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irq/Documentation: Correct result of echnoing 5 to smp_affinity

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This command:

  echo 5 > /proc/irq/10/smp_affinity

means only the first and third (not fourth) CPUs can handle irqs
That is, CPU0 is the first CPU and CPU2 is the third cpu

Signed-off-by: John Kacur <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
John Kacur 2016-06-17 15:05:15 +02:00 • committed by Ingo Molnar
commit 99e9d95872
1 changed files with 1 additions and 1 deletions
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Documentation/filesystems/proc.txt
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@ -725,7 +725,7 @@ IRQ, you can set it by doing:
> echo 1 > /proc/irq/10/smp_affinity
This means that only the first CPU will handle the IRQ, but you can also echo
5 which means that only the first and fourth CPU can handle the IRQ.
5 which means that only the first and third CPU can handle the IRQ.
The contents of each smp_affinity file is the same by default: