sched/cache: Track LLC-preferred tasks per runqueue

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For each runqueue, track the number of tasks with an LLC preference
and how many of them are running on their preferred LLC. This mirrors
nr_numa_running and nr_preferred_running for NUMA balancing, and will
be used by cache-aware load balancing in later patches.

Co-developed-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/459a37102f3d74a4e09ea58401d2094ac731d044.1775065312.git.tim.c.chen@linux.intel.com

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Tim Chen 2026-04-01 14:52:19 -07:00 • committed by Peter Zijlstra

parent 47d8696b95

commit 46afe3af7e

3 changed files with 57 additions and 3 deletions

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5

kernel/sched/core.c

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47

kernel/sched/fair.c

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8

kernel/sched/sched.h

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