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| author | Xenia Ragiadakou <burzalodowa@gmail.com> | 2013-08-06 07:52:48 +0300 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2013-08-13 16:05:46 -0700 |
| commit | 63a23b9a7451660525c90b08219e14e701e294f1 (patch) | |
| tree | 7452bc6169dbb35906bfdcd7801b69d9ccc47c86 /drivers/usb/host/xhci-ring.c | |
| parent | 1d27fabec068a204186c6af10e05f23911c0c902 (diff) | |
| download | op-kernel-dev-63a23b9a7451660525c90b08219e14e701e294f1.zip op-kernel-dev-63a23b9a7451660525c90b08219e14e701e294f1.tar.gz | |
xhci: add xhci_cmd_completion trace event
This patch creates a new event class, called xhci_log_event,
and defines the xhci_cmd_completion trace event used for
tracing the commands issued to xHC that generate a completion
event in the event ring.
This info can be used, later, to print, in a human readable
way, the completion status and flags as well as the command's
type and fields using the trace-cmd tool and the appropriate
plugin.
Also, a tracepoint is added in handle_cmd_completion().
Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 3393ce7..86971ac 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1380,6 +1380,9 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, return; } + trace_xhci_cmd_completion(&xhci->cmd_ring->dequeue->generic, + (struct xhci_generic_trb *) event); + if ((GET_COMP_CODE(le32_to_cpu(event->status)) == COMP_CMD_ABORT) || (GET_COMP_CODE(le32_to_cpu(event->status)) == COMP_CMD_STOP)) { /* If the return value is 0, we think the trb pointed by |
