Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

Pull RCU updates from Paul McKenney:

  1. Miscellaneous fixes.
  2. kfree_rcu() updates.
  3. Remove scheduler locking restriction
  4. RCU-tasks update, including addition of RCU Tasks Trace for
     BPF use and RCU Tasks Rude.  (This branch is on top of #3 due
     to overlap of changed code.)
  5. RCU CPU stall warning updates.
  6. Torture-test updates.

3 files changed, 10 insertions, 26 deletions

diff --git a/scripts/gcc-plugins/.gitignore b/scripts/gcc-plugins/.gitignore
index de92ed9e3d83..b04e0f0f033e 100644
--- a/scripts/gcc-plugins/.gitignore
+++ b/scripts/gcc-plugins/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
 randomize_layout_seed.h
diff --git a/scripts/gcc-plugins/Kconfig b/scripts/gcc-plugins/Kconfig
index e3569543bdac..013ba3a57669 100644
--- a/scripts/gcc-plugins/Kconfig
+++ b/scripts/gcc-plugins/Kconfig
@@ -1,13 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-preferred-plugin-hostcc := $(if-success,[ $(gcc-version) -ge 40800 ],$(HOSTCXX),$(HOSTCC))
-
-config PLUGIN_HOSTCC
-	string
-	default "$(shell,$(srctree)/scripts/gcc-plugin.sh "$(preferred-plugin-hostcc)" "$(HOSTCXX)" "$(CC)")" if CC_IS_GCC
-	help
-	  Host compiler used to build GCC plugins.  This can be $(HOSTCXX),
-	  $(HOSTCC), or a null string if GCC plugin is unsupported.
-
 config HAVE_GCC_PLUGINS
 	bool
 	help
@@ -17,13 +8,14 @@ config HAVE_GCC_PLUGINS
 menuconfig GCC_PLUGINS
 	bool "GCC plugins"
 	depends on HAVE_GCC_PLUGINS
-	depends on PLUGIN_HOSTCC != ""
+	depends on CC_IS_GCC && GCC_VERSION >= 40800
+	depends on $(success,$(srctree)/scripts/gcc-plugin.sh $(CC))
 	default y
 	help
 	  GCC plugins are loadable modules that provide extra features to the
 	  compiler. They are useful for runtime instrumentation and static analysis.
 
-	  See Documentation/core-api/gcc-plugins.rst for details.
+	  See Documentation/kbuild/gcc-plugins.rst for details.
 
 if GCC_PLUGINS
 
diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile
index f2ee8bd7abc6..f22858b2c3d6 100644
--- a/scripts/gcc-plugins/Makefile
+++ b/scripts/gcc-plugins/Makefile
@@ -1,18 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0
-PLUGINCC := $(CONFIG_PLUGIN_HOSTCC:"%"=%)
 GCC_PLUGINS_DIR := $(shell $(CC) -print-file-name=plugin)
 
-ifeq ($(PLUGINCC),$(HOSTCC))
-  HOSTLIBS := hostlibs
-  HOST_EXTRACFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(src) -std=gnu99 -ggdb
-  export HOST_EXTRACFLAGS
-else
-  HOSTLIBS := hostcxxlibs
-  HOST_EXTRACXXFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(src) -std=gnu++98 -fno-rtti
-  HOST_EXTRACXXFLAGS += -fno-exceptions -fasynchronous-unwind-tables -ggdb
-  HOST_EXTRACXXFLAGS += -Wno-narrowing -Wno-unused-variable
-  export HOST_EXTRACXXFLAGS
-endif
+HOST_EXTRACXXFLAGS += -I$(GCC_PLUGINS_DIR)/include -I$(src) -std=gnu++98 -fno-rtti
+HOST_EXTRACXXFLAGS += -fno-exceptions -fasynchronous-unwind-tables -ggdb
+HOST_EXTRACXXFLAGS += -Wno-narrowing -Wno-unused-variable -Wno-c++11-compat
 
 $(obj)/randomize_layout_plugin.o: $(objtree)/$(obj)/randomize_layout_seed.h
 quiet_cmd_create_randomize_layout_seed = GENSEED $@
@@ -22,9 +13,9 @@ $(objtree)/$(obj)/randomize_layout_seed.h: FORCE
 	$(call if_changed,create_randomize_layout_seed)
 targets = randomize_layout_seed.h randomize_layout_hash.h
 
-$(HOSTLIBS)-y := $(foreach p,$(GCC_PLUGIN),$(if $(findstring /,$(p)),,$(p)))
-always-y := $($(HOSTLIBS)-y)
+hostcxxlibs-y := $(foreach p,$(GCC_PLUGIN),$(if $(findstring /,$(p)),,$(p)))
+always-y := $(hostcxxlibs-y)
 
-$(foreach p,$($(HOSTLIBS)-y:%.so=%),$(eval $(p)-objs := $(p).o))
+$(foreach p,$(hostcxxlibs-y:%.so=%),$(eval $(p)-objs := $(p).o))
 
 clean-files += *.so