the fun starts. > > Hm thats exactly what I'd need...;) In that case, I suggest you describe exactly what you're trying to do (including why), and we may be able to suggest a way to do it. Cheers, Muli -- Muli Ben-Yehuda http://www.mulix.org | http://mulix.livejournal.com/ "the nucleus of linux oscillates my world" - gccbot@#offtopic -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
