Re: [PATCH bpf-next v2 29/35] bpf: libbpf: cleanup RLIMIT_MEMLOCK usage

On Mon, Jul 27, 2020 at 12:21 PM Roman Gushchin [off-list ref] wrote:

As bpf is not using memlock rlimit for memory accounting anymore,
let's remove the related code from libbpf.

Bpf operations can't fail because of exceeding the limit anymore.

They can't in the newest kernel, but libbpf will keep working and
supporting old kernels for a very long time now. So please don't
remove any of this.

But it would be nice to add a detection of whether kernel needs a
RLIMIT_MEMLOCK bump or not. Is there some simple and reliable way to
detect this from user-space?

Signed-off-by: Roman Gushchin <redacted>
---
 tools/lib/bpf/libbpf.c | 31 +------------------------------
 tools/lib/bpf/libbpf.h |  5 -----
 2 files changed, 1 insertion(+), 35 deletions(-)

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