linux-kernel - [PATCH bpf-next v7 08/34] bpf: refine memcg-based memory accounting for arraymap maps

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Message-ID: <20201119173754.4125257-9-guro@fb.com>
Date:   Thu, 19 Nov 2020 09:37:28 -0800
From:   Roman Gushchin <guro@...com>
To:     <bpf@...r.kernel.org>
CC:     <ast@...nel.org>, <daniel@...earbox.net>, <netdev@...r.kernel.org>,
        <andrii@...nel.org>, <akpm@...ux-foundation.org>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <kernel-team@...com>
Subject: [PATCH bpf-next v7 08/34] bpf: refine memcg-based memory accounting for arraymap maps

Include percpu arrays and auxiliary data into the memcg-based memory
accounting.

Signed-off-by: Roman Gushchin <guro@...com>
Acked-by: Song Liu <songliubraving@...com>
---
 kernel/bpf/arraymap.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index c6c81eceb68f..92b650123c22 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -30,12 +30,12 @@ static void bpf_array_free_percpu(struct bpf_array *array)
 
 static int bpf_array_alloc_percpu(struct bpf_array *array)
 {
+	const gfp_t gfp = GFP_USER | __GFP_NOWARN | __GFP_ACCOUNT;
 	void __percpu *ptr;
 	int i;
 
 	for (i = 0; i < array->map.max_entries; i++) {
-		ptr = __alloc_percpu_gfp(array->elem_size, 8,
-					 GFP_USER | __GFP_NOWARN);
+		ptr = __alloc_percpu_gfp(array->elem_size, 8, gfp);
 		if (!ptr) {
 			bpf_array_free_percpu(array);
 			return -ENOMEM;
@@ -1018,7 +1018,7 @@ static struct bpf_map *prog_array_map_alloc(union bpf_attr *attr)
 	struct bpf_array_aux *aux;
 	struct bpf_map *map;
 
-	aux = kzalloc(sizeof(*aux), GFP_KERNEL);
+	aux = kzalloc(sizeof(*aux), GFP_KERNEL_ACCOUNT);
 	if (!aux)
 		return ERR_PTR(-ENOMEM);
 
-- 
2.26.2