2020-07-27 19:21:50

by Roman Gushchin

Subject: [PATCH bpf-next v2 02/35] 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 most map types for
large allocations.

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

Signed-off-by: Roman Gushchin <[email protected]>
---
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 ee290b1f2d9e..501b2c071d7b 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -275,7 +275,7 @@ 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

2020-07-27 22:14:16

by Song Liu

Subject: Re: [PATCH bpf-next v2 02/35] bpf: memcg-based memory accounting for bpf maps

On Mon, Jul 27, 2020 at 12:23 PM Roman Gushchin <[email protected]> wrote:
>
> This patch enables memcg-based memory accounting for memory allocated
> by __bpf_map_area_alloc(), which is used by most map types for
> large allocations.
>
> Following patches in the series will refine the accounting for
> some map types.
>
> Signed-off-by: Roman Gushchin <[email protected]>

Acked-by: Song Liu <[email protected]>