diff options
| author | Douglas Anderson <dianders@chromium.org> | 2016-01-29 05:19:58 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@kernel.org> | 2016-03-04 16:14:41 +0300 |
| commit | 74fc4a7558f859e89b849cc87afed38f517ded9a (patch) | |
| tree | af2db4a91021e7b499bd66cf811b4f410adaccba /drivers/usb/dwc2/hcd_intr.c | |
| parent | c9c8ac0150df2b75b25683cd3df3cb56877e4e52 (diff) | |
| download | linux-74fc4a7558f859e89b849cc87afed38f517ded9a.tar.xz | |
usb: dwc2: host: Add scheduler tracing
In preparation for future changes to the scheduler let's add some
tracing that makes it easy for us to see what's happening. By default
this tracing will be off.
By changing "core.h" you can easily trace to ftrace, the console, or
nowhere.
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb/dwc2/hcd_intr.c')
| -rw-r--r-- | drivers/usb/dwc2/hcd_intr.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index c4098431ba2f..1faf1c6410e1 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -138,13 +138,17 @@ static void dwc2_sof_intr(struct dwc2_hsotg *hsotg) while (qh_entry != &hsotg->periodic_sched_inactive) { qh = list_entry(qh_entry, struct dwc2_qh, qh_list_entry); qh_entry = qh_entry->next; - if (dwc2_frame_num_le(qh->sched_frame, hsotg->frame_number)) + if (dwc2_frame_num_le(qh->sched_frame, hsotg->frame_number)) { + dwc2_sch_vdbg(hsotg, "QH=%p ready fn=%04x, sch=%04x\n", + qh, hsotg->frame_number, qh->sched_frame); + /* * Move QH to the ready list to be executed next * (micro)frame */ list_move_tail(&qh->qh_list_entry, &hsotg->periodic_sched_ready); + } } tr_type = dwc2_hcd_select_transactions(hsotg); if (tr_type != DWC2_TRANSACTION_NONE) |