Selon John Que <qwejohn@xxxxxxxxx>: > Hello, > Thanks. > If the timer you are talking about is not an interrupt driven > timer than it is not suitable; > or if it uses the usual linux timer interrupt than it is not > suitable because this timer interrupt occurs many times in a second. > > My aim is to write a simple module which generate single > interrupts which can be generated from user space > or by some hw (like a keyboard sequence). Hi, Why not hacking the SysReq linux feature? It's a keyboard sequence that trigger some internal mechanism to dump some interesting information (see Documentation/sysrq.txt) Christian > > For what is this good ? > I want to use it as a tool for tracing the interrupt > mechanism of Xen , which is a bit different than the ordinary one on > Linux. Since I don't want to add printk > messages in a way which will bloat and cause the kernel hang, I want > to use a driver like this. Generating single interrupts upon some > predefined action will help me a lot; > and also this explains (I hope) why I do not want to use timer (or > other device which causes a lot of interrupts per second): timer > interrupts frequency is too high. > > I will gladly answer any other questions regarding this. > John > > > On 7/26/05, Thomas Petazzoni <thomas.petazzoni@xxxxxxxx> wrote: > > Hello, > > > > John Que wrote: > > > > > If there is a way to do such a thing : to register a device interreupt > > > (in the range 1-16), so that a use space program (like ioctl , or cat > > > /dev/mymodle , etc.) will > > > generate such interrupt ? ( Or let's say pressing some keyboard > combinatiion ?) > > > > Can you be more precise about the condition under which your interrupt > > handler should be called ? > > > > I have the feeling that what you need is not an interrupt handler per-se > > but rather a timer. But give more details first. > > > > Sincerly, > > > > Thomas > > -- > > Thomas Petazzoni > > thomas.petazzoni@xxxxxxxx > > > > -- > Kernelnewbies: Help each other learn about the Linux kernel. > Archive: http://mail.nl.linux.org/kernelnewbies/ > FAQ: http://kernelnewbies.org/faq/ > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
