diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2021-08-02 17:09:37 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2021-08-26 23:32:20 +0300 |
| commit | 95fe8d89bb8c9c114ca3e46f8b2457f894f55746 (patch) | |
| tree | 13a523b675e98f5f5ef6afa8d31899ad344d630a /drivers/net/wireless/intel/iwlwifi/pcie | |
| parent | 2f308f008f1ccda4dcf9816c7dad0a33fbffdd18 (diff) | |
iwlwifi: pcie: optimise struct iwl_rx_mem_buffer layout
On 64-bit machines, struct iwl_rx_mem_buffer has a lot of
padding due to the use of pointers after the small items.
Move the list entry before them, and while at it also add
documentation for it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802170640.6a62255b3df0.I47bb36530a3c2cdbd73454c796ce608ee2a32a6c@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h index cc550f6ef957..10d763fc3d50 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h @@ -42,6 +42,7 @@ struct iwl_host_cmd; * struct iwl_rx_mem_buffer * @page_dma: bus address of rxb page * @page: driver's pointer to the rxb page + * @list: list entry for the membuffer * @invalid: rxb is in driver ownership - not owned by HW * @vid: index of this rxb in the global table * @offset: indicates which offset of the page (in bytes) @@ -50,10 +51,10 @@ struct iwl_host_cmd; struct iwl_rx_mem_buffer { dma_addr_t page_dma; struct page *page; - u16 vid; - bool invalid; struct list_head list; u32 offset; + u16 vid; + bool invalid; }; /** |