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Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

Browse Source 
Pull kbuild updates from Michal Marek:

 - EXPORT_SYMBOL for asm source by Al Viro.

   This does bring a regression, because genksyms no longer generates
   checksums for these symbols (CONFIG_MODVERSIONS). Nick Piggin is
   working on a patch to fix this.

   Plus, we are talking about functions like strcpy(), which rarely
   change prototypes.

 - Fixes for PPC fallout of the above by Stephen Rothwell and Nick
   Piggin

 - fixdep speedup by Alexey Dobriyan.

 - preparatory work by Nick Piggin to allow architectures to build with
   -ffunction-sections, -fdata-sections and --gc-sections

 - CONFIG_THIN_ARCHIVES support by Stephen Rothwell

 - fix for filenames with colons in the initramfs source by me.

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (22 commits)
  initramfs: Escape colons in depfile
  ppc: there is no clear_pages to export
  powerpc/64: whitelist unresolved modversions CRCs
  kbuild: -ffunction-sections fix for archs with conflicting sections
  kbuild: add arch specific post-link Makefile
  kbuild: allow archs to select link dead code/data elimination
  kbuild: allow architectures to use thin archives instead of ld -r
  kbuild: Regenerate genksyms lexer
  kbuild: genksyms fix for typeof handling
  fixdep: faster CONFIG_ search
  ia64: move exports to definitions
  sparc32: debride memcpy.S a bit
  [sparc] unify 32bit and 64bit string.h
  sparc: move exports to definitions
  ppc: move exports to definitions
  arm: move exports to definitions
  s390: move exports to definitions
  m68k: move exports to definitions
  alpha: move exports to actual definitions
  x86: move exports to actual definitions
  ...
This commit is contained in:
Linus Torvalds
2016-10-14 14:26:58 -07:00
parent d4d24d2d0a 590abbdd27
commit 84d69848c9
262 changed files with 1094 additions and 1403 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/lib/checksum_32.S
View File

@@ -28,6 +28,7 @@
#include <linux/linkage.h>
#include <asm/errno.h>
#include <asm/asm.h>
#include <asm/export.h>
/*
* computes a partial checksum, e.g. for TCP/UDP fragments
@@ -251,6 +252,7 @@ ENTRY(csum_partial)
ENDPROC(csum_partial)
#endif
EXPORT_SYMBOL(csum_partial)
/*
unsigned int csum_partial_copy_generic (const char *src, char *dst,
@@ -490,3 +492,4 @@ ENDPROC(csum_partial_copy_generic)
#undef ROUND1
#endif
EXPORT_SYMBOL(csum_partial_copy_generic)

2
arch/x86/lib/clear_page_64.S
View File

@@ -1,6 +1,7 @@
#include <linux/linkage.h>
#include <asm/cpufeatures.h>
#include <asm/alternative-asm.h>
#include <asm/export.h>
/*
* Most CPUs support enhanced REP MOVSB/STOSB instructions. It is
@@ -23,6 +24,7 @@ ENTRY(clear_page)
rep stosq
ret
ENDPROC(clear_page)
EXPORT_SYMBOL(clear_page)
ENTRY(clear_page_orig)

2
arch/x86/lib/cmpxchg8b_emu.S
View File

@@ -7,6 +7,7 @@
*/
#include <linux/linkage.h>
#include <asm/export.h>
.text
@@ -48,3 +49,4 @@ ENTRY(cmpxchg8b_emu)
ret
ENDPROC(cmpxchg8b_emu)
EXPORT_SYMBOL(cmpxchg8b_emu)

2
arch/x86/lib/copy_page_64.S
View File

@@ -3,6 +3,7 @@
#include <linux/linkage.h>
#include <asm/cpufeatures.h>
#include <asm/alternative-asm.h>
#include <asm/export.h>
/*
* Some CPUs run faster using the string copy instructions (sane microcode).
@@ -17,6 +18,7 @@ ENTRY(copy_page)
rep movsq
ret
ENDPROC(copy_page)
EXPORT_SYMBOL(copy_page)
ENTRY(copy_page_regs)
subq $2*8, %rsp

