signal.h: add linux/signal.h and asm/signal.h to UAPI compile-test coverage

linux/signal.h and asm/signal.h are currently excluded from the UAPI
compile-test because of the errors like follows:

    HDRTEST usr/include/asm/signal.h
  In file included from <command-line>:
  ./usr/include/asm/signal.h:103:9: error: unknown type name ‘size_t’
    103 |         size_t ss_size;
        |         ^~~~~~

The errors can be fixed by replacing size_t with __kernel_size_t.

Then, remove the no-header-test entries from user/include/Makefile.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/alpha/include/uapi/asm/signal.h

@@ -100,7 +100,7 @@ struct sigaction {
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 /* sigstack(2) is deprecated, and will be withdrawn in a future version

arch/arm/include/uapi/asm/signal.h

@@ -93,7 +93,7 @@ struct sigaction {
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/h8300/include/uapi/asm/signal.h

@@ -85,7 +85,7 @@ struct sigaction {
 typedef struct sigaltstack {
 	void *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/ia64/include/uapi/asm/signal.h

@@ -90,7 +90,7 @@ struct siginfo;
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/m68k/include/uapi/asm/signal.h

@@ -83,7 +83,7 @@ struct sigaction {
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif /* _UAPI_M68K_SIGNAL_H */

arch/mips/include/uapi/asm/signal.h

@@ -100,7 +100,7 @@ struct sigaction {
 /* IRIX compatible stack_t  */
 typedef struct sigaltstack {
 	void __user *ss_sp;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 	int ss_flags;
 } stack_t;
 

arch/parisc/include/uapi/asm/signal.h

@@ -67,7 +67,7 @@ struct siginfo;
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif /* !__ASSEMBLY */

arch/powerpc/include/uapi/asm/signal.h

@@ -86,7 +86,7 @@ struct sigaction {
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/s390/include/uapi/asm/signal.h

@@ -108,7 +108,7 @@ struct sigaction {
 typedef struct sigaltstack {
         void __user *ss_sp;
         int ss_flags;
-        size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 

arch/sparc/include/uapi/asm/signal.h

@@ -2,6 +2,7 @@
 #ifndef _UAPI__SPARC_SIGNAL_H
 #define _UAPI__SPARC_SIGNAL_H
 
+#include <asm/posix_types.h>
 #include <asm/sigcontext.h>
 #include <linux/compiler.h>
 
@@ -171,7 +172,7 @@ struct __old_sigaction {
 typedef struct sigaltstack {
 	void			__user *ss_sp;
 	int			ss_flags;
-	size_t			ss_size;
+	__kernel_size_t		ss_size;
 } stack_t;
 
 

arch/x86/include/uapi/asm/signal.h

@@ -104,7 +104,7 @@ struct sigaction {
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif /* __ASSEMBLY__ */

arch/xtensa/include/uapi/asm/signal.h

@@ -103,7 +103,7 @@ struct sigaction {
 typedef struct sigaltstack {
 	void *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif	/* __ASSEMBLY__ */

include/uapi/asm-generic/signal.h

@@ -85,7 +85,7 @@ struct sigaction {
 typedef struct sigaltstack {
 	void __user *ss_sp;
 	int ss_flags;
-	size_t ss_size;
+	__kernel_size_t ss_size;
 } stack_t;
 
 #endif /* __ASSEMBLY__ */

usr/include/Makefile

@@ -21,7 +21,6 @@ override c_flags = $(UAPI_CFLAGS) -Wp,-MMD,$(depfile) -I$(objtree)/usr/include
 #
 # Sorted alphabetically.
 no-header-test += asm/shmbuf.h
-no-header-test += asm/signal.h
 no-header-test += asm/ucontext.h
 no-header-test += drm/vmwgfx_drm.h
 no-header-test += linux/am437x-vpfe.h
@@ -41,7 +40,6 @@ no-header-test += linux/patchkey.h
 no-header-test += linux/phonet.h
 no-header-test += linux/reiserfs_xattr.h
 no-header-test += linux/sctp.h
-no-header-test += linux/signal.h
 no-header-test += linux/sysctl.h
 no-header-test += linux/usb/audio.h
 no-header-test += linux/v4l2-mediabus.h