From: Felipe Balbi Date: Fri, 30 Sep 2016 11:12:34 +0000 (+0300) Subject: usb: dwc3: don't compile dwc3_trace() unless CONFIG_FTRACE=y X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=57b14da56227217424493c9e0632877b740d2a09;p=linux-beck.git usb: dwc3: don't compile dwc3_trace() unless CONFIG_FTRACE=y We don't need dwc3_trace() unless we're building a kernel with CONFIG_FTRACE. This patch reduces dwc3.ko text size a bit while also removing overhead of dwc3_trace() calls. text data bss dec hex filename 50796 581 0 51377 c8b1 drivers/usb/dwc3/dwc3.o 43961 581 0 44542 adfe drivers/usb/dwc3/dwc3.o.patched Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 22420e17d68b..84de1e4151c4 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -3,7 +3,11 @@ CFLAGS_trace.o := -I$(src) obj-$(CONFIG_USB_DWC3) += dwc3.o -dwc3-y := core.o debug.o trace.o +dwc3-y := core.o + +ifneq ($(CONFIG_FTRACE),) + dwc3-y += debug.o trace.o +endif ifneq ($(filter y,$(CONFIG_USB_DWC3_HOST) $(CONFIG_USB_DWC3_DUAL_ROLE)),) dwc3-y += host.o diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index b287fc6ab29e..d93780e84f07 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -344,7 +344,13 @@ static inline const char *dwc3_gadget_generic_cmd_status_string(int status) } } + +#if IS_ENABLED(CONFIG_FTRACE) void dwc3_trace(void (*trace)(struct va_format *), const char *fmt, ...); +#else +static inline void dwc3_trace(void (*trace)(struct va_format *), const char *fmt, ...) +{ } +#endif #ifdef CONFIG_DEBUG_FS extern void dwc3_debugfs_init(struct dwc3 *);