8
arch/x86/lib/copy_user_64.S
View File

@@ -14,6 +14,7 @@
#include <asm/alternative-asm.h>
#include <asm/asm.h>
#include <asm/smap.h>
#include <asm/export.h>
/* Standard copy_to_user with segment limit checking */
ENTRY(_copy_to_user)
@@ -29,6 +30,7 @@ ENTRY(_copy_to_user)
"jmp copy_user_enhanced_fast_string", \
X86_FEATURE_ERMS
ENDPROC(_copy_to_user)
EXPORT_SYMBOL(_copy_to_user)
/* Standard copy_from_user with segment limit checking */
ENTRY(_copy_from_user)
@@ -44,6 +46,8 @@ ENTRY(_copy_from_user)
"jmp copy_user_enhanced_fast_string", \
X86_FEATURE_ERMS
ENDPROC(_copy_from_user)
EXPORT_SYMBOL(_copy_from_user)
.section .fixup,"ax"
/* must zero dest */
@@ -155,6 +159,7 @@ ENTRY(copy_user_generic_unrolled)
_ASM_EXTABLE(21b,50b)
_ASM_EXTABLE(22b,50b)
ENDPROC(copy_user_generic_unrolled)
EXPORT_SYMBOL(copy_user_generic_unrolled)
/* Some CPUs run faster using the string copy instructions.
* This is also a lot simpler. Use them when possible.
@@ -200,6 +205,7 @@ ENTRY(copy_user_generic_string)
_ASM_EXTABLE(1b,11b)
_ASM_EXTABLE(3b,12b)
ENDPROC(copy_user_generic_string)
EXPORT_SYMBOL(copy_user_generic_string)
/*
* Some CPUs are adding enhanced REP MOVSB/STOSB instructions.
@@ -229,6 +235,7 @@ ENTRY(copy_user_enhanced_fast_string)
_ASM_EXTABLE(1b,12b)
ENDPROC(copy_user_enhanced_fast_string)
EXPORT_SYMBOL(copy_user_enhanced_fast_string)
/*
* copy_user_nocache - Uncached memory copy with exception handling
@@ -379,3 +386,4 @@ ENTRY(__copy_user_nocache)
_ASM_EXTABLE(40b,.L_fixup_1b_copy)
_ASM_EXTABLE(41b,.L_fixup_1b_copy)
ENDPROC(__copy_user_nocache)
EXPORT_SYMBOL(__copy_user_nocache)

1
arch/x86/lib/csum-partial_64.c
View File

@@ -135,6 +135,7 @@ __wsum csum_partial(const void *buff, int len, __wsum sum)
return (__force __wsum)add32_with_carry(do_csum(buff, len),
(__force u32)sum);
}
EXPORT_SYMBOL(csum_partial);
/*
* this routine is used for miscellaneous IP-like checksums, mainly

5
arch/x86/lib/getuser.S
View File

@@ -32,6 +32,7 @@
#include <asm/thread_info.h>
#include <asm/asm.h>
#include <asm/smap.h>
#include <asm/export.h>
.text
ENTRY(__get_user_1)
@@ -44,6 +45,7 @@ ENTRY(__get_user_1)
ASM_CLAC
ret
ENDPROC(__get_user_1)
EXPORT_SYMBOL(__get_user_1)
ENTRY(__get_user_2)
add $1,%_ASM_AX
@@ -57,6 +59,7 @@ ENTRY(__get_user_2)
ASM_CLAC
ret
ENDPROC(__get_user_2)
EXPORT_SYMBOL(__get_user_2)
ENTRY(__get_user_4)
add $3,%_ASM_AX
@@ -70,6 +73,7 @@ ENTRY(__get_user_4)
ASM_CLAC
ret
ENDPROC(__get_user_4)
EXPORT_SYMBOL(__get_user_4)
ENTRY(__get_user_8)
#ifdef CONFIG_X86_64
@@ -97,6 +101,7 @@ ENTRY(__get_user_8)
ret
#endif
ENDPROC(__get_user_8)
EXPORT_SYMBOL(__get_user_8)
bad_get_user:

