Re: [PATCH bpf-next v2 22/35] bpf: eliminate rlimit-based memory accounting for bpf ringbuffer
From: Andrii Nakryiko
Date: Tue Jul 28 2020 - 01:56:41 EST
On Mon, Jul 27, 2020 at 12:21 PM Roman Gushchin <guro@xxxxxx> wrote:
> Do not use rlimit-based memory accounting for bpf ringbuffer.
> It has been replaced with the memcg-based memory accounting.
> bpf_ringbuf_alloc() can't return anything except ERR_PTR(-ENOMEM)
> and a valid pointer, so to simplify the code make it return NULL
> in the first case. This allows to drop a couple of lines in
> ringbuf_map_alloc() and also makes it look similar to other memory
> allocating function like kmalloc().
> Signed-off-by: Roman Gushchin <guro@xxxxxx>
Acked-by: Andrii Nakryiko <andriin@xxxxxx>
> kernel/bpf/ringbuf.c | 24 ++++--------------------
> 1 file changed, 4 insertions(+), 20 deletions(-)