scripts: Retire legacy Sparse and Smatch regression wrappers

Use the dedicated native analyzer targets instead of regression wrappers
that return success after tool failures and summarize filtered output.

Remove their suffix switches and the analyzer-only IBM VIO option.
Update the regression caller and kernel-option parser together; the
maintained kernel list and compilation matrix are unchanged. Keep legacy
Checkpatch until its own integration series.

scripts/kernel/kernel-matrix

@@ -28,11 +28,8 @@ strip_kernel_options() {
 	while true; do
 		case "${stripped_kernel}" in
 			*-nc) stripped_kernel="${stripped_kernel%-nc}" ;;
-			*-ns) stripped_kernel="${stripped_kernel%-ns}" ;;
-			*-nm) stripped_kernel="${stripped_kernel%-nm}" ;;
 			*-4) stripped_kernel="${stripped_kernel%-4}" ;;
 			*-f) stripped_kernel="${stripped_kernel%-f}" ;;
-			*-i) stripped_kernel="${stripped_kernel%-i}" ;;
 			*-u) stripped_kernel="${stripped_kernel%-u}" ;;
 			*-p) stripped_kernel="${stripped_kernel%-p}" ;;
 			*) return ;;

scripts/kernel/run-regression-tests

@@ -37,7 +37,6 @@
 # - Run checkpatch on the SCST kernel patch.
 # - Apply the SCST kernel patch to the kernel tree.
 # - Run 'make allmodconfig'.
-# - Run the sparse source code checker on the SCST directory.
 # - Run 'make headers_check'.
 # - Compile the kernel tree.
 # - Run 'make checkstack'.
@@ -432,84 +431,6 @@ function compile_kernel {
   return 0
 }
 
-# Run the source code verification tool 'sparse' on the SCST code. Assumes that
-# there is a patched kernel tree present in directory "${outputdir}/linux-$1".
-# For more information about endianness annotations, see also
-# http://lwn.net/Articles/205624/.
-function run_sparse {
-  local k="$1"
-  local kver plevel
-  kver="$(kernel_version "$1")"
-  plevel="$(patchlevel "$1")"
-  local outputfile="${outputdir}/sparse-$1-output.txt"
-  shift
-
-  echo "Running sparse on the patched kernel in $* ..."
-  if (cd "${outputdir}/linux-$k" \
-      && make -s modules_prepare \
-      && make -s scripts \
-      && if grep -q '^CONFIG_PPC=y$' .config; then LC_ALL=C KBUILD_MODPOST_WARN=1 make -k M=arch/powerpc/lib; fi \
-      && for subdir; do
-	  LC_ALL=C KBUILD_MODPOST_WARN=1 make -k C=2 CF="-D__CHECK_ENDIAN__ -DCONFIG_SPARSE_RCU_POINTER" M="${subdir}"
-      done
-    ) &> "${outputfile}"
-  then
-    local errors warnings
-    errors=$(grep -c ' error:' "${outputfile}")
-    warnings=$(grep -c ' warning:' "${outputfile}")
-    echo "${errors} errors / ${warnings} warnings."
-    grep -E ' warning:| error:' < "${outputfile}" \
-      | sed -e 's/^[^:]*:[0-9:]* //' \
-            -e "s/context imbalance in '[^']*':/context imbalance in <function>:/g" \
-            -e "s/context problem in '[^']*': '[^']*'/context problem in <function>: <function>/g" \
-            -e "s/function '[^']*'/function/g" \
-            -e "s/symbol '[^']*'/symbol/g" \
-      | sort \
-      | uniq -c
-  else
-    echo FAILED
-  fi
-
-  return 0
-}
-
-# Run smatch for kernel version $1 on directories $2..$n
-function run_smatch {
-  local k="$1"
-  local kver plevel
-  kver="$(kernel_version "$1")"
-  plevel="$(patchlevel "$1")"
-  local outputfile="${outputdir}/smatch-$1-output.txt"
-  local disable="" # "CONFIG_DYNAMIC_DEBUG"
-  shift
-
-  echo "Running smatch on the patched kernel in $* ..."
-  if (cd "${outputdir}/linux-$k" &&
-      for c in $disable; do sed -i.tmp "s/^$c=y\$/$c=n/" .config; done &&
-      make -s oldconfig </dev/null &&
-      make -s modules_prepare &&
-      make -s scripts &&
-      if grep -q '^CONFIG_PPC=y$' .config; then LC_ALL=C KBUILD_MODPOST_WARN=1 make -k M=arch/powerpc/lib; fi &&
-      for subdir; do
-	LC_ALL=C KBUILD_MODPOST_WARN=1 make -k CHECK="smatch -p=kernel" C=2 CF=-D__CHECK_ENDIAN__ M="${subdir}"
-      done
-    ) &> "${outputfile}"
-  then
-    local errors warnings
-    errors=$(grep -c ' error:' "${outputfile}")
-    warnings=$(grep -c ' warn:' "${outputfile}")
-    echo "${errors} errors / ${warnings} warnings."
-    grep -E ' info:| warn:| error:' < "${outputfile}" |
-      sed 's/^\([^:]*\):[0-9:]* /\1: /;s/\((see line \)[0-9]*\()\)/\1...\2/' |
-      sort |
-      uniq -c
-  else
-    echo FAILED
-  fi
-
-  return 0
-}
-
 function run_checkstack {
   local kver plevel
   kver="$(kernel_version "$1")"
@@ -674,10 +595,7 @@ do
 
   full_check="false"
   generate_kernel_patch_options=""
-  ibmvio="false"
   run_checkpatch="true"
-  run_sparse="true"
-  run_smatch="true"
   ipv6="true"
   while true; do
     kv_without_opt="${kv%-?}"
@@ -688,10 +606,7 @@ do
     case "${kopt}" in
       '-4')  ipv6="false";;
       '-f')  full_check="true";;
-      '-i')  ibmvio="true";;
       '-nc') run_checkpatch="false";;
-      '-ns') run_sparse="false";;
-      '-nm') run_smatch="false";;
       '-u')  generate_kernel_patch_options="-u";;
       '-p')  multiple_patches="true";;
       *)     break;;
@@ -729,30 +644,6 @@ do
   done
   export KCFLAGS
   subdirs=(drivers/scst drivers/scsi/qla2xxx)
-  if [ "${run_sparse}" = "true" ]; then
-    if [ "$(type -p sparse)" = "" ]; then
-      echo "Error: sparse has not yet been installed."
-      echo "See also http://www.kernel.org/pub/software/devel/sparse/."
-    else
-      run_sparse "$k" "${subdirs[@]}"
-      mv "${outputdir}/sparse-$k-output.txt" \
-         "${outputdir}/sparse-$k-scst-output.txt"
-      if [ "${ibmvio}" = "true" ]; then
-        run_sparse "$k" drivers/scsi libsrp.ko scsi_sysfs.ko \
-                                   scsi_transport_fc.ko scsi_transport_srp.ko
-        mv "${outputdir}/sparse-$k-output.txt" \
-           "${outputdir}/sparse-$k-scsi-output.txt"
-      fi
-    fi
-  fi
-  if [ "${run_smatch}" = "true" ]; then
-    if [ "$(type -p smatch)" = "" ]; then
-      echo "Error: smatch has not yet been installed."
-      echo "See also http://smatch.sourceforge.net/."
-    else
-      run_smatch "$k" "${subdirs[@]}"
-    fi
-  fi
   compile_kernel "$k" "${subdirs[@]}"
   if [ "${full_check}" = "true" ]; then
     run_headers_check "$k"