3
arch/x86/lib/hweight.S
View File

@@ -1,4 +1,5 @@
#include <linux/linkage.h>
#include <asm/export.h>
#include <asm/asm.h>
@@ -32,6 +33,7 @@ ENTRY(__sw_hweight32)
__ASM_SIZE(pop,) %__ASM_REG(dx)
ret
ENDPROC(__sw_hweight32)
EXPORT_SYMBOL(__sw_hweight32)
ENTRY(__sw_hweight64)
#ifdef CONFIG_X86_64
@@ -77,3 +79,4 @@ ENTRY(__sw_hweight64)
ret
#endif
ENDPROC(__sw_hweight64)
EXPORT_SYMBOL(__sw_hweight64)

4
arch/x86/lib/memcpy_64.S
View File

@@ -4,6 +4,7 @@
#include <asm/errno.h>
#include <asm/cpufeatures.h>
#include <asm/alternative-asm.h>
#include <asm/export.h>
/*
* We build a jump to memcpy_orig by default which gets NOPped out on
@@ -40,6 +41,8 @@ ENTRY(memcpy)
ret
ENDPROC(memcpy)
ENDPROC(__memcpy)
EXPORT_SYMBOL(memcpy)
EXPORT_SYMBOL(__memcpy)
/*
* memcpy_erms() - enhanced fast string memcpy. This is faster and
@@ -274,6 +277,7 @@ ENTRY(memcpy_mcsafe_unrolled)
xorq %rax, %rax
ret
ENDPROC(memcpy_mcsafe_unrolled)
EXPORT_SYMBOL_GPL(memcpy_mcsafe_unrolled)
.section .fixup, "ax"
/* Return -EFAULT for any failure */

3
arch/x86/lib/memmove_64.S
View File

@@ -8,6 +8,7 @@
#include <linux/linkage.h>
#include <asm/cpufeatures.h>
#include <asm/alternative-asm.h>
#include <asm/export.h>
#undef memmove
@@ -207,3 +208,5 @@ ENTRY(__memmove)
retq
ENDPROC(__memmove)
ENDPROC(memmove)
EXPORT_SYMBOL(__memmove)
EXPORT_SYMBOL(memmove)

3
arch/x86/lib/memset_64.S
View File

@@ -3,6 +3,7 @@
#include <linux/linkage.h>
#include <asm/cpufeatures.h>
#include <asm/alternative-asm.h>
#include <asm/export.h>
.weak memset
@@ -43,6 +44,8 @@ ENTRY(__memset)
ret
ENDPROC(memset)
ENDPROC(__memset)
EXPORT_SYMBOL(memset)
EXPORT_SYMBOL(__memset)
/*
* ISO C memset - set a memory block to a byte value. This function uses

5
arch/x86/lib/putuser.S
View File

@@ -15,6 +15,7 @@
#include <asm/errno.h>
#include <asm/asm.h>
#include <asm/smap.h>
#include <asm/export.h>
/*
@@ -43,6 +44,7 @@ ENTRY(__put_user_1)
xor %eax,%eax
EXIT
ENDPROC(__put_user_1)
EXPORT_SYMBOL(__put_user_1)
ENTRY(__put_user_2)
ENTER
@@ -55,6 +57,7 @@ ENTRY(__put_user_2)
xor %eax,%eax
EXIT
ENDPROC(__put_user_2)
EXPORT_SYMBOL(__put_user_2)
ENTRY(__put_user_4)
ENTER
@@ -67,6 +70,7 @@ ENTRY(__put_user_4)
xor %eax,%eax
EXIT
ENDPROC(__put_user_4)
EXPORT_SYMBOL(__put_user_4)
ENTRY(__put_user_8)
ENTER
@@ -82,6 +86,7 @@ ENTRY(__put_user_8)
xor %eax,%eax
EXIT
ENDPROC(__put_user_8)
EXPORT_SYMBOL(__put_user_8)
bad_put_user:
movl $-EFAULT,%eax

3
arch/x86/lib/strstr_32.c
View File

@@ -1,4 +1,5 @@
#include <linux/string.h>
#include <linux/export.h>
char *strstr(const char *cs, const char *ct)
{
@@ -28,4 +29,4 @@ __asm__ __volatile__(
: "dx", "di");
return __res;
}
EXPORT_SYMBOL(strstr);