test: add slow test for rebuilding entire tree

Only gets run with the slow integration tests, not "make quick".

test/integration/kpatch-test

@@ -28,6 +28,8 @@
 #
 # - foo.patch: patch that should build successfully
 #
+# - foo-SLOW.patch: patch that should be skipped in the quick test
+#
 # - bar-FAIL.patch: patch that should fail to build
 #
 # - foo-LOADED.test: executable which tests whether the foo.patch module is
@@ -103,7 +105,7 @@ build_module() {
 
 	[[ $prefix = COMBINED ]] && return
 
-	if [[ $prefix = *-FAIL ]]; then
+	if [[ $prefix =~ -FAIL ]]; then
 		shouldfail=1
 	else
 		shouldfail=0
@@ -132,7 +134,7 @@ run_load_test() {
 	testprog=$prefix-LOADED.test
 
 	[[ $prefix = COMBINED ]] && return
-	[[ $prefix = *-FAIL ]] && return
+	[[ $prefix =~ -FAIL ]] && return
 
 	if [[ ! -e $module ]]; then
 		log "can't find $module, skipping"
@@ -208,8 +210,8 @@ build_combined_module() {
 	for file in *.patch; do
 		prefix=${file%%.patch}
 
-		[[ $prefix = *-FAIL ]] && continue
-		[[ $prefix = meminfo-cmdline ]] && continue # HACK
+		[[ $prefix =~ -FAIL ]] && continue
+		[[ $prefix =~ -SLOW ]] && continue
 
 		log "combine: $prefix"
 

test/integration/meminfo-cmdline-rebuild-SLOW.patch

@@ -15,7 +15,7 @@ Index: src/fs/proc/meminfo.c
 ===================================================================
 --- src.orig/fs/proc/meminfo.c
 +++ src/fs/proc/meminfo.c
-@@ -95,7 +95,7 @@ static int meminfo_proc_show(struct seq_
+@@ -131,7 +131,7 @@ static int meminfo_proc_show(struct seq_
  		"Committed_AS:   %8lu kB\n"
  		"VmallocTotal:   %8lu kB\n"
  		"VmallocUsed:    %8lu kB\n"
@@ -24,3 +24,15 @@ Index: src/fs/proc/meminfo.c
  #ifdef CONFIG_MEMORY_FAILURE
  		"HardwareCorrupted: %5lu kB\n"
  #endif
+Index: src/include/linux/kernel.h
+===================================================================
+--- src.orig/include/linux/kernel.h
++++ src/include/linux/kernel.h
+@@ -2,6 +2,7 @@
+ #define _LINUX_KERNEL_H
+ 
+ 
++
+ #include <stdarg.h>
+ #include <linux/linkage.h>
+ #include <linux/stddef.h>

test/integration/replace.test

@@ -27,7 +27,7 @@ test_replace() {
 }
 
 # subset
-test_replace kpatch-meminfo-cmdline.ko kpatch-cmdline-string.ko
+test_replace kpatch-meminfo-cmdline-rebuild-SLOW.ko kpatch-cmdline-string.ko
 
 # disjoint
 test_replace kpatch-cmdline-string.ko kpatch-meminfo-string.ko