linux-kernel - [PATCH bpf-next v7 07/34] bpf: memcg-based memory accounting for bpf maps

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Message-ID: <20201119173754.4125257-8-guro@fb.com>
Date:   Thu, 19 Nov 2020 09:37:27 -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 07/34] bpf: memcg-based memory accounting for bpf maps

This patch enables memcg-based memory accounting for memory allocated
by __bpf_map_area_alloc(), which is used by many types of bpf maps for
large memory allocations.

Following patches in the series will refine the accounting for
some of the map types.

Signed-off-by: Roman Gushchin <guro@...com>
Acked-by: Song Liu <songliubraving@...com>
---
 kernel/bpf/syscall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 4154c616788c..4b514bb5cd70 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -281,7 +281,7 @@ static void *__bpf_map_area_alloc(u64 size, int numa_node, bool mmapable)
 	 * __GFP_RETRY_MAYFAIL to avoid such situations.
 	 */
 
-	const gfp_t gfp = __GFP_NOWARN | __GFP_ZERO;
+	const gfp_t gfp = __GFP_NOWARN | __GFP_ZERO | __GFP_ACCOUNT;
 	unsigned int flags = 0;
 	unsigned long align = 1;
 	void *area;
-- 
2.26.2