On Mon, Jan 19, 2026 at 5:08 AM Sumit Semwal <[email protected]> wrote: > > Hi T J, > > On Mon, 19 Jan 2026 at 15:15, Christian König <[email protected]> > wrote: > > > > On 1/16/26 20:05, T.J. Mercier wrote: > > > Commit bdb8d06dfefd ("dmabuf: Add the capability to expose DMA-BUF stats > > > in sysfs") added dmabuf statistics to sysfs in 2021 under > > > CONFIG_DMABUF_SYSFS_STATS. After being used in production, performance > > > problems were discovered leading to its deprecation in 2022 in commit > > > e0a9f1fe206a ("dma-buf: deprecate DMABUF_SYSFS_STATS"). Some of the > > > problems with this interface were discussed in my LPC 2025 talk. [1][2] > > > > > > Android was probably the last user of the interface, which has since > > > been migrated to use the dmabuf BPF iterator [3] to obtain the same > > > information more cheaply. As promised in that series, now that the > > > longterm stable 6.18 kernel has been released let's remove the sysfs > > > dmabuf statistics from the kernel. > > > > > > [1] https://www.youtube.com/watch?v=D83qygudq9c > > > [2] https://lpc.events/event/19/contributions/2118/ > > > [3] > > > https://lore.kernel.org/all/[email protected]/ > > > > > > Signed-off-by: T.J. Mercier <[email protected]> > > > > Oh yes please :) > > > > Reviewed-by: Christian König <[email protected]> > Thank you for your patch, LGTM :) > > If its not pushed yet, I'll push it tonight. > > Best, > Sumit
Thanks Sumit and Christian!
