On Mon, 2006-11-27 at 09:24 +0100, Cestonaro, Thilo (external) wrote: > Hey, > > I'm a developer for Fujitsu Siemens Computers, working on a program which has > it's own kernel modules and userland components. > Now cause the program should be released we have done some testing and during > this testphase a wierd wasting of time occured > during the call of the ioctl() in the userland component and the actuall > entering of the dispatcher function in the module. > It takes 3 min. until the call at last enters my dispatcher. (Debugging > output with printf on line before ioctl() and printk as first line in the > dispatch function points that out). The dispatch function is the ioctl part > of the fileoperations struct which defines the module stuff. > > The kernel I'm running is the 2.6.16.21-0.8-default of SLED10 (32Bit), but > installed on a 64Bit machine. > Can anyone point me to, where I can have a look where the waste of time comes > from? > > The ioctl itself works fine afterwards, but the whole process is > time-critical so the 3 min. do hurt :(.
Hi, unfortunately you did not post the source code of at least your kernel driver, nor did you provide an URL to the source, so it's really hard for us to help you. Would you mind correcting this oversight? Greetings, Arjan van de Ven -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
