6.6-stable review patch. If anyone has any objections, please let me know.
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From: Maciej Fijalkowski maciej.fijalkowski@intel.com
[ Upstream commit 50b2143356e888777fc5bca023c39f34f404613a ]
Architectures that have PAGE_SIZE >= 8192 such as arm64 should act the same as x86 currently, meaning reuse of a page should only take place when no one else is busy with it.
Do two things independently of underlying PAGE_SIZE: - store the page count under ice_rx_buf::pgcnt - then act upon its value vs ice_rx_buf::pagecnt_bias when making the decision regarding page reuse
Fixes: 2b245cb29421 ("ice: Implement transmit and NAPI support") Signed-off-by: Maciej Fijalkowski maciej.fijalkowski@intel.com Tested-by: Chandan Kumar Rout chandanx.rout@intel.com (A Contingent Worker at Intel) Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/ice/ice_txrx.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c index 49b1fa9651161..8e53195df2b1c 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c @@ -834,16 +834,15 @@ ice_can_reuse_rx_page(struct ice_rx_buf *rx_buf) if (!dev_page_is_reusable(page)) return false;
-#if (PAGE_SIZE < 8192) /* if we are only owner of page we can reuse it */ if (unlikely(rx_buf->pgcnt - pagecnt_bias > 1)) return false; -#else +#if (PAGE_SIZE >= 8192) #define ICE_LAST_OFFSET \ (SKB_WITH_OVERHEAD(PAGE_SIZE) - ICE_RXBUF_2048) if (rx_buf->page_offset > ICE_LAST_OFFSET) return false; -#endif /* PAGE_SIZE < 8192) */ +#endif /* PAGE_SIZE >= 8192) */
/* If we have drained the page fragment pool we need to update * the pagecnt_bias and page count so that we fully restock the @@ -946,12 +945,7 @@ ice_get_rx_buf(struct ice_rx_ring *rx_ring, const unsigned int size, struct ice_rx_buf *rx_buf;
rx_buf = &rx_ring->rx_buf[ntc]; - rx_buf->pgcnt = -#if (PAGE_SIZE < 8192) - page_count(rx_buf->page); -#else - 0; -#endif + rx_buf->pgcnt = page_count(rx_buf->page); prefetchw(rx_buf->page);
if (!size)