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author | Li RongQing <lirongqing@baidu.com> | 2020-08-18 15:07:57 +0800 |
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committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2020-09-14 09:45:34 -0700 |
commit | 1fa5cef283420b3dad93cd6ab04d7125bc1562de (patch) | |
tree | 1c7286e4032a86334a4b14de7737c7c23bc08f13 /drivers/ata/ahci_imx.c | |
parent | f49be6dcd74bfb99b6f9deba4a976f74aad1e844 (diff) |
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
every time, 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.
Reported-by: kernel test robot <lkp@intel.com>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/ata/ahci_imx.c')
0 files changed, 0 insertions, 0 deletions