From: Douglas Anderson <dianders@chromium.org> To: John Youn <John.Youn@synopsys.com>, balbi@ti.com, kever.yang@rock-chips.com Cc: "Heiko Stübner" <heiko@sntech.de>, linux-rockchip@lists.infradead.org, "Julius Werner" <jwerner@chromium.org>, gregory.herrero@intel.com, yousaf.kaukab@intel.com, dinguyen@opensource.altera.com, stern@rowland.harvard.edu, ming.lei@canonical.com, "Douglas Anderson" <dianders@chromium.org>, johnyoun@synopsys.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 15/21] usb: dwc2: host: Add scheduler logging for missed SOFs Date: Wed, 20 Jan 2016 21:04:26 -0800 [thread overview] Message-ID: <1453352672-27890-16-git-send-email-dianders@chromium.org> (raw) In-Reply-To: <1453352672-27890-1-git-send-email-dianders@chromium.org> We'll use the new "scheduler verbose debugging" macro to log missed SOFs. This is fast enough (assuming you configure it to use the ftrace buffer) that we can do it without worrying about the speed hit. The overhead hit if the scheduler tracing is set to "no_printk" should be near zero. Signed-off-by: Douglas Anderson <dianders@chromium.org> --- Changes in v4: - Add scheduler logging for missed SOFs new for v4. Changes in v3: None Changes in v2: None drivers/usb/dwc2/core.h | 3 ++- drivers/usb/dwc2/hcd.c | 2 +- drivers/usb/dwc2/hcd_intr.c | 12 ++++++++---- 3 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 18f9e4045643..64d45a2053bb 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -809,9 +809,10 @@ struct dwc2_hsotg { bool bus_suspended; bool new_connection; + u16 last_frame_num; + #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS #define FRAME_NUM_ARRAY_SIZE 1000 - u16 last_frame_num; u16 *frame_num_array; u16 *last_frame_num_array; int frame_num_idx; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 350453999bad..32c160e3e13e 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -3077,8 +3077,8 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq) FRAME_NUM_ARRAY_SIZE, GFP_KERNEL); if (!hsotg->last_frame_num_array) goto error1; - hsotg->last_frame_num = HFNUM_MAX_FRNUM; #endif + hsotg->last_frame_num = HFNUM_MAX_FRNUM; /* Check if the bus driver or platform code has setup a dma_mask */ if (hsotg->core_params->dma_enable > 0 && diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index b54a0c41d34f..1875e4590a3c 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -55,12 +55,16 @@ /* This function is for debug only */ static void dwc2_track_missed_sofs(struct dwc2_hsotg *hsotg) { -#ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS u16 curr_frame_number = hsotg->frame_number; + u16 expected = dwc2_frame_num_inc(hsotg->last_frame_num, 1); + + if (expected != curr_frame_number) + dwc2_sch_vdbg(hsotg, "MISSED SOF %04x != %04x\n", + expected, curr_frame_number); +#ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS if (hsotg->frame_num_idx < FRAME_NUM_ARRAY_SIZE) { - if (((hsotg->last_frame_num + 1) & HFNUM_MAX_FRNUM) != - curr_frame_number) { + if (expected != curr_frame_number) { hsotg->frame_num_array[hsotg->frame_num_idx] = curr_frame_number; hsotg->last_frame_num_array[hsotg->frame_num_idx] = @@ -79,8 +83,8 @@ static void dwc2_track_missed_sofs(struct dwc2_hsotg *hsotg) } hsotg->dumped_frame_num_array = 1; } - hsotg->last_frame_num = curr_frame_number; #endif + hsotg->last_frame_num = curr_frame_number; } static void dwc2_hc_handle_tt_clear(struct dwc2_hsotg *hsotg, -- 2.7.0.rc3.207.g0ac5344
WARNING: multiple messages have this Message-ID (diff)
From: Douglas Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> To: John Youn <John.Youn-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>, balbi-l0cyMroinI0@public.gmane.org, kever.yang-TNX95d0MmH7DzftRWevZcw@public.gmane.org Cc: gregory.herrero-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, "Heiko Stübner" <heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>, johnyoun-HKixBCOQz3hWk0Htik3J/w@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "Douglas Anderson" <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, yousaf.kaukab-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz@public.gmane.org, "Julius Werner" <jwerner-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>, dinguyen-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org Subject: [PATCH v4 15/21] usb: dwc2: host: Add scheduler logging for missed SOFs Date: Wed, 20 Jan 2016 21:04:26 -0800 [thread overview] Message-ID: <1453352672-27890-16-git-send-email-dianders@chromium.org> (raw) In-Reply-To: <1453352672-27890-1-git-send-email-dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> We'll use the new "scheduler verbose debugging" macro to log missed SOFs. This is fast enough (assuming you configure it to use the ftrace buffer) that we can do it without worrying about the speed hit. The overhead hit if the scheduler tracing is set to "no_printk" should be near zero. Signed-off-by: Douglas Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> --- Changes in v4: - Add scheduler logging for missed SOFs new for v4. Changes in v3: None Changes in v2: None drivers/usb/dwc2/core.h | 3 ++- drivers/usb/dwc2/hcd.c | 2 +- drivers/usb/dwc2/hcd_intr.c | 12 ++++++++---- 3 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 18f9e4045643..64d45a2053bb 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -809,9 +809,10 @@ struct dwc2_hsotg { bool bus_suspended; bool new_connection; + u16 last_frame_num; + #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS #define FRAME_NUM_ARRAY_SIZE 1000 - u16 last_frame_num; u16 *frame_num_array; u16 *last_frame_num_array; int frame_num_idx; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 350453999bad..32c160e3e13e 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -3077,8 +3077,8 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq) FRAME_NUM_ARRAY_SIZE, GFP_KERNEL); if (!hsotg->last_frame_num_array) goto error1; - hsotg->last_frame_num = HFNUM_MAX_FRNUM; #endif + hsotg->last_frame_num = HFNUM_MAX_FRNUM; /* Check if the bus driver or platform code has setup a dma_mask */ if (hsotg->core_params->dma_enable > 0 && diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index b54a0c41d34f..1875e4590a3c 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -55,12 +55,16 @@ /* This function is for debug only */ static void dwc2_track_missed_sofs(struct dwc2_hsotg *hsotg) { -#ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS u16 curr_frame_number = hsotg->frame_number; + u16 expected = dwc2_frame_num_inc(hsotg->last_frame_num, 1); + + if (expected != curr_frame_number) + dwc2_sch_vdbg(hsotg, "MISSED SOF %04x != %04x\n", + expected, curr_frame_number); +#ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS if (hsotg->frame_num_idx < FRAME_NUM_ARRAY_SIZE) { - if (((hsotg->last_frame_num + 1) & HFNUM_MAX_FRNUM) != - curr_frame_number) { + if (expected != curr_frame_number) { hsotg->frame_num_array[hsotg->frame_num_idx] = curr_frame_number; hsotg->last_frame_num_array[hsotg->frame_num_idx] = @@ -79,8 +83,8 @@ static void dwc2_track_missed_sofs(struct dwc2_hsotg *hsotg) } hsotg->dumped_frame_num_array = 1; } - hsotg->last_frame_num = curr_frame_number; #endif + hsotg->last_frame_num = curr_frame_number; } static void dwc2_hc_handle_tt_clear(struct dwc2_hsotg *hsotg, -- 2.7.0.rc3.207.g0ac5344
next prev parent reply other threads:[~2016-01-21 5:07 UTC|newest] Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-01-21 5:04 [PATCH v4 0/21] usb: dwc2: host: Fix and speed up all the stuff, especially with splits Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 01/21] usb: dwc2: rockchip: Make the max_transfer_size automatic Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 02/21] usb: dwc2: host: Get aligned DMA in a more supported way Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 03/21] usb: dwc2: host: Set host_rx_fifo_size to 528 for rk3066 Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 04/21] usb: dwc2: host: Set host_perio_tx_fifo_size to 304 " Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 05/21] usb: dwc2: host: Avoid use of chan->qh after qh freed Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 06/21] usb: dwc2: host: Always add to the tail of queues Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 07/21] usb: dwc2: hcd: fix split transfer schedule sequence Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:24 ` kbuild test robot 2016-01-21 5:24 ` kbuild test robot 2016-01-22 0:24 ` Doug Anderson 2016-01-21 5:04 ` [PATCH v4 08/21] usb: dwc2: host: Add scheduler tracing Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 09/21] usb: dwc2: host: Add a delay before releasing periodic bandwidth Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 10/21] usb: dwc2: host: Giveback URB in tasklet context Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 11/21] usb: dwc2: host: Use periodic interrupt even with DMA Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 12/21] usb: dwc2: host: Rename some fields in struct dwc2_qh Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 13/21] usb: dwc2: host: Reorder things in hcd_queue.c Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 14/21] usb: dwc2: host: Split code out to make dwc2_do_reserve() Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson [this message] 2016-01-21 5:04 ` [PATCH v4 15/21] usb: dwc2: host: Add scheduler logging for missed SOFs Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 16/21] usb: dwc2: host: Manage frame nums better in scheduler Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 17/21] usb: dwc2: host: Schedule periodic right away if it's time Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 18/21] usb: dwc2: host: Add dwc2_hcd_get_future_frame_number() call Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 19/21] usb: dwc2: host: Properly set even/odd frame Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:04 ` [PATCH v4 20/21] usb: dwc2: host: Totally redo the microframe scheduler Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson 2016-01-21 5:49 ` kbuild test robot 2016-01-21 5:49 ` kbuild test robot 2016-01-21 5:04 ` [PATCH v4 21/21] usb: dwc2: host: If using uframe scheduler, end splits better Douglas Anderson 2016-01-21 5:04 ` Douglas Anderson
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