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[bpf-next,v8,11/34] bpf: refine memcg-based memory accounting for devmap maps

Message ID 20201125030119.2864302-12-guro@fb.com (mailing list archive)
State Changes Requested
Delegated to: BPF
Headers show
Series bpf: switch to memcg-based memory accounting | expand

Checks

Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count fail Series longer than 15 patches
netdev/tree_selection success Clearly marked for bpf-next
netdev/subject_prefix success Link
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 1 this patch: 1
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 19 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 1 this patch: 1
netdev/header_inline success Link
netdev/stable success Stable not CCed

Commit Message

Roman Gushchin Nov. 25, 2020, 3 a.m. UTC
Include map metadata and the node size (struct bpf_dtab_netdev)
into the accounting.

Signed-off-by: Roman Gushchin <guro@fb.com>
---
 kernel/bpf/devmap.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
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Patch

diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 2b5ca93c17de..a4dfe544946f 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -175,7 +175,7 @@  static struct bpf_map *dev_map_alloc(union bpf_attr *attr)
 	if (!capable(CAP_NET_ADMIN))
 		return ERR_PTR(-EPERM);
 
-	dtab = kzalloc(sizeof(*dtab), GFP_USER);
+	dtab = kzalloc(sizeof(*dtab), GFP_USER | __GFP_ACCOUNT);
 	if (!dtab)
 		return ERR_PTR(-ENOMEM);
 
@@ -602,8 +602,9 @@  static struct bpf_dtab_netdev *__dev_map_alloc_node(struct net *net,
 	struct bpf_prog *prog = NULL;
 	struct bpf_dtab_netdev *dev;
 
-	dev = kmalloc_node(sizeof(*dev), GFP_ATOMIC | __GFP_NOWARN,
-			   dtab->map.numa_node);
+	dev = bpf_map_kmalloc_node(&dtab->map, sizeof(*dev),
+				   GFP_ATOMIC | __GFP_NOWARN | __GFP_ACCOUNT,
+				   dtab->map.numa_node);
 	if (!dev)
 		return ERR_PTR(-ENOMEM);