Top "Preemption" questions

What is an uninterruptible process?

Sometimes whenever I write a program in Linux and it crashes due to a bug of some sort, it will …

linux scheduling preemption
What is preemption / What is a preemtible kernel? What is it good for?

Explained in your own words, what is preemption and what does it mean to a (linux) kernel? What are advantages …

linux operating-system kernel preemption
What does it mean to say "linux kernel is preemptive"?

I read that Linux kernel is preemptive, which is different from most Unix kernels. So, what does it really mean …

linux linux-kernel multitasking preemption
Why disabling interrupts disables kernel preemption and how spin lock disables preemption

I am reading Linux Kernel Development recently, and I have a few questions related to disabling preemption. In the "Interrupt …

linux linux-kernel interrupt spinlock preemption
Linux Kernel Preemption during spin_lock and mutex_lock

When a process in the kernel space is holding a spin_lock, the process cannot be preempted due to any …

locking linux-kernel preemption
How does a VxWorks scheduler get executed?

Would like to know how the scheduler gets called so that it can switch tasks. As in even if its …

vxworks scheduler preemption
What is the exact definition of 'process preemption'?

Wikipedia says: In computing, preemption is the act of temporarily interrupting a task being carried out by a computer system, …

operating-system cpu scheduling interrupt preemption
Why linux disables kernel preemption after the kernel code holds a spinlock?

I am new to Linux and am reading Linux device drivers book by Rubini & Corbet. I am confused at …

kernel driver spinlock preemption
SCHED_FIFO thread is preempted by SCHED_OTHER thread in Linux

I have written test program to test out SCHED_FIFO. I have learnt that SCHED_FIFO cannot be preempted by …

linux pthreads scheduler thread-priority preemption