mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-01-10 12:46:32 +01:00
262ef8e55b
1. the numa parameter was straight up ignored. 2. nothing was done to check if the to-be-cached/allocated stack matches the local node The id remains ignored on free in case of memoryless nodes. Note the current caching is already bad as the cache keeps overflowing and a different solution is needed for the long run, to be worked out(tm). Stats collected over a kernel build with the patch with the following topology: NUMA node(s): 2 NUMA node0 CPU(s): 0-11 NUMA node1 CPU(s): 12-23 caller's node vs stack backing pages on free: matching: 50083 (70%) mismatched: 21492 (30%) caching efficiency: cached: 32651 (65.2%) dropped: 17432 (34.8%) Link: https://lkml.kernel.org/r/20251120054015.3019419-1-mjguzik@gmail.com Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Linus Waleij <linus.walleij@linaro.org> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Kees Cook <kees@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>