"you could assign your critical thread a higher priority than the ISRs." yeah,but i really want to know which situation really need to do this. 2009/1/20 Matthias Kaehlcke <matthias@xxxxxxxxxxxx>: > El Tue, Jan 20, 2009 at 01:17:11PM +0530 mayank rana ha dit: > >> I am looking for some particular case here. >> Here is the scenario: >> 1. I have one ISR which is getting called while I am receiving interrupts. >> 2. Now I have one more Kernel Code Function which is as critical as this >> ISR Execution. Is there any way to raise the Kernel Code function priority >> as ISR level.i.e. ISR is running in the context of Interrupt which is high >> priority, while the Kernel Code Function is running in Thread Context >> which is obviously having somewhat less priority. Do we have any >> mechnsm which allows us to raise the Kernel Code Function priority from >> Thread Context to Interrupt Context while executing it. > > this is possible with the RT patch: > > http://rt.wiki.kernel.org > git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-rt.git > http://www.kernel.org/pub/linux/kernel/projects/rt/ > > the patch converts interrupts into preemptable kernel threads. you > could assign your critical thread a higher priority than the ISRs > > -- > Matthias Kaehlcke > Embedded Linux Engineer > Barcelona > > For to be free is not merely to cast off > one's chains, but to live in a way that > respects and enhances the freedom of others > (Nelson Mandela) > .''`. > using free software / Debian GNU/Linux | http://debian.org : :' : > `. `'` > gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `- > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx > Please read the FAQ at http://kernelnewbies.org/FAQ > > -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
