On Mon, Aug 06, 2018 at 03:17:44PM +0200, Vasily Gorbik wrote: > Currently if CONFIG_FTRACE_MCOUNT_RECORD is enabled -mrecord-mcount > compiler flag support is tested for every Makefile. Good catch. Does it make a measurable compile time difference? > > Top 4 cc-option usages: > 511 -mrecord-mcount > 11 -fno-stack-protector > 9 -Wno-override-init > 2 -fsched-pressure > > To address that move cc-option from scripts/Makefile.build to top Makefile > and export CC_USING_RECORD_MCOUNT to be used in original place. > > While doing that also add -mrecord-mcount to CC_FLAGS_FTRACE (if gcc > actually supports it). > > Signed-off-by: Vasily Gorbik <gor@xxxxxxxxxxxxx> Acked-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
