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From:   Roman Gushchin <guro@fb.com>
To:     <bpf@vger.kernel.org>
CC:     <ast@kernel.org>, <daniel@iogearbox.net>, <netdev@vger.kernel.org>,
        <andrii@kernel.org>, <akpm@linux-foundation.org>,
        <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
        <kernel-team@fb.com>
Subject: [PATCH bpf-next v8 14/34] bpf: memcg-based memory accounting for bpf ringbuffer
Date:   Tue, 24 Nov 2020 19:00:59 -0800
Message-ID: <20201125030119.2864302-15-guro@fb.com>
In-Reply-To: <20201125030119.2864302-1-guro@fb.com>
References: <20201125030119.2864302-1-guro@fb.com>
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Enable the memcg-based memory accounting for the memory used by
the bpf ringbuffer.

Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
---
 kernel/bpf/ringbuf.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/kernel/bpf/ringbuf.c b/kernel/bpf/ringbuf.c
index 31cb04a4dd2d..ee5f55d9276e 100644
--- a/kernel/bpf/ringbuf.c
+++ b/kernel/bpf/ringbuf.c
@@ -60,8 +60,8 @@ struct bpf_ringbuf_hdr {
=20
 static struct bpf_ringbuf *bpf_ringbuf_area_alloc(size_t data_sz, int nu=
ma_node)
 {
-	const gfp_t flags =3D GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN |
-			    __GFP_ZERO;
+	const gfp_t flags =3D GFP_KERNEL_ACCOUNT | __GFP_RETRY_MAYFAIL |
+			    __GFP_NOWARN | __GFP_ZERO;
 	int nr_meta_pages =3D RINGBUF_PGOFF + RINGBUF_POS_PAGES;
 	int nr_data_pages =3D data_sz >> PAGE_SHIFT;
 	int nr_pages =3D nr_meta_pages + nr_data_pages;
@@ -89,7 +89,8 @@ static struct bpf_ringbuf *bpf_ringbuf_area_alloc(size_=
t data_sz, int numa_node)
 	 */
 	array_size =3D (nr_meta_pages + 2 * nr_data_pages) * sizeof(*pages);
 	if (array_size > PAGE_SIZE)
-		pages =3D vmalloc_node(array_size, numa_node);
+		pages =3D __vmalloc_node(array_size, 1, GFP_KERNEL_ACCOUNT,
+				       numa_node, __builtin_return_address(0));
 	else
 		pages =3D kmalloc_node(array_size, flags, numa_node);
 	if (!pages)
@@ -167,7 +168,7 @@ static struct bpf_map *ringbuf_map_alloc(union bpf_at=
tr *attr)
 		return ERR_PTR(-E2BIG);
 #endif
=20
-	rb_map =3D kzalloc(sizeof(*rb_map), GFP_USER);
+	rb_map =3D kzalloc(sizeof(*rb_map), GFP_USER | __GFP_ACCOUNT);
 	if (!rb_map)
 		return ERR_PTR(-ENOMEM);
=20
--=20
2.26.2