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Content-Language: en-US From: Vlastimil Babka To: lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org, bpf References: Autocrypt: addr=vbabka@suse.cz; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSBWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBzdXNlLmN6PsLBlAQTAQoAPgIbAwULCQgHAwUVCgkICwUWAgMBAAIe AQIXgBYhBKlA1DSZLC6OmRA9UCJPp+fMgqZkBQJkBREIBQkRadznAAoJECJPp+fMgqZkNxIQ ALZRqwdUGzqL2aeSavbum/VF/+td+nZfuH0xeWiO2w8mG0+nPd5j9ujYeHcUP1edE7uQrjOC Gs9sm8+W1xYnbClMJTsXiAV88D2btFUdU1mCXURAL9wWZ8Jsmz5ZH2V6AUszvNezsS/VIT87 AmTtj31TLDGwdxaZTSYLwAOOOtyqafOEq+gJB30RxTRE3h3G1zpO7OM9K6ysLdAlwAGYWgJJ V4JqGsQ/lyEtxxFpUCjb5Pztp7cQxhlkil0oBYHkudiG8j1U3DG8iC6rnB4yJaLphKx57NuQ PIY0Bccg+r9gIQ4XeSK2PQhdXdy3UWBr913ZQ9AI2usid3s5vabo4iBvpJNFLgUmxFnr73SJ KsRh/2OBsg1XXF/wRQGBO9vRuJUAbnaIVcmGOUogdBVS9Sun/Sy4GNA++KtFZK95U7J417/J Hub2xV6Ehc7UGW6fIvIQmzJ3zaTEfuriU1P8ayfddrAgZb25JnOW7L1zdYL8rXiezOyYZ8Fm ZyXjzWdO0RpxcUEp6GsJr11Bc4F3aae9OZtwtLL/jxc7y6pUugB00PodgnQ6CMcfR/HjXlae h2VS3zl9+tQWHu6s1R58t5BuMS2FNA58wU/IazImc/ZQA+slDBfhRDGYlExjg19UXWe/gMcl De3P1kxYPgZdGE2eZpRLIbt+rYnqQKy8UxlszsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZAUSmwUJDK5EZgAKCRAiT6fnzIKmZOJGEACOKABgo9wJXsbWhGWYO7mD 8R8mUyJHqbvaz+yTLnvRwfe/VwafFfDMx5GYVYzMY9TWpA8psFTKTUIIQmx2scYsRBUwm5VI EurRWKqENcDRjyo+ol59j0FViYysjQQeobXBDDE31t5SBg++veI6tXfpco/UiKEsDswL1WAr tEAZaruo7254TyH+gydURl2wJuzo/aZ7Y7PpqaODbYv727Dvm5eX64HCyyAH0s6sOCyGF5/p eIhrOn24oBf67KtdAN3H9JoFNUVTYJc1VJU3R1JtVdgwEdr+NEciEfYl0O19VpLE/PZxP4wX PWnhf5WjdoNI1Xec+RcJ5p/pSel0jnvBX8L2cmniYnmI883NhtGZsEWj++wyKiS4NranDFlA HdDM3b4lUth1pTtABKQ1YuTvehj7EfoWD3bv9kuGZGPrAeFNiHPdOT7DaXKeHpW9homgtBxj 8aX/UkSvEGJKUEbFL9cVa5tzyialGkSiZJNkWgeHe+jEcfRT6pJZOJidSCdzvJpbdJmm+eED w9XOLH1IIWh7RURU7G1iOfEfmImFeC3cbbS73LQEFGe1urxvIH5K/7vX+FkNcr9ujwWuPE9b 1C2o4i/yZPLXIVy387EjA6GZMqvQUFuSTs/GeBcv0NjIQi8867H3uLjz+mQy63fAitsDwLmR EP+ylKVEKb0Q2A== In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 73DEA40012 X-Stat-Signature: r6ee9hnqbahw5xhpjx7rkakwghai4azn X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1716238361-786756 X-HE-Meta: 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 1pj9KoAO tGspqoRWdvSazx0K5XvSiBu5zZaMKpAP9+ihZsIKUgBYTaefXg2Gdb4ciPq2tkUFMmezsgpamEMtrGYwRs+rYMZzJnuNe7yvfBIaaMkq9T7Lp3iJW2KQB8J+ppf7sVVE27WnpTb8X6uKnwBXfUWUipn9Ch0yxc0736fAHJ8henv+U9yUDze5ecVwCKUdAc2UiHr+DuGYQaNTFPvxS8+UXZlH68niedUdx4QY+mU1Qx6Oe3aiQPRLLUlSGd7GfHJdEx3t3qgEDIy1WSk66m/Y9FYGpMGvBUM6W3o1Z67wA6S8Z21mf5C2nYSlLGz5UWnEYDY65ZDNdtI2PU44= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 4/30/24 5:42 PM, Vlastimil Babka wrote: > Hi, > > I'd like to propose a session about the next steps for SLUB. This is > different from the BOF about sheaves that Matthew suggested, which would be > not suitable for the whole group due to being not fleshed out enough yet. > But the session could be scheduled after the BOF so if we do brainstorm > something promising there, the result could be discussed as part of the full > session. Since I've been asked if the slides could be shared, here goes: https://drive.google.com/file/d/1fHozm2y97Biceh19e_aL5PrHLAZFntZW/view > Aside from that my preliminary plan is to discuss: > > - what was made possible by reducing the slab allocators implementations to > a single one, and what else could be done now with a single implementation > > - the work-in-progress work (for now in the context of maple tree) on SLUB > per-cpu array caches and preallocation > > - what functionality would SLUB need to gain so the extra caching done by > bpf allocator on top wouldn't be necessary? (kernel/bpf/memalloc.c) > > - similar wrt lib/objpool.c (did you even noticed it was added? :) > > - maybe the mempool functionality could be better integrated as well? > > - are there more cases where people have invented layers outside mm and that > could be integrated with some effort? IIRC io_uring also has some caching on > top currently... > > - better/more efficient memcg integration? > > - any other features people would like SLUB to have? > > Thanks, > Vlastimil