From 40c8e46832c7ea3bd3169cd56fe3b04f378be50e Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 30 Aug 2021 19:26:25 +0200 Subject: [PATCH 034/166] kcov: Allocate per-CPU memory on the relevant node. During boot kcov allocates per-CPU memory which is used later if remote/ softirq processing is enabled. Allocate the per-CPU memory on the CPU local node to avoid cross node memory access. Signed-off-by: Sebastian Andrzej Siewior Link: https://lore.kernel.org/r/20210830172627.267989-4-bigeasy@linutronix.de --- kernel/kcov.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) Index: linux-5.15.32-rt39/kernel/kcov.c =================================================================== --- linux-5.15.32-rt39.orig/kernel/kcov.c +++ linux-5.15.32-rt39/kernel/kcov.c @@ -1034,8 +1034,8 @@ static int __init kcov_init(void) int cpu; for_each_possible_cpu(cpu) { - void *area = vmalloc(CONFIG_KCOV_IRQ_AREA_SIZE * - sizeof(unsigned long)); + void *area = vmalloc_node(CONFIG_KCOV_IRQ_AREA_SIZE * + sizeof(unsigned long), cpu_to_node(cpu)); if (!area) return -ENOMEM; per_cpu_ptr(&kcov_percpu_data, cpu)->irq_area = area;