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Message-Id: <8AC92F9D-9E69-4332-9165-7B98C16D5050@gmail.com> Date: Thu, 19 Oct 2006 11:38:00 +0800 From: Kay Tiong Khoo <kaytiong@...il.com> To: Hagen Paul Pfeifer <hagen@...u.net> Cc: linux-kernel@...r.kernel.org Subject: Re: stopping a process during a timer interrupt Thanks! For the record, I was trying to sleep kernel threads as well as user threads. That didn't work out too well. All worked fine when I only attempted to sleep user threads. Kay Tiong On Oct 18, 2006, at 6:56 AM, Hagen Paul Pfeifer wrote: > * Kay Tiong Khoo | 2006-10-17 18:18:25 [+0800]: > >> On a timer interrupt, I tried to stop the current process by changing >> it's run state to TASK_STOPPED via set_current_state(TASK_STOPPED). >> However, this results in a system hang. >> >> I can't find a way to stop the current process during an interrupt >> context. Does such code exist in the kernel? If not, how does one go >> about implementing it from within a kernel module. > > Take a look at some driver implementations! > There you will find some ways how to put a process into a sleep state. > > Grep for "*->state*TASK_UNINTERRUPTIBLE" and take also a look at the > interaction with schedule() and spinlocks. > >> Thanks. >> Kay Tiong > > Best regards > > -- > Hagen Pfeifer - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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