scftorture: Count single_rpc offline failures in statistics outputgrafted

scf_torture_stats_print() aggregates each invoker thread's counters
into a local scf_statistics structure before printing, but the
n_single_rpc_ofl field is missing from the aggregation loop.  As a
result, the "single_rpc_ofl" value printed in the statistics line is
always zero, even when smp_call_function_single() invocations for the
RPC test have failed due to offline CPUs and been counted by the
invoker threads.

Add the missing accumulation so that the printed value reflects the
actual counts.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 156 insertions, 0 deletions

diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
new file mode 100644
index 000000000..a4484fd22
--- /dev/null
+++ b/tools/objtool/Makefile
@@ -0,0 +1,156 @@
+# SPDX-License-Identifier: GPL-2.0
+include ../scripts/Makefile.include
+include ../scripts/Makefile.arch
+
+ifeq ($(SRCARCH),x86)
+	BUILD_ORC    := y
+	ARCH_HAS_KLP := y
+endif
+
+ifeq ($(SRCARCH),loongarch)
+	BUILD_ORC	   := y
+endif
+
+ifeq ($(ARCH_HAS_KLP),y)
+	HAVE_XXHASH = $(shell printf "$(pound)include <xxhash.h>\nXXH3_state_t *state;int main() {}" | \
+		      $(HOSTCC) $(HOSTCFLAGS) -xc - -o /dev/null -lxxhash 2> /dev/null && echo y || echo n)
+	ifeq ($(HAVE_XXHASH),y)
+		BUILD_KLP	 := y
+		LIBXXHASH_CFLAGS := $(shell $(HOSTPKG_CONFIG) libxxhash --cflags 2>/dev/null) \
+				    -DBUILD_KLP
+		LIBXXHASH_LIBS   := $(shell $(HOSTPKG_CONFIG) libxxhash --libs 2>/dev/null || echo -lxxhash)
+	endif
+endif
+
+export BUILD_ORC BUILD_KLP
+
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(CURDIR)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+endif
+
+RM ?= rm -f
+
+LIBSUBCMD_DIR = $(srctree)/tools/lib/subcmd/
+ifneq ($(OUTPUT),)
+  LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd
+else
+  LIBSUBCMD_OUTPUT = $(CURDIR)/libsubcmd
+endif
+LIBSUBCMD = $(LIBSUBCMD_OUTPUT)/libsubcmd.a
+
+OBJTOOL    := $(OUTPUT)objtool
+OBJTOOL_IN := $(OBJTOOL)-in.o
+
+LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
+LIBELF_LIBS  := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
+
+all: $(OBJTOOL)
+
+WARNINGS := -Werror -Wall -Wextra -Wmissing-prototypes			\
+	    -Wmissing-declarations -Wwrite-strings			\
+	    -Wno-implicit-fallthrough -Wno-sign-compare			\
+	    -Wno-unused-parameter
+
+INCLUDES := -I$(srctree)/tools/include \
+	    -I$(srctree)/tools/include/uapi \
+	    -I$(srctree)/tools/arch/$(HOSTARCH)/include/uapi \
+	    -I$(srctree)/tools/arch/$(SRCARCH)/include	\
+	    -I$(srctree)/tools/objtool/include \
+	    -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include \
+	    -I$(srctree)/tools/lib
+
+OBJTOOL_CFLAGS  := -std=gnu11 -fomit-frame-pointer -O2 -g $(WARNINGS)	\
+		   $(INCLUDES) $(LIBELF_FLAGS) $(LIBXXHASH_CFLAGS) $(HOSTCFLAGS)
+
+OBJTOOL_LDFLAGS := $(LIBSUBCMD) $(LIBELF_LIBS) $(LIBXXHASH_LIBS) $(HOSTLDFLAGS)
+
+# Allow old libelf to be used:
+elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - 2>/dev/null | grep elf_getshdr)
+OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
+
+# Always want host compilation.
+HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)"
+
+#
+# To support disassembly, objtool needs libopcodes which is provided
+# with libbfd (binutils-dev or binutils-devel package).
+#
+# We check using HOSTCC directly rather than the shared feature framework
+# because objtool is a host tool that links against host libraries.
+#
+# When using shared libraries, -lopcodes is sufficient as dependencies are
+# resolved automatically. With static libraries, we must explicitly link
+# against libopcodes' dependencies: libbfd, libiberty, and sometimes libz.
+# Try each combination and use the first one that succeeds.
+#
+LIBOPCODES_LIBS := $(shell \
+	for libs in "-lopcodes" \
+		    "-lopcodes -lbfd" \
+		    "-lopcodes -lbfd -liberty" \
+		    "-lopcodes -lbfd -liberty -lz"; do \
+		echo 'extern void disassemble_init_for_target(void *);' \
+		     'int main(void) { disassemble_init_for_target(0); return 0; }' | \
+			$(HOSTCC) -xc - -o /dev/null $$libs 2>/dev/null && \
+			echo "$$libs" && break; \
+	done)
+
+# Styled disassembler support requires binutils >= 2.39
+HAVE_DISASM_STYLED := $(shell echo '$(pound)include <dis-asm.h>' | \
+			$(HOSTCC) -E -xc - 2>/dev/null | grep -q disassembler_style && echo y)
+
+BUILD_DISAS := n
+
+ifneq ($(LIBOPCODES_LIBS),)
+	BUILD_DISAS := y
+	OBJTOOL_CFLAGS += -DDISAS -DPACKAGE='"objtool"'
+	OBJTOOL_LDFLAGS += $(LIBOPCODES_LIBS)
+ifeq ($(HAVE_DISASM_STYLED),y)
+	OBJTOOL_CFLAGS += -DDISASM_INIT_STYLED
+endif
+endif
+
+export BUILD_DISAS
+
+AWK = awk
+MKDIR = mkdir
+
+export srctree OUTPUT CFLAGS SRCARCH AWK
+include $(srctree)/tools/build/Makefile.include
+
+$(OBJTOOL_IN): fixdep $(LIBSUBCMD) FORCE
+	$(Q)$(CONFIG_SHELL) ./sync-check.sh
+	$(Q)$(MAKE) $(build)=objtool $(HOST_OVERRIDES) CFLAGS="$(OBJTOOL_CFLAGS)" \
+		LDFLAGS="$(OBJTOOL_LDFLAGS)"
+
+
+$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
+	$(QUIET_LINK)$(HOSTCC) $(OBJTOOL_IN) $(OBJTOOL_LDFLAGS) -o $@
+
+
+$(LIBSUBCMD_OUTPUT):
+	$(Q)$(MKDIR) -p $@
+
+$(LIBSUBCMD): fixdep $(LIBSUBCMD_OUTPUT) FORCE
+	$(Q)$(MAKE) -C $(LIBSUBCMD_DIR) O=$(LIBSUBCMD_OUTPUT) \
+		DESTDIR=$(LIBSUBCMD_OUTPUT) prefix= subdir= \
+		$(HOST_OVERRIDES) EXTRA_CFLAGS="$(OBJTOOL_CFLAGS)" \
+		$@
+
+$(LIBSUBCMD)-clean:
+	$(call QUIET_CLEAN, libsubcmd)
+	$(Q)$(RM) -r -- $(LIBSUBCMD_OUTPUT)
+
+clean: $(LIBSUBCMD)-clean
+	$(Q)find $(OUTPUT) \( -name '*.o' -o -name '\.*.cmd' -o -name '\.*.d' \) -type f -print | xargs $(RM)
+	$(Q)$(RM) $(OUTPUT)arch/x86/lib/cpu-feature-names.c $(OUTPUT)fixdep
+	$(Q)$(RM) $(OUTPUT)arch/x86/lib/inat-tables.c $(OUTPUT)fixdep
+	$(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.objtool
+	$(Q)$(RM) -r -- $(OUTPUT)feature
+
+mrproper: clean
+	$(call QUIET_CLEAN, objtool) $(RM) $(OBJTOOL)
+
+FORCE:
+
+.PHONY: clean mrproper FORCE