[PATCH 05/12] iwlwifi: pcie: optimise struct iwl_rx_mem_buffer layout
From: Luca Coelho <hidden>
Date: 2021-08-02 14:18:23
Subsystem:
intel wireless wifi link (iwlwifi), the rest · Maintainers:
Miri Korenblit, Linus Torvalds
From: Johannes Berg <redacted> 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 <redacted> Signed-off-by: Luca Coelho <redacted> --- drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 5 +++-- 1 file 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; }; /**
--
2.32.0