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I am not familiar with how patches flow from this repo/branch but I expect that this inclusion will require some high level coordination between the big repos since resctrl changes usually flow upstream through x86/cache branch of tip and I anticipate some conflicts and also needing to figure out how to deal with this new dependency in planned resctrl changes. As Tony mentioned upcoming resctrl changes depend on this new include/linux/cacheinfo.h addition while some other planned resctrl changes [2] will conflict with patch #2 and #3 of this series. A previous change to include/linux/cacheinfo.h (commit 709c4362725a ("cacheinfo: Move resctrl's get_cache_id() to the cacheinfo header file")) was able to accompany the resctrl changes via x86/cache of tip. Could it be possible to repeat such a patch flow? Looking at mm-nonmm-unstable there is indeed one other pending change that touches include/linux/cacheinfo.h ("cpumask: make core headers including cpumask_types.h where possible"). I confirmed that there is no conflict between it and patch #1 from this series, the two can be applied in any order. Of course, this means nothing for any other changes to this file that may arrive later during this cycle. Could you please provide your guidance on how to achieve a smooth upstream of this work? Thank you Reinette [2] https://lore.kernel.org/lkml/20240321165106.31602-1-james.morse@arm.com/ > This helper function came up in discussion of the resctrl patches > for Sub-NUMA Cluster (SNC) support. Reinette pointed out[1] that there > are already two places where it would clean things up by avoiding > open coding. The SNC patches will add two additional call sites. > > So rather than have this jammed up as part of the SNC series, I'm > posting it as a simple standalone cleanup. > > Signed-off-by: Tony Luck > > [1] https://lore.kernel.org/all/050c64b3-20b3-4db6-b782-f5124ebaab31@intel.com/ > > Tony Luck (3): > cacheinfo: Add function to get cacheinfo for a given (cpu, cachelevel) > x86/resctrl: Replace open code cacheinfo search in > pseudo_lock_region_init() > x86/resctrl: Replace open code cacheinfo search in > rdtgroup_cbm_to_size() > > include/linux/cacheinfo.h | 21 ++++++++++++++++----- > arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 17 ++++++----------- > arch/x86/kernel/cpu/resctrl/rdtgroup.c | 14 +++++--------- > 3 files changed, 27 insertions(+), 25 deletions(-) > > > base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0