arch: remove tile port

The Tile architecture port was added by Chris Metcalf in 2010, and
maintained until early 2018 when he orphaned it due to his departure
from Mellanox, and nobody else stepped up to maintain it. The product
line is still around in the form of the BlueField SoC, but no longer
uses the Tile architecture.

There are also still products for sale with Tile-GX SoCs, notably the
Mikrotik CCR router family. The products all use old (linux-3.3) kernels
with lots of patches and won't be upgraded by their manufacturers. There
have been efforts to port both OpenWRT and Debian to these, but both
projects have stalled and are very unlikely to be continued in the future.

Given that we are reasonably sure that nobody is still using the port
with an upstream kernel any more, it seems better to remove it now while
the port is in a good shape than to let it bitrot for a few years first.

Cc: Chris Metcalf <chris.d.metcalf@gmail.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: http://www.mellanox.com/page/npu_multicore_overview
Link: https://jenkins.debian.net/view/rebootstrap/job/rebootstrap_tilegx_gcc7/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 117 deletions

diff --git a/arch/tile/kernel/vdso/Makefile b/arch/tile/kernel/vdso/Makefile
deleted file mode 100644
index b596a7396382..000000000000
--- a/arch/tile/kernel/vdso/Makefile
+++ /dev/null
@@ -1,117 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-# Symbols present in the vdso
-vdso-syms = rt_sigreturn gettimeofday
-
-# Files to link into the vdso
-obj-vdso = $(patsubst %, v%.o, $(vdso-syms))
-
-# Build rules
-targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.lds vdso-dummy.o
-obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
-
-# vdso32 is only for tilegx -m32 compat task.
-VDSO32-$(CONFIG_COMPAT) := y
-
-obj-y += vdso.o vdso-syms.o
-obj-$(VDSO32-y) += vdso32.o
-CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
-
-# vDSO code runs in userspace and -pg doesn't help with profiling anyway.
-CFLAGS_REMOVE_vdso.o = -pg
-CFLAGS_REMOVE_vdso32.o = -pg
-CFLAGS_REMOVE_vrt_sigreturn.o = -pg
-CFLAGS_REMOVE_vrt_sigreturn32.o = -pg
-CFLAGS_REMOVE_vgettimeofday.o = -pg
-CFLAGS_REMOVE_vgettimeofday32.o = -pg
-
-ifdef CONFIG_FEEDBACK_COLLECT
-# vDSO code runs in userspace, not collecting feedback data.
-CFLAGS_REMOVE_vdso.o = -ffeedback-generate
-CFLAGS_REMOVE_vdso32.o = -ffeedback-generate
-CFLAGS_REMOVE_vrt_sigreturn.o = -ffeedback-generate
-CFLAGS_REMOVE_vrt_sigreturn32.o = -ffeedback-generate
-CFLAGS_REMOVE_vgettimeofday.o = -ffeedback-generate
-CFLAGS_REMOVE_vgettimeofday32.o = -ffeedback-generate
-endif
-
-# Disable gcov profiling for VDSO code
-GCOV_PROFILE := n
-
-# Force dependency
-$(obj)/vdso.o: $(obj)/vdso.so
-
-# link rule for the .so file, .lds has to be first
-SYSCFLAGS_vdso.so.dbg = $(c_flags)
-$(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso) FORCE
-	$(call if_changed,vdsold)
-
-# We also create a special relocatable object that should mirror the symbol
-# table and layout of the linked DSO.  With ld -R we can then refer to
-# these symbols in the kernel code rather than hand-coded addresses.
-
-SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \
-                            $(call cc-ldoption, -Wl$(comma)--hash-style=both)
-SYSCFLAGS_vdso_dummy.o = -r
-$(obj)/vdso-dummy.o: $(src)/vdso.lds $(obj)/vrt_sigreturn.o FORCE
-	$(call if_changed,vdsold)
-
-LDFLAGS_vdso-syms.o := -r -R
-$(obj)/vdso-syms.o: $(obj)/vdso-dummy.o FORCE
-	$(call if_changed,ld)
-
-# strip rule for the .so file
-$(obj)/%.so: OBJCOPYFLAGS := -S
-$(obj)/%.so: $(obj)/%.so.dbg FORCE
-	$(call if_changed,objcopy)
-
-# actual build commands
-# The DSO images are built using a special linker script
-# Add -lgcc so tilepro gets static muldi3 and lshrdi3 definitions.
-# Make sure only to export the intended __vdso_xxx symbol offsets.
-quiet_cmd_vdsold = VDSOLD  $@
-      cmd_vdsold = $(CC) $(KCFLAGS) -nostdlib $(SYSCFLAGS_$(@F)) \
-                           -Wl,-T,$(filter-out FORCE,$^) -o $@.tmp -lgcc && \
-                   $(CROSS_COMPILE)objcopy \
-                           $(patsubst %, -G __vdso_%, $(vdso-syms)) $@.tmp $@
-
-# install commands for the unstripped file
-quiet_cmd_vdso_install = INSTALL $@
-      cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
-
-vdso.so: $(obj)/vdso.so.dbg
-	@mkdir -p $(MODLIB)/vdso
-	$(call cmd,vdso_install)
-
-vdso32.so: $(obj)/vdso32.so.dbg
-	$(call cmd,vdso_install)
-
-vdso_install: vdso.so
-vdso32_install: vdso32.so
-
-
-KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS))
-KBUILD_AFLAGS_32 += -m32 -s
-KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
-KBUILD_CFLAGS_32 += -m32 -fPIC -shared
-
-obj-vdso32 = $(patsubst %, v%32.o, $(vdso-syms))
-
-targets += $(obj-vdso32) vdso32.so vdso32.so.dbg
-obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
-
-$(obj-vdso32:%=%): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
-$(obj-vdso32:%=%): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
-
-$(obj)/vgettimeofday32.o: $(obj)/vgettimeofday.c FORCE
-	$(call if_changed_rule,cc_o_c)
-
-$(obj)/vrt_sigreturn32.o: $(obj)/vrt_sigreturn.S FORCE
-	$(call if_changed,as_o_S)
-
-# Force dependency
-$(obj)/vdso32.o: $(obj)/vdso32.so
-
-SYSCFLAGS_vdso32.so.dbg = -m32 -shared -s -Wl,-soname=linux-vdso32.so.1 \
-			    $(call cc-ldoption, -Wl$(comma)--hash-style=both)
-$(obj)/vdso32.so.dbg: $(src)/vdso.lds $(obj-vdso32) FORCE
-	$(call if_changed,vdsold)