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On 05/22/2015 02:38 PM, Tom H wrote: |
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> On Fri, May 22, 2015 at 5:13 PM, walt <w41ter@×××××.com> wrote: |
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>> On 05/22/2015 06:32 AM, Mick wrote: |
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>>> |
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>>> Did you also enable CONFIG_MEMCG & MEMCG_KMEM in your kernel? |
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>> |
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>> When I use the search function in "make menuconfig" I don't see any mention |
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>> of MEMCG, so I suspect that particular config item must be enabled by some |
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>> other config option that I didn't enable (though I don't remember making |
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>> that decision one way or the other). |
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>> |
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>> I'm running gentoo-sources-3.14.42. |
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> |
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> You must've mistype your search: |
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> |
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> $ grep MEMCG init/Kconfig |
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> config MEMCG |
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> config MEMCG_SWAP |
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> depends on MEMCG && SWAP |
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> config MEMCG_SWAP_ENABLED |
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> depends on MEMCG_SWAP |
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> config MEMCG_KMEM |
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> depends on MEMCG |
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> recommended that the MEMCG and MEMCG_KMEM options also be |
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> |
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> The above was from 4.1.0-rc4 but AFAIK it's existed for 2 or 3 years |
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> so you should have it in 3.14. |
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Yes, I agree that MEMCG has been in the kernel source code for years. |
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I want to emphasize (for any future googlers) that the selection (or |
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de-selection) of kernel config options can change what you can find |
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or can't find when configuring kernel options in "make menuconfig". |
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This is important, and I want to drill this concept home in your |
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(collective) brains. Configuring the linux kernel is *not* simple. |
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The kernel devs have been struggling with this idea for years, and |
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I am certainly no smarter than they are. |
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Please, just understand that the kernel config scripts are fallible, |
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just like the people who write them. |
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