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| author | Lorenz Bauer <lmb@cloudflare.com> | 2021-04-29 14:46:56 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-04 12:47:56 +0200 |
| commit | 8595837e9df51e5f5af78d748bc16ce5dec10edd (patch) | |
| tree | 0afa5e7f526b2cee39098c6dc5228a4e78edad26 /scripts/bpf_helpers_doc.py | |
| parent | 738ab7d5e554c9edba38344bdc8ffd03040a4f41 (diff) | |
bpf: verifier: Allocate idmap scratch in verifier env
commit c9e73e3d2b1eb1ea7ff068e05007eec3bd8ef1c9 upstream.
func_states_equal makes a very short lived allocation for idmap,
probably because it's too large to fit on the stack. However the
function is called quite often, leading to a lot of alloc / free
churn. Replace the temporary allocation with dedicated scratch
space in struct bpf_verifier_env.
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://lore.kernel.org/bpf/20210429134656.122225-4-lmb@cloudflare.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions