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authorSarah Sharp <sarah.a.sharp@intel.com>2007-10-03 14:56:03 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:55:30 -0700
commit4d59d8a11383ebf0e0260ee481a4e766959fd7d9 (patch)
tree240cf81cc56896a69c1467b7c8bc4f3f4022c3fd /include
parent437f375f262417b484f28007c3e8d21bd01d0e01 (diff)
USB: Export URB statistics for powertop
powertop currently tracks interrupts generated by uhci, ehci, and ohci, but it has no way of telling which USB device to blame USB bus activity on. This patch exports the number of URBs that are submitted for a given device. Cat the file 'urbnum' in /sys/bus/usb/devices/.../ Signed-off-by: Sarah Sharp <sarah.a.sharp@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/usb.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index e5b35e0dca2..c10935fdc03 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -415,6 +415,7 @@ struct usb_device {
int pm_usage_cnt; /* usage counter for autosuspend */
u32 quirks; /* quirks of the whole device */
+ atomic_t urbnum; /* number of URBs submitted for the whole device */
#ifdef CONFIG_PM
struct delayed_work autosuspend; /* for delayed autosuspends */