From: Paolo Abeni <pab...@redhat.com> Date: Wed, 12 Jun 2019 12:18:34 +0200
> The mlx5_core driver uses several indirect calls in fast-path, some of them > are invoked on each ingress packet, even for the XDP-only traffic. > > This series leverage the indirect call wrappers infrastructure the avoid > the expansive RETPOLINE overhead for 2 indirect calls in fast-path. > > Each call is addressed on a different patch, plus we need to introduce a > couple > of additional helpers to cope with the higher number of possible direct-call > alternatives. > > v2 -> v3: > - do not add more INDIRECT_CALL_* macros > - use only the direct calls always available regardless of > the mlx5 build options in the last patch > > v1 -> v2: > - update the direct call list and use a macro to define it, > as per Saeed suggestion. An intermediated additional > macro is needed to allow arg list expansion > - patch 2/3 is unchanged, as the generated code looks better this way than > with possible alternative (dropping BP hits) Applied, thanks.
