# include/asm-generic contains a lot of files that are used # verbatim by several architectures. # # This Makefile reads the file arch/$(SRCARCH)/include/asm/Kbuild # and for each file listed in this file with generic-y creates # a small wrapper file in $(obj) (arch/$(SRCARCH)/include/generated/asm) kbuild-file := $(srctree)/arch/$(SRCARCH)/include/$(src)/Kbuild -include $(kbuild-file) include scripts/Kbuild.include # Create output directory if not already present _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj)) # Stale wrappers when the corresponding files are removed from generic-y # need removing. generated-y := $(generic-y) $(genhdr-y) $(generated-y) all-files := $(patsubst %, $(obj)/%, $(generated-y)) old-headers := $(wildcard $(obj)/*.h) unwanted := $(filter-out $(all-files),$(old-headers)) quiet_cmd_wrap = WRAP $@ cmd_wrap = echo "\#include " >$@ quiet_cmd_remove = REMOVE $(unwanted) cmd_remove = rm -f $(unwanted) all: $(patsubst %, $(obj)/%, $(generic-y)) FORCE $(if $(unwanted),$(call cmd,remove),) @: $(obj)/%.h: $(call cmd,wrap) PHONY += FORCE .PHONY: $(PHONY) FORCE: ; e-remove net-next plumbingsTobias Klauser
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authorDexuan Cui <decui@microsoft.com>2017-01-28 11:46:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-31 10:59:48 +0100
commit433e19cf33d34bb6751c874a9c00980552fe508c (patch)
treece6547ef2987fbb289fa28f03536328a42781651 /tools/perf/builtin-kmem.c
parent191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/builtin-kmem.c')