Commit b80c2ea8 authored Apr 11, 2014 by Ido Shayevitz

usb: gadget: dwc3: Improve interrupt handler performance



Remove a costly dbg_print call in the interrupt handler.
From tests made, removing this logging save 7% cpu idle in heavy
load throughput scenario (50Mbps UL and 300Mbps DL)

Also, this debug print is not really add value for debugging,
instead one may use /proc/interrupts.

Change-Id: Iceb70e323ee7113d144dd5f7b99a2b126a4b3d76
Signed-off-by: Ido Shayevitz <idos@codeaurora.org>

parent 8c0c40d9

drivers/usb/dwc3/gadget.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -3000,8 +3000,6 @@ static irqreturn_t dwc3_thread_interrupt(int irq, void *_dwc)
		irqreturn_t ret = IRQ_NONE;
		int i;

		dbg_event(0xFF, "IRQ Thread", 0);

		spin_lock_irqsave(&dwc->lock, flags);

		for (i = 0; i < dwc->num_event_buffers; i++) {