Merge branch 'sparc-Suppressing-version-generation-failed-warnings-in-sparc'

Nagarathnam Muthusamy says:

====================
sparc: Suppressing version generation failed warnings in sparc

Compiling the sparc build of upstream kernel generates lots of warnings
regarding version generation failure for functions defined in assembly files.
This can be easily suppressed by adding those function prototypes to
asm/asm-prototypes.h as in powerpc architecture. The following series of patches
aims to clean the following warnings.

WARNING: EXPORT symbol "atomic_add" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "xor_niagara_4" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "atomic_sub_return" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "atomic64_sub" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "xor_vis_3" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "atomic_xor" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "sun4v_niagara2_getperf" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "atomic64_fetch_xor" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "atomic_fetch_xor" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "__bzero" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "atomic64_fetch_and" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "raw_copy_to_user" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "__flushw_user" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "sun4v_niagara2_setperf" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "__arch_hweight64" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "__ffs" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "prom_root_node" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "csum_partial_copy_nocheck" [vmlinux] version generation
failed, symbol will not be versioned.
WARNING: EXPORT symbol "memcpy" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "atomic_fetch_or" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "xor_vis_4" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "__arch_hweight32" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "ffs" [vmlinux] version generation failed, symbol will not be
versioned.
WARNING: EXPORT symbol "atomic_and" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "xor_niagara_3" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "atomic64_and" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "real_hard_smp_processor_id" [vmlinux] version generation
failed, symbol will not be versioned.
WARNING: EXPORT symbol "clear_user_page" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "memmove" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "raw_copy_from_user" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "atomic64_add_return" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "__memscan_generic" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "atomic_sub" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "__memscan_zero" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "atomic64_add" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "strncmp" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "atomic64_fetch_sub" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "xor_vis_5" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "ip_fast_csum" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "test_and_change_bit" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "__arch_hweight8" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "strlen" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "xor_niagara_2" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "atomic64_fetch_or" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "atomic64_or" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "atomic_fetch_sub" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "atomic_fetch_add" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "clear_bit" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "sun4v_mach_set_watchdog" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "set_bit" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "__csum_partial_copy_from_user" [vmlinux] version generation
failed, symbol will not be versioned.
WARNING: EXPORT symbol "memset" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "__csum_partial_copy_to_user" [vmlinux] version generation
failed, symbol will not be versioned.
WARNING: EXPORT symbol "atomic64_fetch_add" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "change_bit" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "__clear_user" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "atomic64_sub_return" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "__arch_hweight16" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "tlb_type" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "VISenter" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "test_and_set_bit" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "xor_niagara_5" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "_clear_page" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "xor_vis_2" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "atomic64_xor" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "test_and_clear_bit" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "csum_partial" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "atomic_fetch_and" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "copy_user_page" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "sun4v_chip_type" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "raw_copy_in_user" [vmlinux] version generation failed, symbol
will not be versioned.
WARNING: EXPORT symbol "memcmp" [vmlinux] version generation failed, symbol will not
be versioned.
WARNING: EXPORT symbol "atomic_add_return" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "atomic_or" [vmlinux] version generation failed, symbol will
not be versioned.
WARNING: EXPORT symbol "atomic64_dec_if_positive" [vmlinux] version generation
failed, symbol will not be versioned.
WARNING: EXPORT symbol "sun4v_niagara_setperf" [vmlinux] version generation failed,
symbol will not be versioned.
WARNING: EXPORT symbol "sun4v_niagara_getperf" [vmlinux] version generation failed,
symbol will not be versioned.

With the fix, all these warnings will be removed during compilation.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/asm-prototypes.h

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved.
+ */
+
+#include <asm/xor.h>
+#include <asm/checksum.h>
+#include <asm/trap_block.h>
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+#include <asm/ftrace.h>
+#include <asm/cacheflush.h>
+#include <asm/oplib.h>
+#include <linux/atomic.h>
+
+void *__memscan_zero(void *, size_t);
+void *__memscan_generic(void *, int, size_t);
+void *__bzero(void *, size_t);
+void VISenter(void); /* Dummy prototype to supress warning */
+#undef memcpy
+#undef memset
+void *memcpy(void *dest, const void *src, size_t n);
+void *memset(void *s, int c, size_t n);
+typedef int TItype __attribute__((mode(TI)));
+TItype __multi3(TItype a, TItype b);

arch/sparc/lib/atomic_64.S

@@ -62,19 +62,23 @@ ENTRY(atomic_fetch_##op) /* %o0 = increment, %o1 = atomic_ptr */	\
 ENDPROC(atomic_fetch_##op);						\
 EXPORT_SYMBOL(atomic_fetch_##op);
 
