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, 234 insertions, 0 deletions

diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
new file mode 100755
index 000000000..531c0e0e8
--- /dev/null
+++ b/tools/perf/check-headers.sh
@@ -0,0 +1,234 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+YELLOW='\033[0;33m'
+NC='\033[0m' # No Color
+
+declare -a FILES=(
+  "include/uapi/linux/const.h"
+  "include/uapi/linux/bits.h"
+  "include/uapi/linux/fscrypt.h"
+  "include/uapi/linux/genetlink.h"
+  "include/uapi/linux/if_addr.h"
+  "include/uapi/linux/in.h"
+  "include/uapi/linux/kcmp.h"
+  "include/uapi/linux/kvm.h"
+  "include/uapi/linux/neighbour.h"
+  "include/uapi/linux/netfilter.h"
+  "include/uapi/linux/netfilter_arp.h"
+  "include/uapi/linux/perf_event.h"
+  "include/uapi/linux/rtnetlink.h"
+  "include/uapi/linux/seccomp.h"
+  "include/uapi/linux/stat.h"
+  "include/linux/bits.h"
+  "include/vdso/bits.h"
+  "include/linux/cfi_types.h"
+  "include/linux/const.h"
+  "include/vdso/const.h"
+  "include/vdso/unaligned.h"
+  "include/linux/gfp_types.h"
+  "include/linux/hash.h"
+  "include/linux/list-sort.h"
+  "include/uapi/linux/hw_breakpoint.h"
+  "arch/x86/include/asm/cpufeatures.h"
+  "arch/x86/include/asm/inat_types.h"
+  "arch/x86/include/asm/emulate_prefix.h"
+  "arch/x86/include/asm/msr-index.h"
+  "arch/x86/lib/x86-opcode-map.txt"
+  "arch/x86/tools/gen-insn-attr-x86.awk"
+  "arch/arm/include/uapi/asm/perf_regs.h"
+  "arch/arm64/include/uapi/asm/perf_regs.h"
+  "arch/loongarch/include/uapi/asm/perf_regs.h"
+  "arch/mips/include/uapi/asm/perf_regs.h"
+  "arch/powerpc/include/uapi/asm/perf_regs.h"
+  "arch/s390/include/uapi/asm/perf_regs.h"
+  "arch/x86/include/uapi/asm/perf_regs.h"
+  "arch/x86/include/uapi/asm/kvm.h"
+  "arch/x86/include/uapi/asm/svm.h"
+  "arch/x86/include/uapi/asm/unistd.h"
+  "arch/x86/include/uapi/asm/vmx.h"
+  "arch/powerpc/include/uapi/asm/kvm.h"
+  "arch/s390/include/uapi/asm/kvm.h"
+  "arch/s390/include/uapi/asm/sie.h"
+  "arch/arm64/include/uapi/asm/kvm.h"
+  "arch/alpha/include/uapi/asm/errno.h"
+  "arch/mips/include/asm/errno.h"
+  "arch/mips/include/uapi/asm/errno.h"
+  "arch/parisc/include/uapi/asm/errno.h"
+  "arch/powerpc/include/uapi/asm/errno.h"
+  "arch/sparc/include/uapi/asm/errno.h"
+  "arch/x86/include/uapi/asm/errno.h"
+  "include/asm-generic/bitops/arch_hweight.h"
+  "include/asm-generic/bitops/const_hweight.h"
+  "include/asm-generic/bitops/__fls.h"
+  "include/asm-generic/bitops/fls.h"
+  "include/asm-generic/bitops/fls64.h"
+  "include/linux/coresight-pmu.h"
+  "include/uapi/asm-generic/errno.h"
+  "include/uapi/asm-generic/errno-base.h"
+  "include/uapi/asm-generic/ioctls.h"
+  "include/uapi/asm-generic/mman-common.h"
+  "include/uapi/asm-generic/unistd.h"
+  "scripts/syscall.tbl"
+)
+
+declare -a SYNC_CHECK_FILES=(
+  "arch/x86/include/asm/inat.h"
+  "arch/x86/include/asm/insn.h"
+  "arch/x86/lib/inat.c"
+  "arch/x86/lib/insn.c"
+)
+
+# These copies are under tools/perf/trace/beauty/ as they are not used to in
+# building object files only by scripts in tools/perf/trace/beauty/ to generate
+# tables that then gets included in .c files for things like id->string syscall
+# tables (and the reverse lookup as well: string -> id)
+
+declare -a BEAUTY_FILES=(
+  "arch/x86/include/asm/irq_vectors.h"
+  "arch/x86/include/uapi/asm/prctl.h"
+  "include/uapi/drm/drm.h"
+  "include/uapi/drm/i915_drm.h"
+  "include/linux/socket.h"
+  "include/uapi/linux/fadvise.h"
+  "include/uapi/linux/fcntl.h"
+  "include/uapi/linux/fs.h"
+  "include/uapi/linux/mount.h"
+  "include/uapi/linux/prctl.h"
+  "include/uapi/linux/sched.h"
+  "include/uapi/linux/stat.h"
+  "include/uapi/linux/usbdevice_fs.h"
+  "include/uapi/linux/vhost.h"
+  "include/uapi/sound/asound.h"
+)
+
+declare -a FAILURES
+
+check_2 () {
+  tools_file=$1
+  orig_file=$2
+
+  shift
+  shift
+
+  cmd="diff $* $tools_file $orig_file > /dev/null"
+
+  if [ -f "$orig_file" ] && ! eval "$cmd"
+  then
+    FAILURES+=(
+      "$tools_file $orig_file"
+    )
+  fi
+}
+
+check () {
+  file=$1
+
+  shift
+
+  check_2 "tools/$file" "$file" "$@"
+}
+
+beauty_check () {
+  file=$1
+
+  shift
+
+  check_2 "tools/perf/trace/beauty/$file" "$file" "$@"
+}
+
+check_ignore_some_hunks () {
+  orig_file="$1"
+  tools_file="tools/$orig_file"
+  hunks_to_ignore="tools/perf/check-header_ignore_hunks/$orig_file"
+
+  if [ ! -f "$hunks_to_ignore" ]; then
+    echo "$hunks_to_ignore not found. Skipping $orig_file check."
