kbuild: reduce the number of mkdir calls during modules_install
Calling 'mkdir' for every module results in redundant syscalls.
Use $(sort ...) to drop the duplicated directories.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst
index 7a64ece..96fea7c 100644
--- a/scripts/Makefile.modinst
+++ b/scripts/Makefile.modinst
@@ -9,6 +9,8 @@
include include/config/auto.conf
include $(srctree)/scripts/Kbuild.include
+install-y :=
+
modules := $(call read-file, $(MODORDER))
ifeq ($(KBUILD_EXTMOD),)
@@ -27,6 +29,7 @@
suffix-$(CONFIG_MODULE_COMPRESS_ZSTD) := .zst
modules := $(patsubst $(extmod_prefix)%.o, $(dst)/%.ko$(suffix-y), $(modules))
+install-$(CONFIG_MODULES) += $(modules)
__modinst: $(modules)
@:
@@ -35,7 +38,7 @@
# Installation
#
quiet_cmd_install = INSTALL $@
- cmd_install = mkdir -p $(dir $@); cp $< $@
+ cmd_install = cp $< $@
# Strip
#
@@ -81,6 +84,9 @@
ifeq ($(modules_sign_only),)
+# Create necessary directories
+$(shell mkdir -p $(sort $(dir $(install-y))))
+
$(dst)/%.ko: $(extmod_prefix)%.ko FORCE
$(call cmd,install)
$(call cmd,strip)
