The overlay feature requires the base dtb to be built with symbols, so lets build the dtbs with symbols when overlay support was explicitly enabled. With CONFIG_OF_ALL_DTBS on ARCH=arm the 989 dtb files grow about ~38% on average. Totals in bytes with the 3 biggest ones: Before: 90471 arch/arm/boot/dts/am57xx-beagle-x15-revc.dtb 90521 arch/arm/boot/dts/am57xx-beagle-x15-revb1.dtb 92639 arch/arm/boot/dts/dra7-evm.dtb 25731296 total After: 133203 arch/arm/boot/dts/am57xx-beagle-x15-revc.dtb 133237 arch/arm/boot/dts/am57xx-beagle-x15-revb1.dtb 134545 arch/arm/boot/dts/dra7-evm.dtb 35464440 total Signed-off-by: Andre Heider <a.heider@xxxxxxxxx> --- Hi, while playing around with overlays I noticed that I needed to rebuilt my distro's device trees because they didn't come with symbols. Is that for a reason, maybe the not so minor increase in size? Thanks, Andre drivers/of/unittest-data/Makefile | 7 ------- scripts/Makefile.lib | 5 +++++ 2 files changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/of/unittest-data/Makefile b/drivers/of/unittest-data/Makefile index 32389acfa616..b65061013512 100644 --- a/drivers/of/unittest-data/Makefile +++ b/drivers/of/unittest-data/Makefile @@ -15,13 +15,6 @@ targets += overlay.dtb overlay.dtb.S targets += overlay_bad_phandle.dtb overlay_bad_phandle.dtb.S targets += overlay_bad_symbol.dtb overlay_bad_symbol.dtb.S targets += overlay_base.dtb overlay_base.dtb.S - -# enable creation of __symbols__ node -DTC_FLAGS_overlay := -@ -DTC_FLAGS_overlay_bad_phandle := -@ -DTC_FLAGS_overlay_bad_symbol := -@ -DTC_FLAGS_overlay_base := -@ - endif .PRECIOUS: \ diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 1ca4dcd2d500..c7ba4aa8a07a 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -278,6 +278,11 @@ DTC_FLAGS += -Wnode_name_chars_strict \ -Wproperty_name_chars_strict endif +ifeq ($(CONFIG_OF_OVERLAY),y) +# enable creation of __symbols__ node +DTC_FLAGS += -@ +endif + DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) # Generate an assembly file to wrap the output of the device tree compiler -- 2.15.1 -- 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
