Date: Wed, 8 Nov 2000 01:22:22 -0800 (PST) From: Matt Dillon <dillon@earth.backplane.com> To: Jacques Fourie <jacques4i@yahoo.com> Cc: freebsd-hackers@freebsd.org Subject: Re: kernel stack size? Message-ID: <200011080922.eA89MMQ98018@earth.backplane.com> References: <20001108082135.21027.qmail@web3504.mail.yahoo.com>
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: : :Would it be possible to pre-allocate a block of memory :and then "switch" stacks in my interrupt routine? This :may be far off, but my only other option is going :through ~10000 lines of code and examining all places :where local variables are declared. If I could somehow :do this in a different way, it would really help a :lot. : :regards, :jacques I think you are stuck. I would transplant most of the code into a user level process and have the interrupt and device driver just deal with getting the data to and from the user process. You can theoretically increase UPAGES in /usr/src/sys/i386/include/param.h but I dunno if that would work, and it would increase the size of every kernel stack for every process in the system. I get the feeling that your code eats more then just a few kilobytes of stack. It doesn't sound like something that belongs in the kernel. The only other choice would be to rewrite the code into a form suitable for the kernel's smaller stack. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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