BKL- BIG kernel lock + smp

[Valdis.Kletnieks at vt.edu]

On Mon, 12 Aug 2013 15:38:09 +0530, nidhi mittal hada said:

> I have an smp linux redhat kernel running on many cpu cores.
>
> I know that one process running on one of cpu has tried for Big kernel lock

Lock contention was one of the reasons why the BKL went away back in 2.6.39:

https://www.linux.com/learn/tutorials/447301:whats-new-in-linux-2639-ding-dong-the-big-kernel-lock-is-dead

Use a kernel that's less than 2 years old and you won't have that problem.

And if you're stuck with a kernel that's older than that, you can still fix
your locking to not use the BLK.
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