BKL- BIG kernel lock + smp

Valdis.Kletnieks at vt.edu Valdis.Kletnieks at vt.edu
Mon Aug 12 10:46:18 EDT 2013

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:


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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