coccicheck: make batch size of 0 mean "unlimited"

diff --git a/Makefile b/Makefile
index daba958b8f4514af18ecd1c6b116b9fe38a40afc..9cea614523fc319111af5aba9381788de87f4f0c 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1176,6 +1176,7 @@ SP_EXTRA_FLAGS =
 
 # For the 'coccicheck' target; setting SPATCH_BATCH_SIZE higher will
 # usually result in less CPU usage at the cost of higher peak memory.
+# Setting it to 0 will feed all files in a single spatch invocation.
 SPATCH_FLAGS = --all-includes --patch .
 SPATCH_BATCH_SIZE = 1
 
@@ -2792,7 +2793,12 @@ endif
 
 %.cocci.patch: %.cocci $(COCCI_SOURCES)
        @echo '    ' SPATCH $<; \
-       if ! echo $(COCCI_SOURCES) | xargs -n $(SPATCH_BATCH_SIZE) \
+       if test $(SPATCH_BATCH_SIZE) = 0; then \
+               limit=; \
+       else \
+               limit='-n $(SPATCH_BATCH_SIZE)'; \
+       fi; \
+       if ! echo $(COCCI_SOURCES) | xargs $$limit \
                $(SPATCH) --sp-file $< $(SPATCH_FLAGS) \
                >$@+ 2>$@.log; \
        then \