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| author | Jesse Brandeburg <[email protected]> | 2019-04-16 10:24:34 -0700 |
|---|---|---|
| committer | Jeff Kirsher <[email protected]> | 2019-05-23 10:51:54 -0700 |
| commit | 65124bbf980c6256e3385e7d002a5db102d30d3a (patch) | |
| tree | ad4ead87705a5235ae54b5b80b96f67551f5904c /drivers/net/ethernet/intel/ice/ice_switch.c | |
| parent | 55e062ba77adb68623dd57369900f25cb377cf94 (diff) | |
ice: Reorganize tx_buf and ring structs
Use more efficient structure ordering by using the pahole tool
and a lot of code inspection to get hot cache lines to have
packed data (no holes if possible) and adjacent warm data.
ice_ring prior to this change:
/* size: 192, cachelines: 3, members: 23 */
/* sum members: 158, holes: 4, sum holes: 12 */
/* padding: 22 */
ice_ring after this change:
/* size: 192, cachelines: 3, members: 25 */
/* sum members: 162, holes: 1, sum holes: 1 */
/* padding: 29 */
ice_tx_buf prior to this change:
/* size: 48, cachelines: 1, members: 7 */
/* sum members: 38, holes: 2, sum holes: 6 */
/* padding: 4 */
/* last cacheline: 48 bytes */
ice_tx_buf after this change:
/* size: 40, cachelines: 1, members: 7 */
/* sum members: 38, holes: 1, sum holes: 2 */
/* last cacheline: 40 bytes */
Signed-off-by: Jesse Brandeburg <[email protected]>
Signed-off-by: Anirudh Venkataramanan <[email protected]>
Tested-by: Andrew Bowers <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_switch.c')
0 files changed, 0 insertions, 0 deletions