Messages in this thread | | | Date | Wed, 27 Jan 2021 12:27:03 +0100 | From | Michal Hocko <> | Subject | Re: [PATCH] procfs/dmabuf: Add /proc/<pid>/task/<tid>/dmabuf_fds |
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On Wed 27-01-21 12:01:55, Christian König wrote: [...] > Some years ago I've proposed an change to improve the OOM killer to take > into account how much memory is reference through special file descriptors > like device drivers or DMA-buf. > > But that never want anywhere because of concerns that this would add to much > overhead to the OOM killer.
I have to admit I do not remember such a discussion. There were many on the related topic, concerns were mostly about a proper accounting of shared resources or locking required to gain the information. I do not remember overhead as being the main concern as oom is a real cold path.
Anyway, if you want to revamp those patches then feel free to CC me and we can discuss further. I do not want to hijack this thread by an unrelated topic. -- Michal Hocko SUSE Labs
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