From 4dac0b638310d2e92f6e19958b73d4c97c9734bb Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 14 May 2014 16:04:26 +0200 Subject: [PATCH] sched/cpupri: Replace NR_CPUS arrays Tejun reported that his resume was failing due to order-3 allocations from sched_domain building. Replace the NR_CPUS arrays in there with a dynamically allocated array. Reported-by: Tejun Heo Signed-off-by: Peter Zijlstra Cc: Johannes Weiner Cc: Steven Rostedt Cc: Linus Torvalds Link: http://lkml.kernel.org/n/tip-7cysnkw1gik45r864t1nkudh@git.kernel.org Signed-off-by: Ingo Molnar --- kernel/sched/cpupri.c | 7 +++++++ kernel/sched/cpupri.h | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/kernel/sched/cpupri.c b/kernel/sched/cpupri.c index 3031bac8aa3e..8834243abee2 100644 --- a/kernel/sched/cpupri.c +++ b/kernel/sched/cpupri.c @@ -30,6 +30,7 @@ #include #include #include +#include #include "cpupri.h" /* Convert between a 140 based task->prio, and our 102 based cpupri */ @@ -218,8 +219,13 @@ int cpupri_init(struct cpupri *cp) goto cleanup; } + cp->cpu_to_pri = kcalloc(nr_cpu_ids, sizeof(int), GFP_KERNEL); + if (!cp->cpu_to_pri) + goto cleanup; + for_each_possible_cpu(i) cp->cpu_to_pri[i] = CPUPRI_INVALID; + return 0; cleanup: @@ -236,6 +242,7 @@ void cpupri_cleanup(struct cpupri *cp) { int i; + kfree(cp->cpu_to_pri); for (i = 0; i < CPUPRI_NR_PRIORITIES; i++) free_cpumask_var(cp->pri_to_cpu[i].mask); } diff --git a/kernel/sched/cpupri.h b/kernel/sched/cpupri.h index f6d756173491..6b033347fdfd 100644 --- a/kernel/sched/cpupri.h +++ b/kernel/sched/cpupri.h @@ -17,7 +17,7 @@ struct cpupri_vec { struct cpupri { struct cpupri_vec pri_to_cpu[CPUPRI_NR_PRIORITIES]; - int cpu_to_pri[NR_CPUS]; + int *cpu_to_pri; }; #ifdef CONFIG_SMP