+    FAILURES+=(
+      "$tools_file $orig_file"
+    )
+    return
+  fi
+
+  cmd="diff -u \"$tools_file\" \"$orig_file\" | grep -vf \"$hunks_to_ignore\" | wc -l | grep -qw 0"
+
+  if [ -f "$orig_file" ] && ! eval "$cmd"
+  then
+    FAILURES+=(
+      "$tools_file $orig_file"
+    )
+  fi
+}
+
+
+# Check if we have the kernel headers (tools/perf/../../include), else
+# we're probably on a detached tarball, so no point in trying to check
+# differences.
+if ! [ -d ../../include ]
+then
+  echo -e "${YELLOW}Warning${NC}: Skipped check-headers due to missing ../../include"
+  exit 0
+fi
+
+cd ../..
+
+# simple diff check
+for i in "${FILES[@]}"
+do
+  check "$i" -B
+done
+
+for i in "${SYNC_CHECK_FILES[@]}"
+do
+  check "$i" '-I "^.*\/\*.*__ignore_sync_check__.*\*\/.*$"'
+done
+
+# diff with extra ignore lines
+check arch/x86/lib/memcpy_64.S        '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>" -I"^SYM_FUNC_START\(_LOCAL\)*(memcpy_\(erms\|orig\))" -I"^#include <linux/cfi_types.h>"'
+check arch/x86/lib/memset_64.S        '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>" -I"^SYM_FUNC_START\(_LOCAL\)*(memset_\(erms\|orig\))"'
+check arch/x86/include/asm/amd/ibs.h  '-I "^#include .*/msr-index.h"'
+check include/linux/unaligned.h '-I "^#include <linux/unaligned/packed_struct.h>" -I "^#include <asm/byteorder.h>" -I "^#pragma GCC diagnostic"'
+check include/uapi/asm-generic/mman.h '-I "^#include <\(uapi/\)*asm-generic/mman-common\(-tools\)*.h>"'
+check include/uapi/linux/mman.h       '-I "^#include <\(uapi/\)*asm/mman.h>"'
+check include/linux/build_bug.h       '-I "^#\(ifndef\|endif\)\( \/\/\)* static_assert$"'
+check include/linux/ctype.h	      '-I "isdigit("'
+check lib/ctype.c		      '-I "^EXPORT_SYMBOL" -I "^#include <linux/export.h>" -B'
+
+# diff non-symmetric files
+check_2 tools/perf/arch/x86/entry/syscalls/syscall_32.tbl arch/x86/entry/syscalls/syscall_32.tbl
+check_2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl
+check_2 tools/perf/arch/powerpc/entry/syscalls/syscall.tbl arch/powerpc/kernel/syscalls/syscall.tbl
+check_2 tools/perf/arch/s390/entry/syscalls/syscall.tbl arch/s390/kernel/syscalls/syscall.tbl
+check_2 tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl arch/mips/kernel/syscalls/syscall_n64.tbl
+check_2 tools/perf/arch/arm/entry/syscalls/syscall.tbl arch/arm/tools/syscall.tbl
+check_2 tools/perf/arch/sh/entry/syscalls/syscall.tbl arch/sh/kernel/syscalls/syscall.tbl
+check_2 tools/perf/arch/sparc/entry/syscalls/syscall.tbl arch/sparc/kernel/syscalls/syscall.tbl
+check_2 tools/perf/arch/xtensa/entry/syscalls/syscall.tbl arch/xtensa/kernel/syscalls/syscall.tbl
+check_2 tools/perf/arch/alpha/entry/syscalls/syscall.tbl arch/alpha/entry/syscalls/syscall.tbl
+check_2 tools/perf/arch/parisc/entry/syscalls/syscall.tbl arch/parisc/entry/syscalls/syscall.tbl
+check_2 tools/perf/arch/arm64/entry/syscalls/syscall_32.tbl arch/arm64/entry/syscalls/syscall_32.tbl
+check_2 tools/perf/arch/arm64/entry/syscalls/syscall_64.tbl arch/arm64/entry/syscalls/syscall_64.tbl
+
+for i in "${BEAUTY_FILES[@]}"
+do
+  beauty_check "$i" -B
+done
+
+# check duplicated library files
+check_2 tools/perf/util/hashmap.h tools/lib/bpf/hashmap.h
+check_2 tools/perf/util/hashmap.c tools/lib/bpf/hashmap.c
+
+# Files with larger differences
+
+check_ignore_some_hunks lib/list_sort.c
+
+cd tools/perf || exit
+
+if [ ${#FAILURES[@]} -gt 0 ]
+then
+  echo -e "${YELLOW}Warning${NC}: Kernel ABI header differences:"
+  for i in "${FAILURES[@]}"
+  do
+    echo "  diff -u $i"
+  done
+fi