-#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op)
+ATOMIC_OP(add)
+ATOMIC_OP_RETURN(add)
+ATOMIC_FETCH_OP(add)
 
-ATOMIC_OPS(add)
-ATOMIC_OPS(sub)
+ATOMIC_OP(sub)
+ATOMIC_OP_RETURN(sub)
+ATOMIC_FETCH_OP(sub)
 
-#undef ATOMIC_OPS
-#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op)
+ATOMIC_OP(and)
+ATOMIC_FETCH_OP(and)
 
-ATOMIC_OPS(and)
-ATOMIC_OPS(or)
-ATOMIC_OPS(xor)
+ATOMIC_OP(or)
+ATOMIC_FETCH_OP(or)
+
+ATOMIC_OP(xor)
+ATOMIC_FETCH_OP(xor)
 
-#undef ATOMIC_OPS
 #undef ATOMIC_FETCH_OP
 #undef ATOMIC_OP_RETURN
 #undef ATOMIC_OP
@@ -124,19 +128,23 @@ ENTRY(atomic64_fetch_##op) /* %o0 = increment, %o1 = atomic_ptr */	\
 ENDPROC(atomic64_fetch_##op);						\
 EXPORT_SYMBOL(atomic64_fetch_##op);
 
-#define ATOMIC64_OPS(op) ATOMIC64_OP(op) ATOMIC64_OP_RETURN(op) ATOMIC64_FETCH_OP(op)
+ATOMIC64_OP(add)
+ATOMIC64_OP_RETURN(add)
+ATOMIC64_FETCH_OP(add)
+
+ATOMIC64_OP(sub)
+ATOMIC64_OP_RETURN(sub)
+ATOMIC64_FETCH_OP(sub)
 
-ATOMIC64_OPS(add)
-ATOMIC64_OPS(sub)
+ATOMIC64_OP(and)
+ATOMIC64_FETCH_OP(and)
 
-#undef ATOMIC64_OPS
-#define ATOMIC64_OPS(op) ATOMIC64_OP(op) ATOMIC64_FETCH_OP(op)
+ATOMIC64_OP(or)
+ATOMIC64_FETCH_OP(or)
 
-ATOMIC64_OPS(and)
-ATOMIC64_OPS(or)
-ATOMIC64_OPS(xor)
+ATOMIC64_OP(xor)
+ATOMIC64_FETCH_OP(xor)
 
-#undef ATOMIC64_OPS
 #undef ATOMIC64_FETCH_OP
 #undef ATOMIC64_OP_RETURN
 #undef ATOMIC64_OP

arch/sparc/lib/checksum_64.S

@@ -38,6 +38,7 @@ csum_partial_fix_alignment:
 
 	.align		32
 	.globl		csum_partial
+	.type		csum_partial,#function
 	EXPORT_SYMBOL(csum_partial)
 csum_partial:		/* %o0=buff, %o1=len, %o2=sum */
 	prefetch	[%o0 + 0x000], #n_reads

arch/sparc/lib/csum_copy.S

@@ -65,6 +65,7 @@
 	 add		%o5, %o4, %o4
 
 	.globl		FUNC_NAME
+	.type		FUNC_NAME,#function
 	EXPORT_SYMBOL(FUNC_NAME)
 FUNC_NAME:		/* %o0=src, %o1=dst, %o2=len, %o3=sum */
 	LOAD(prefetch, %o0 + 0x000, #n_reads)

arch/sparc/lib/memscan_64.S

@@ -14,6 +14,8 @@
 	.text
 	.align	32
 	.globl		__memscan_zero, __memscan_generic
+	.type		__memscan_zero,#function
+	.type		__memscan_generic,#function
 	.globl		memscan
 	EXPORT_SYMBOL(__memscan_zero)
 	EXPORT_SYMBOL(__memscan_generic)

arch/sparc/lib/memset.S

@@ -63,6 +63,7 @@
 __bzero_begin:
 
 	.globl	__bzero
+	.type	__bzero,#function
 	.globl	memset
 	EXPORT_SYMBOL(__bzero)
 	EXPORT_SYMBOL(memset)