Merge pull request #30639 from mrc0mmand/more-cocci-shenanigans

Another batch of Coccinelle tweaks

diff --cc coccinelle/run-coccinelle.sh
index 32b81e1efbae052b57fdef6652db62a5cbe1b458,79536b38954e51220249f34c04766cc6b848eed6..af5dd359884d4ad6c09f500a09e01ce039f9a289
--- 1/coccinelle/run-coccinelle.sh
--- 2/coccinelle/run-coccinelle.sh
+++ b/coccinelle/run-coccinelle.sh
@@@ -67,16 -55,18 +55,18 @@@ for script in "${SCRIPTS[@]}"; d
      # at once one spatch process can take around 2.5 GiB of RAM, which can easily eat up all available RAM
      # when paired together with parallel
      #
-     # 2) Make sure spatch can find our includes via -I <dir>, similarly as we do when compiling stuff
+     # 2) Make sure spatch can find our includes via -I <dir>, similarly as we do when compiling stuff.
+     #    Also, include the system include path as well, since we're not kernel and we make use of the stdlib
+     #    (and other libraries).
      #
      # 3) Make sure to include includes from includes (--recursive-includes), but use them only to get type
 -    # definitions (--include-headers-for-types) - otherwise we'd start formating them as well, which might be
 -    # unwanted, especially for includes we fetch verbatim from third-parties
 +    # definitions (--include-headers-for-types) - otherwise we'd start formatting them as well, which might
 +    # be unwanted, especially for includes we fetch verbatim from third-parties
      #
-     # 4) Use cache, since generating the full AST is _very_ expensive, i.e. the uncached run takes 15 - 30
-     # minutes (for one rule(!)), vs 30 - 90 seconds when the cache is populated. One major downside of the
-     # cache is that it's quite big - ATTOW the cache takes around 15 GiB, but the performance boost is
-     # definitely worth it
+     # 4) Explicitly undefine the SD_BOOT symbol, so Coccinelle ignores includes guarded by #if SD_BOOT
+     #
+     # 5) Use cache, since generating the full AST is expensive. With cache we can do that only once and then
+     #    reuse the cached ASTs for other rules. This cuts down the time needed to run each rule by ~60%.
      parallel --halt now,fail=1 --keep-order --noswap --max-args=10 \
          spatch --cache-prefix "$CACHE_DIR" \
                 -I src \