# ========================================================================== # Installing headers # # header-y - list files to be installed. They are preprocessed # to remove __KERNEL__ section of the file # genhdr-y - Same as header-y but in a generated/ directory # # ========================================================================== # generated header directory gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj))) kbuild-file := $(srctree)/$(obj)/Kbuild include $(kbuild-file) # called may set destination dir (when installing to asm/) _dst := $(if $(destination-y),$(destination-y),$(if $(dst),$(dst),$(obj))) old-kbuild-file := $(srctree)/$(subst uapi/,,$(obj))/Kbuild ifneq ($(wildcard $(old-kbuild-file)),) include $(old-kbuild-file) endif include scripts/Kbuild.include installdir := $(INSTALL_HDR_PATH)/$(subst uapi/,,$(_dst)) header-y := $(sort $(header-y)) subdirs := $(patsubst %/,%,$(filter %/, $(header-y))) header-y := $(filter-out %/, $(header-y)) # files used to track state of install/check install-file := $(installdir)/.install check-file := $(installdir)/.check # generic-y list all files an architecture uses from asm-generic # Use this to build a list of headers which require a wrapper wrapper-files := $(filter $(header-y), $(generic-y)) srcdir := $(srctree)/$(obj) gendir := $(objtree)/$(gen) oldsrcdir := $(srctree)/$(subst /uapi,,$(obj)) # all headers files for this dir header-y := $(filter-out $(generic-y), $(header-y)) all-files := $(header-y) $(genhdr-y) $(wrapper-files) output-files := $(addprefix $(installdir)/, $(all-files)) input-files1 := $(foreach hdr, $(header-y), \ $(if $(wildcard $(srcdir)/$(hdr)), \ $(wildcard $(srcdir)/$(hdr))) \ ) input-files1-name := $(notdir $(input-files1)) input-files2 := $(foreach hdr, $(header-y), \ $(if $(wildcard $(srcdir)/$(hdr)),, \ $(if $(wildcard $(oldsrcdir)/$(hdr)), \ $(wildcard $(oldsrcdir)/$(hdr)), \ $(error Missing UAPI file $(srcdir)/$(hdr))) \ )) input-files2-name := $(notdir $(input-files2)) input-files3 := $(foreach hdr, $(genhdr-y), \ $(if $(wildcard $(gendir)/$(hdr)), \ $(wildcard $(gendir)/$(hdr)), \ $(error Missing generated UAPI file $(gendir)/$(hdr)) \ )) input-files3-name := $(notdir $(input-files3)) # Work out what needs to be removed oldheaders := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h)) unwanted := $(filter-out $(all-files),$(oldheaders)) # Prefix unwanted with full paths to $(INSTALL_HDR_PATH) unwanted-file := $(addprefix $(installdir)/, $(unwanted)) printdir = $(patsubst $(INSTALL_HDR_PATH)/%/,%,$(dir $@)) quiet_cmd_install = INSTALL $(printdir) ($(words $(all-files))\ file$(if $(word 2, $(all-files)),s)) cmd_install = \ $(CONFIG_SHELL) $< $(installdir) $(srcdir) $(input-files1-name); \ $(CONFIG_SHELL) $< $(installdir) $(oldsrcdir) $(input-files2-name); \ $(CONFIG_SHELL) $< $(installdir) $(gendir) $(input-files3-name); \ for F in $(wrapper-files); do \ echo "\#include " > $(installdir)/$$F; \ done; \ touch $@ quiet_cmd_remove = REMOVE $(unwanted) cmd_remove = rm -f $(unwanted-file) quiet_cmd_check = CHECK $(printdir) ($(words $(all-files)) files) # Headers list can be pretty long, xargs helps to avoid # the "Argument list too long" error. cmd_check = for f in $(all-files); do \ echo "$(installdir)/$${f}"; done \ | xargs \ $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \ touch $@ PHONY += __headersinst __headerscheck ifndef HDRCHECK # Rules for installing headers __headersinst: $(subdirs) $(install-file) @: targets += $(install-file) $(install-file): scripts/headers_install.sh $(input-files1) $(input-files2) $(input-files3) FORCE $(if $(unwanted),$(call cmd,remove),) $(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@))) $(call if_changed,install) else __headerscheck: $(subdirs) $(check-file) @: targets += $(check-file) $(check-file): scripts/headers_check.pl $(output-files) FORCE $(call if_changed,check) endif # Recursion .PHONY: $(subdirs) $(subdirs): $(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(_dst)/$@ targets := $(wildcard $(sort $(targets))) cmd_files := $(wildcard \ $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) ifneq ($(cmd_files),) include $(cmd_files) endif .PHONY: $(PHONY) PHONY += FORCE FORCE: ; >
authorThomas Gleixner <tglx@linutronix.de>2017-01-31 09:37:34 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 21:47:58 +0100
commit0becc0ae5b42828785b589f686725ff5bc3b9b25 (patch)
treebe6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101 /net/openvswitch/datapath.c
parent24c2503255d35c269b67162c397a1a1c1e02f6ce (diff)
x86/mce: Make timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'net/openvswitch/datapath.c')