Symmetric multiprocessing (SMP) involves multiple processors that share a common operating system and memory. In an SMP system, homogeneous processors run independently but have access to the same memory. SMP allows separate processes or threads to execute in parallel on different processors. The Linux 2.0 kernel was the first to support SMP hardware. It uses a single kernel spinlock to ensure that only one processor may execute kernel-mode code at a time to meet synchronization requirements.

1. Symmetric multiprocessing
BY: GURUKIRAN K S

2. What is SMP?
Symmertic Mulltiprocessing (SMP) is computer processing done by multiple
processors that share a common operating system and memory.
SMP systems are tightly coupled multiprocessor systems with a pool of
homogeneous processors running independently of each other.

4.  Linux 2.0 was the first Linux kernel to support SMP hardware;
separate processes or threads can execute in parallel on separate
processors processes or threads can execute in parallel on separate
processors
 To preserve the kernel’s nonpreemptible synchronization
requirements, SMP imposes the restriction, via a single kernel
spinlock, that only one processor at a time may execute kernel-
mode code

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