On Tue, Jun 24, 2025 at 06:12:38AM +0000, Morten Brørup wrote: > When fast releasing mbufs, the mbufs are not accessed, so do not prefetch > them. > This saves a mbuf load operation for each fast released TX mbuf. > > When fast release of mbufs is enabled for a TX queue, cache the mbuf > mempool pointer in the TX queue structure. > This saves one mbuf load operation for each burst of fast released TX > mbufs. > > The txep->mbuf pointer is not used after the mbuf has been freed, so do > not reset the pointer. > This saves a txep store operation for each TX mbuf freed. > > Signed-off-by: Morten Brørup <m...@smartsharesystems.com> > --- > drivers/net/intel/common/tx.h | 5 +++ > .../i40e/i40e_recycle_mbufs_vec_common.c | 4 +- > drivers/net/intel/i40e/i40e_rxtx.c | 39 ++++++++++--------- > 3 files changed, 28 insertions(+), 20 deletions(-) > Thanks, Morten. This optimization probably applies other places in our drivers too. I'll look at this patch - and where else it can apply - for 25.11, since we are nearing the end of the 25.07 release cycle.
/Bruce
