From 3a7fa5bef06e1757d1aded8d78afd041b4552e11 Mon Sep 17 00:00:00 2001 From: Xenia Ragiadakou Date: Wed, 31 Jul 2013 07:35:27 +0300 Subject: [PATCH] xhci: add trace for debug messages related to changing contexts This patch defines a new trace event, which is called xhci_dbg_context_change and belongs in the event class xhci_log_msg, and adds tracepoints for tracing the debug messages related to context updates performed with Configure Endpoint and Evaluate Context commands. Signed-off-by: Xenia Ragiadakou Signed-off-by: Sarah Sharp --- drivers/usb/host/xhci-mem.c | 4 +++- drivers/usb/host/xhci-ring.c | 4 +++- drivers/usb/host/xhci-trace.h | 5 +++++ drivers/usb/host/xhci.c | 24 ++++++++++++++++-------- 4 files changed, 27 insertions(+), 10 deletions(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index b881bc1697f9..b1bb59b58b25 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -26,6 +26,7 @@ #include #include "xhci.h" +#include "xhci-trace.h" /* * Allocates a generic ring segment from the ring pool, sets the dma address, @@ -661,7 +662,8 @@ void xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci, * fls(0) = 0, fls(0x1) = 1, fls(0x10) = 2, fls(0x100) = 3, etc. */ max_primary_streams = fls(stream_info->num_stream_ctxs) - 2; - xhci_dbg(xhci, "Setting number of stream ctx array entries to %u\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Setting number of stream ctx array entries to %u", 1 << (max_primary_streams + 1)); ep_ctx->ep_info &= cpu_to_le32(~EP_MAXPSTREAMS_MASK); ep_ctx->ep_info |= cpu_to_le32(EP_MAXPSTREAMS(max_primary_streams) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 5b08cd85f8e7..ba5fd5a8c9bc 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -67,6 +67,7 @@ #include #include #include "xhci.h" +#include "xhci-trace.h" static int handle_cmd_in_cmd_wait_list(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, @@ -1454,7 +1455,8 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, break; } bandwidth_change: - xhci_dbg(xhci, "Completed config ep cmd\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Completed config ep cmd"); xhci->devs[slot_id]->cmd_status = GET_COMP_CODE(le32_to_cpu(event->status)); complete(&xhci->devs[slot_id]->cmd_completion); diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index 432aa675966c..628624306f38 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -36,6 +36,11 @@ DEFINE_EVENT(xhci_log_msg, xhci_dbg_address, TP_ARGS(vaf) ); +DEFINE_EVENT(xhci_log_msg, xhci_dbg_context_change, + TP_PROTO(struct va_format *vaf), + TP_ARGS(vaf) +); + #endif /* __XHCI_TRACE_H */ /* this part must be outside header guard */ diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index d57dc6cbd428..fa7b6f43642f 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1153,12 +1153,16 @@ static int xhci_check_maxpacket(struct xhci_hcd *xhci, unsigned int slot_id, hw_max_packet_size = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2)); max_packet_size = usb_endpoint_maxp(&urb->dev->ep0.desc); if (hw_max_packet_size != max_packet_size) { - xhci_dbg(xhci, "Max Packet Size for ep 0 changed.\n"); - xhci_dbg(xhci, "Max packet size in usb_device = %d\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Max Packet Size for ep 0 changed."); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Max packet size in usb_device = %d", max_packet_size); - xhci_dbg(xhci, "Max packet size in xHCI HW = %d\n", + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Max packet size in xHCI HW = %d", hw_max_packet_size); - xhci_dbg(xhci, "Issuing evaluate context command.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Issuing evaluate context command."); /* Set up the input context flags for the command */ /* FIXME: This won't work if a non-default control endpoint @@ -1776,7 +1780,8 @@ static int xhci_configure_endpoint_result(struct xhci_hcd *xhci, ret = -ENODEV; break; case COMP_SUCCESS: - dev_dbg(&udev->dev, "Successful Endpoint Configure command\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Successful Endpoint Configure command"); ret = 0; break; default: @@ -1822,7 +1827,8 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci, ret = -EINVAL; break; case COMP_SUCCESS: - dev_dbg(&udev->dev, "Successful evaluate context command\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Successful evaluate context command"); ret = 0; break; default: @@ -2583,7 +2589,8 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, if ((xhci->quirks & XHCI_EP_LIMIT_QUIRK)) xhci_free_host_resources(xhci, ctrl_ctx); spin_unlock_irqrestore(&xhci->lock, flags); - xhci_dbg(xhci, "FIXME allocate a new ring segment\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "FIXME allocate a new ring segment"); return -ENOMEM; } xhci_ring_cmd_db(xhci); @@ -3865,7 +3872,8 @@ static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci, slot_ctx->dev_info2 &= cpu_to_le32(~((u32) MAX_EXIT)); slot_ctx->dev_info2 |= cpu_to_le32(max_exit_latency); - xhci_dbg(xhci, "Set up evaluate context for LPM MEL change.\n"); + xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, + "Set up evaluate context for LPM MEL change."); xhci_dbg(xhci, "Slot %u Input Context:\n", udev->slot_id); xhci_dbg_ctx(xhci, command->in_ctx, 0);