From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes Skip the xarray reservation loop when clearing all memory attributes, as storing NULL only erases the entry and never needs to allocate, so no reservation (and no cleanup of a failed one) is required in that case. Suggested-by: Sean Christopherson Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- scripts/Makefile.clean | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 scripts/Makefile.clean (limited to 'scripts/Makefile.clean') diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean new file mode 100644 index 000000000..6ead00ec7 --- /dev/null +++ b/scripts/Makefile.clean @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: GPL-2.0 +# ========================================================================== +# Cleaning up +# ========================================================================== + +src := $(srcroot)/$(obj) + +PHONY := __clean +__clean: + +include $(srctree)/scripts/Kbuild.include +include $(kbuild-file) + +# Figure out what we need to build from the various variables +# ========================================================================== + +subdir-ymn := $(sort $(subdir-y) $(subdir-m) $(subdir-) \ + $(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m) $(obj-)))) + +# Add subdir path + +subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn)) + +# build a list of files to remove, usually relative to the current +# directory + +__clean-files := \ + $(clean-files) $(targets) $(hostprogs) $(userprogs) \ + $(extra-y) $(extra-m) $(extra-) \ + $(always-y) $(always-m) $(always-) \ + $(hostprogs-always-y) $(hostprogs-always-m) $(hostprogs-always-) \ + $(userprogs-always-y) $(userprogs-always-m) $(userprogs-always-) + +__clean-files := $(filter-out $(no-clean-files), $(__clean-files)) + +__clean-files := $(wildcard $(addprefix $(obj)/, $(__clean-files))) + +# ========================================================================== + +# To make this rule robust against "Argument list too long" error, +# remove $(obj)/ prefix, and restore it by a shell command. +quiet_cmd_clean = CLEAN $(obj) + cmd_clean = printf '$(obj)/%s ' $(patsubst $(obj)/%,%,$(__clean-files)) | xargs rm -rf + +__clean: $(subdir-ymn) +ifneq ($(strip $(__clean-files)),) + $(call cmd,clean) +endif + @: + + +# =========================================================================== +# Generic stuff +# =========================================================================== + +# Descending +# --------------------------------------------------------------------------- + +PHONY += $(subdir-ymn) +$(subdir-ymn): + $(Q)$(MAKE) $(clean)=$@ + +.PHONY: $(PHONY) -- cgit v1.3.1