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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2021-11-08 18:35:34 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-09 10:02:52 -0800 |
| commit | 741ddd4519c4d21eb7313e89a2c4ccc44a3dd6b9 (patch) | |
| tree | 12c90b49d2ef7b66f1f14b94af4668dacce79ebc /kernel | |
| parent | Documentation/kcov: define `ip' in the example (diff) | |
| download | linux-dev-741ddd4519c4d21eb7313e89a2c4ccc44a3dd6b9.tar.xz linux-dev-741ddd4519c4d21eb7313e89a2c4ccc44a3dd6b9.zip | |
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.
Link: https://lkml.kernel.org/r/20210923164741.1859522-4-bigeasy@linutronix.de
Link: https://lore.kernel.org/r/20210830172627.267989-4-bigeasy@linutronix.de
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>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/kcov.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/kcov.c b/kernel/kcov.c index 80bfe71bbe13..4f910231d99a 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; |