From 005f874dd2843116e2ea079e3679f4f318f12fee Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 26 Apr 2017 17:35:35 +0200 Subject: sched/topology: Add sched_group_capacity debugging Add sgc::id to easier spot domain construction issues. Take the opportunity to slightly rework the group printing, because adding more "(id: %d)" strings makes the entire thing very hard to read. Also the individual groups are very hard to separate, so add explicit visual grouping, which allows replacing all the "(%s: %d)" format things with shorter "%s=%d" variants. Then fix up some inconsistencies in surrounding prints for domains. The end result looks like: [] CPU0 attaching sched-domain(s): [] domain-0: span=0,4 level=DIE [] groups: 0:{ span=0 }, 4:{ span=4 } [] domain-1: span=0-1,3-5,7 level=NUMA [] groups: 0:{ span=0,4 mask=0,4 cap=2048 }, 1:{ span=1,5 mask=1,5 cap=2048 }, 3:{ span=3,7 mask=3,7 cap=2048 } [] domain-2: span=0-7 level=NUMA [] groups: 0:{ span=0-1,3-5,7 mask=0,4 cap=6144 }, 2:{ span=1-3,5-7 mask=2,6 cap=6144 } Signed-off-by: Peter Zijlstra (Intel) Cc: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar --- kernel/sched/sched.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'kernel/sched/sched.h') diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 6e1eae7..4312b2a 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -1023,6 +1023,10 @@ struct sched_group_capacity { unsigned long next_update; int imbalance; /* XXX unrelated to capacity but shared group state */ +#ifdef CONFIG_SCHED_DEBUG + int id; +#endif + unsigned long cpumask[0]; /* iteration mask */ }; -- cgit v1.1