Messages in this thread Patch in this message | | | From | Sebastian Andrzej Siewior <> | Subject | [PATCH v2 3/5] kcov: Allocate per-CPU memory on the relevant node. | Date | Thu, 23 Sep 2021 18:47:39 +0200 |
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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 <bigeasy@linutronix.de> Acked-by: Dmitry Vyukov <dvyukov@google.com> Acked-by: Marco Elver <elver@google.com> Tested-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/20210830172627.267989-4-bigeasy@linutronix.de --- kernel/kcov.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/kcov.c b/kernel/kcov.c index 80bfe71bbe13e..4f910231d99a2 100644 --- a/kernel/kcov.c +++ b/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; -- 2.33.0
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