once u get the task_struct of the deadlocked process, u can get the state from the 'state' field in the structure. BTW, how are u going to find out which process has deadlocked? On 6/8/06, Ohad Ben-Cohen <ohadbc@xxxxxxxxx> wrote:
On 6/8/06, Vincenzo Mallozzi <vinjunior@xxxxxxxx> wrote: > Is there a deterministic way to know if a process is in deadlock have state > TASK_INTERRUPTIBLE or TASK_UNINTERRUPTIBLE? > I really need this information to know if some threads are in such a > situation. > How can I resolve this problem? Is there another solution? It's a little weird question. can you please elaborate more on the problem ? what's going on ? why do you need this ? if you think you have deadlocks, why not just try to solve them ? anyway, you might be interested to examine a recent kernel patch posted by Ingo Molnar, which is called "the kernel lock validator". it essentially hunts down possible deadlocks in the kernel. read on in http://lwn.net/Articles/185666/ Ohad. > Thanks. > Vincenzo > > On Wednesday 07 June 2006 15:16, William J Beksi wrote: > > Vincenzo Mallozzi wrote: > > > > >Hi, > > >what is the task state of some processes/threads that are in a deadlock > > >situation? I've heard about TASK_UNINTERRUPTIBLE. Is not it? > > > > > > > > In a deadlock situation both tasks are waiting for a resource that is > > held by another task, therefore none of the other tasks waiting for that > > resource can proceed. In TASK_INTERRUPTIBLE/TASK_UNINTERRUPTIBLE the > > task is in a sleeping state with the exception that TASK_UNINTERRUPTIBLE > > cannot be woken up by a signal. So it seems a deadlock can occur with a > > task in an interruptible or uniterruptible state. > > > > William > > > > > ___________________________________ > Yahoo! Messenger with Voice: chiama da PC a telefono a tariffe esclusive > http://it.messenger.yahoo.com > > > -- > 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/
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