diff options
| author |   Xenia Ragiadakou <burzalodowa@gmail.com> | 2013-08-14 06:33:56 +0300 |
|---|---|---|
| committer |   Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2013-08-13 21:14:44 -0700 |
| commit | 68ffb01111500c769ceac055bdc2fb000322b2d7 (patch) | |
| tree | afe977ee95fc2cdf0248ffbe1722336a2ce3d398 /drivers/usb/host | |
| parent | xhci: trace debug messages related to driver initialization and unload (diff) | |
| download | linux-dev-68ffb01111500c769ceac055bdc2fb000322b2d7.tar.xz linux-dev-68ffb01111500c769ceac055bdc2fb000322b2d7.zip | |
xhci: trace debug statements related to ring expansion
This patch defines a new trace event, which is called xhci_dbg_ring_expansion
and belongs to the event class xhci_log_msg, and adds tracepoints that trace
the debug messages associated with the expansion of endpoint ring when there
is not enough space allocated to hold all pending TRBs.
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')
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 3 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 4 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-trace.h | 5 |
3 files changed, 9 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index ef27470b99e3..b150360d1e78 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -348,7 +348,8 @@ int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring, return -ENOMEM; xhci_link_rings(xhci, ring, first, last, num_segs); - xhci_dbg(xhci, "ring expansion succeed, now has %d segments\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, + "ring expansion succeed, now has %d segments", ring->num_segs); return 0; diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index f908e205f7d5..7b35af167e55 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2904,8 +2904,8 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring, return -ENOMEM; } - xhci_dbg(xhci, "ERROR no room on ep ring, " - "try ring expansion\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, + "ERROR no room on ep ring, try ring expansion"); num_trbs_needed = num_trbs - ep_ring->num_trbs_free; if (xhci_ring_expansion(xhci, ep_ring, num_trbs_needed, mem_flags)) { diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index 11025fe6ebba..20364cc8d2fb 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -62,6 +62,11 @@ DEFINE_EVENT(xhci_log_msg, xhci_dbg_init, TP_ARGS(vaf) ); +DEFINE_EVENT(xhci_log_msg, xhci_dbg_ring_expansion, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + DECLARE_EVENT_CLASS(xhci_log_ctx, TP_PROTO(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int ep_num), |