diff options
Diffstat (limited to 'usb-usb.h-tweak-struct-urb-to-remove-wasted-space.patch')
| -rw-r--r-- | usb-usb.h-tweak-struct-urb-to-remove-wasted-space.patch | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/usb-usb.h-tweak-struct-urb-to-remove-wasted-space.patch b/usb-usb.h-tweak-struct-urb-to-remove-wasted-space.patch deleted file mode 100644 index 83641335d1f9b1..00000000000000 --- a/usb-usb.h-tweak-struct-urb-to-remove-wasted-space.patch +++ /dev/null @@ -1,35 +0,0 @@ -From cde8161f9ee466655588b66a106276044b2fc282 Mon Sep 17 00:00:00 2001 -From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -Date: Fri, 1 Mar 2019 18:13:27 +0100 -Subject: [PATCH] USB: usb.h: tweak struct urb to remove wasted space - -By moving one field around in 'struct urb' we reduce the size of the -structure by 8 bytes. - -Before the patch on x86_64 the overall size of the structure as reported -by pahole was: - /* size: 192, cachelines: 3, members: 30 */ - /* sum members: 184, holes: 2, sum holes: 8 */ -After the patch we now have: - /* size: 184, cachelines: 3, members: 30 */ - /* last cacheline: 56 bytes */ - -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - include/linux/usb.h | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - ---- a/include/linux/usb.h -+++ b/include/linux/usb.h -@@ -1545,10 +1545,10 @@ typedef void (*usb_complete_t)(struct ur - struct urb { - /* private: usb core and host controller only fields in the urb */ - struct kref kref; /* reference count of the URB */ -+ int unlinked; /* unlink error code */ - void *hcpriv; /* private data for host controller */ - atomic_t use_count; /* concurrent submissions counter */ - atomic_t reject; /* submissions will fail */ -- int unlinked; /* unlink error code */ - - /* public: documented fields in the urb that can be used by drivers */ - struct list_head urb_list; /* list head for use by the urb's |