> -----Original Message----- > From: Li RongQing <[email protected]> > Sent: Friday, July 31, 2020 3:38 AM > To: [email protected]; [email protected]; > [email protected]; Bowers, AndrewX <[email protected]>; > Nguyen, Anthony L <[email protected]> > Subject: [PATCH][v2] i40e: optimise prefetch page refcount > > refcount of rx_buffer page will be added here originally, so prefetchw is > needed, but after commit 1793668c3b8c ("i40e/i40evf: Update code to > better handle incrementing page count"), and refcount is not added > everytime, so change prefetchw as prefetch, > > now it mainly services page_address(), but which accesses struct page only > when WANT_PAGE_VIRTUAL or HASHED_PAGE_VIRTUAL is defined > otherwise it returns address based on offset, so we prefetch it conditionally > > Jakub suggested to define prefetch_page_address in a common header > > Suggested-by: Jakub Kicinski <[email protected]> > Signed-off-by: Li RongQing <[email protected]> > --- > diff with v1: create a common function prefetch_page_address > > drivers/net/ethernet/intel/i40e/i40e_txrx.c | 2 +- > include/linux/prefetch.h | 7 +++++++ > 2 files changed, 8 insertions(+), 1 deletion(-)
Tested-by: Andrew Bowers <[email protected]>
