ravikumar wrote:
Hello All ,
I've a few questions.
1. Lets suppose i've some critical section and it is synchronized with
locks. A thread came and it's execution is in the middle of
critical section, at this time an interrupt was occurred which also
executes critical section. As interrupts can't wait on any lock it
will get lock and try to execute the critical section and above thread
was not yet completed. So inconsistency . How this was handled in Linux.
2.Some process is running in kernel mode, at this a kill was sent to
this process, does this signal will delivered to the process while it
is in kernel mode.
And also please provide some links how threads ,signals and
interrupts will be mixed.
Regards,
Ravikumar.
1.)This should play out slightly different on uniprocessor vs. SMP, but,
IIRC, during a critical section on uniprocessor IRQs are masked and
queued as they come in. In SMP, they should be routed to another
processor, which should queue them if they need locked resources.
Someone please correct me if I'm incorrect.
2.)I do not know the answer to this question. :) Does anyone else know?
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