4am Gmt 8 To Aest Spinlock
Anytime kernel code holds a spinlock preemption is disabled on the relevant processor Even uniprocessor system must disable the preemption in this way Rule 2 Disable interrupts on Spinlock include struct spinlock
4am Gmt 8 To Aest
4am Gmt 8 To Aest
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Spinlock is not a Linux feature it is a very simple CPU feature at least on most CPUs Spinlock doesn t prevent from context switching Disabling context switching would also In studying the spin lock synchronization mechanism i noticed that for each function there is also a corresponding macro for example for spin lock there is a function
spinlock RTOS task spinlock spinlock Spin lock irqsave disables interrupts on the local processor only before taking the spinlock the previous interrupt state is stored in flags If you are absolutely sure nothing
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A spinlock is a mutual exclusion mechanism not a semaphore a semaphore is a very specific kind of mutual exclusion But yes you re right in that it s by design a busy 2011 1
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Anytime kernel code holds a spinlock preemption is disabled on the relevant processor Even uniprocessor system must disable the preemption in this way Rule 2 Disable interrupts on
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4am Gmt 8 To Aest - Spin lock irqsave disables interrupts on the local processor only before taking the spinlock the previous interrupt state is stored in flags If you are absolutely sure nothing
