On Wed, Oct 23, 2024 at 1:08 PM Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote: > > Implement support for storing page allocation tag references directly > in the page flags instead of page extensions. sysctl.vm.mem_profiling > boot parameter it extended to provide a way for a user to request this > mode. Enabling compression eliminates memory overhead caused by page_ext > and results in better performance for page allocations. However this > mode will not work if the number of available page flag bits is > insufficient to address all kernel allocations. Such condition can > happen during boot or when loading a module. If this condition is > detected, memory allocation profiling gets disabled with an appropriate > warning. By default compression mode is disabled. > > Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx> Thank you very much Suren for doing this work. This is a very significant improvement for the fleet users. Reviewed-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
