Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [2.6 PATCH] Exporting mmu_cr4_features again for i386 & x86_64 | Date | Thu, 29 Jun 2006 12:55:36 +0200 |
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On Thursday 29 June 2006 01:01, Milena Milenkovic wrote: > Hi all, > > The mmu_cr4_features variable was "unexported" in 2.6.12 kernel > (A patch submitted by Adrian Bunk, [2.6 patch] unexport mmu_cr4_features).
Normal policy is to unexport symbols that are not used in the core kernel.
However I think there is a deprecation policy with prior warning that might not have been followed here.
> However, this variable is needed if a loadable kernel module wants to > enable > access to performance counters from user space.
Ok I guess it's a reasonable request (although we will likely eventually add a standard API for this and then it might be removed again)
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