um: always include kconfig.h and compiler-version.h

Since commit a95b37e20db9 ("kbuild: get <linux/compiler_types.h> out of
<linux/kconfig.h>") we can safely include these files in userspace code.
Doing so simplifies matters as options do not need to be exported via
asm-offsets.h anymore.

Signed-off-by: Benjamin Berg <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Johannes Berg <[e-mail]>

arch/um/Makefile

···
 USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \
 		$(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \
 		-D_FILE_OFFSET_BITS=64 -idirafter $(srctree)/include \
-		-idirafter $(objtree)/include -D__KERNEL__ -D__UM_HOST__
+		-idirafter $(objtree)/include -D__KERNEL__ -D__UM_HOST__ \
+		-include $(srctree)/include/linux/compiler-version.h \
+		-include $(srctree)/include/linux/kconfig.h
 
 #This will adjust *FLAGS accordingly to the platform.
 include $(srctree)/$(ARCH_DIR)/Makefile-os-Linux

arch/um/include/shared/common-offsets.h

···
 
 DEFINE(UM_NSEC_PER_SEC, NSEC_PER_SEC);
 DEFINE(UM_NSEC_PER_USEC, NSEC_PER_USEC);
-
-#ifdef CONFIG_PRINTK
-DEFINE(UML_CONFIG_PRINTK, CONFIG_PRINTK);
-#endif
-#ifdef CONFIG_UML_X86
-DEFINE(UML_CONFIG_UML_X86, CONFIG_UML_X86);
-#endif
-#ifdef CONFIG_64BIT
-DEFINE(UML_CONFIG_64BIT, CONFIG_64BIT);
-#endif
-#ifdef CONFIG_UML_TIME_TRAVEL_SUPPORT
-DEFINE(UML_CONFIG_UML_TIME_TRAVEL_SUPPORT, CONFIG_UML_TIME_TRAVEL_SUPPORT);
-#endif
-#ifdef CONFIG_UML_MAX_USERSPACE_ITERATIONS
-DEFINE(UML_CONFIG_UML_MAX_USERSPACE_ITERATIONS, CONFIG_UML_MAX_USERSPACE_ITERATIONS);
-#else
-DEFINE(UML_CONFIG_UML_MAX_USERSPACE_ITERATIONS, 0);
-#endif

arch/um/include/shared/timetravel.h

···
 	TT_MODE_EXTERNAL,
 };
 
-#if defined(UML_CONFIG_UML_TIME_TRAVEL_SUPPORT) || \
-    defined(CONFIG_UML_TIME_TRAVEL_SUPPORT)
+#if IS_ENABLED(CONFIG_UML_TIME_TRAVEL_SUPPORT)
 extern enum time_travel_mode time_travel_mode;
 extern int time_travel_should_print_bc_msg;
 #else
 #define time_travel_mode TT_MODE_OFF
 #define time_travel_should_print_bc_msg 0
-#endif /* (UML_)CONFIG_UML_TIME_TRAVEL_SUPPORT */
+#endif /* CONFIG_UML_TIME_TRAVEL_SUPPORT */
 
 void _time_travel_print_bc_msg(void);
 static inline void time_travel_print_bc_msg(void)

arch/um/include/shared/user.h

···
 #define UM_KERN_DEBUG	KERN_DEBUG
 #define UM_KERN_CONT	KERN_CONT
 
-#ifdef UML_CONFIG_PRINTK
+#if IS_ENABLED(CONFIG_PRINTK)
 #define printk(...) _printk(__VA_ARGS__)
 extern int _printk(const char *fmt, ...)
 	__attribute__ ((format (printf, 1, 2)));

arch/um/os-Linux/signal.c

···
 #define SIGALRM_MASK (1 << SIGALRM_BIT)
 
 int signals_enabled;
-#ifdef UML_CONFIG_UML_TIME_TRAVEL_SUPPORT
+#if IS_ENABLED(CONFIG_UML_TIME_TRAVEL_SUPPORT)
 static int signals_blocked, signals_blocked_pending;
 #endif
 static unsigned int signals_pending;
···
 {
 	int enabled = signals_enabled;
 
-#ifdef UML_CONFIG_UML_TIME_TRAVEL_SUPPORT
+#if IS_ENABLED(CONFIG_UML_TIME_TRAVEL_SUPPORT)
 	if ((signals_blocked ||
 	     __atomic_load_n(&signals_blocked_pending, __ATOMIC_SEQ_CST)) &&
 	    (sig == SIGIO)) {
···
 		return;
 
 	signals_enabled = 1;
-#ifdef UML_CONFIG_UML_TIME_TRAVEL_SUPPORT
+#if IS_ENABLED(CONFIG_UML_TIME_TRAVEL_SUPPORT)
 	deliver_time_travel_irqs();
 #endif
 
···
 	return ret;
 }
 
-#ifdef UML_CONFIG_UML_TIME_TRAVEL_SUPPORT
+#if IS_ENABLED(CONFIG_UML_TIME_TRAVEL_SUPPORT)
 void mark_sigio_pending(void)
 {
 	/*

arch/um/os-Linux/skas/process.c

···
 		 */
 		if (time_travel_mode == TT_MODE_INFCPU ||
 		    time_travel_mode == TT_MODE_EXTERNAL) {
-			if (UML_CONFIG_UML_MAX_USERSPACE_ITERATIONS &&
+#ifdef CONFIG_UML_MAX_USERSPACE_ITERATIONS
+			if (CONFIG_UML_MAX_USERSPACE_ITERATIONS &&
 			    unscheduled_userspace_iterations++ >
-			    UML_CONFIG_UML_MAX_USERSPACE_ITERATIONS) {
+			    CONFIG_UML_MAX_USERSPACE_ITERATIONS) {
 				tt_extra_sched_jiffies += 1;
 				unscheduled_userspace_iterations = 0;
 			}
+#endif
 		}
 
 		time_travel_print_bc_msg();

arch/um/os-Linux/util.c

···
 	struct utsname host;
 
 	uname(&host);
-#ifdef UML_CONFIG_UML_X86
-# ifndef UML_CONFIG_64BIT
+#if IS_ENABLED(CONFIG_UML_X86)
+# if !IS_ENABLED(CONFIG_64BIT)
 	if (!strcmp(host.machine, "x86_64")) {
 		strcpy(machine_out, "i686");
 		return;