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Kernel Space: Ticket Spinlocks

Feb 14, 2008, 11:30 (0 Talkback[s])
(Other stories by Jonathan Corbet)

"Spinlocks are the lowest-level mutual exclusion mechanism in the Linux kernel. As such, they have a great deal of influence over the safety and performance of the kernel, so it is not surprising that a great deal of optimization effort has gone into the various (architecture-specific) spinlock implementations. That does not mean that all of the work has been done, though; a patch merged for 2.6.25 shows that there is always more which can be done.

"On the x86 architecture, in the 2.6.24 kernel, a spinlock is represented by an integer value..."

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