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Merge branch 'cpuinit-delete' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

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Pull first stage of __cpuinit removal from Paul Gortmaker:
 "The two commits here 1) dummy out all the __cpuinit macros so that we
  no longer generate such sections, and then 2) remove all the section
  processing that we used to do for those sections.

  This makes all the __cpuinit and friends no-ops, so that we can remove
  the use cases of it at our leisure.  Expect stage 2, which does the
  tree wide removal sweep at the end of the merge window."

* 'cpuinit-delete' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  modpost: remove all traces of cpuinit/cpuexit sections
  init.h: remove __cpuinit sections from the kernel
This commit is contained in:
Linus Torvalds 2013-07-07 11:01:19 -07:00
commit 8dce5f3dee
3 changed files with 18 additions and 65 deletions
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52
scripts/mod/modpost.c
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@ -861,24 +861,23 @@ static void check_section(const char *modname, struct elf_info *elf,
#define ALL_INIT_DATA_SECTIONS \
".init.setup$", ".init.rodata$", \
".cpuinit.rodata$", ".meminit.rodata$", \
".init.data$", ".cpuinit.data$", ".meminit.data$"
".init.setup$", ".init.rodata$", ".meminit.rodata$", \
".init.data$", ".meminit.data$"
#define ALL_EXIT_DATA_SECTIONS \
".exit.data$", ".cpuexit.data$", ".memexit.data$"
".exit.data$", ".memexit.data$"
#define ALL_INIT_TEXT_SECTIONS \
".init.text$", ".cpuinit.text$", ".meminit.text$"
".init.text$", ".meminit.text$"
#define ALL_EXIT_TEXT_SECTIONS \
".exit.text$", ".cpuexit.text$", ".memexit.text$"
".exit.text$", ".memexit.text$"
#define ALL_PCI_INIT_SECTIONS \
".pci_fixup_early$", ".pci_fixup_header$", ".pci_fixup_final$", \
".pci_fixup_enable$", ".pci_fixup_resume$", \
".pci_fixup_resume_early$", ".pci_fixup_suspend$"
#define ALL_XXXINIT_SECTIONS CPU_INIT_SECTIONS, MEM_INIT_SECTIONS
#define ALL_XXXEXIT_SECTIONS CPU_EXIT_SECTIONS, MEM_EXIT_SECTIONS
#define ALL_XXXINIT_SECTIONS MEM_INIT_SECTIONS
#define ALL_XXXEXIT_SECTIONS MEM_EXIT_SECTIONS
#define ALL_INIT_SECTIONS INIT_SECTIONS, ALL_XXXINIT_SECTIONS
#define ALL_EXIT_SECTIONS EXIT_SECTIONS, ALL_XXXEXIT_SECTIONS
@ -887,11 +886,9 @@ static void check_section(const char *modname, struct elf_info *elf,
#define TEXT_SECTIONS ".text$", ".text.unlikely$"
#define INIT_SECTIONS ".init.*"
#define CPU_INIT_SECTIONS ".cpuinit.*"
#define MEM_INIT_SECTIONS ".meminit.*"
#define EXIT_SECTIONS ".exit.*"
#define CPU_EXIT_SECTIONS ".cpuexit.*"
#define MEM_EXIT_SECTIONS ".memexit.*"
/* init data sections */
@ -979,48 +976,20 @@ const struct sectioncheck sectioncheck[] = {
.mismatch = DATA_TO_ANY_EXIT,
.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },
},
/* Do not reference init code/data from cpuinit/meminit code/data */
/* Do not reference init code/data from meminit code/data */
{
.fromsec = { ALL_XXXINIT_SECTIONS, NULL },
.tosec = { INIT_SECTIONS, NULL },
.mismatch = XXXINIT_TO_SOME_INIT,
.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },
},
/* Do not reference cpuinit code/data from meminit code/data */
{
.fromsec = { MEM_INIT_SECTIONS, NULL },
.tosec = { CPU_INIT_SECTIONS, NULL },
.mismatch = XXXINIT_TO_SOME_INIT,
.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },
},
/* Do not reference meminit code/data from cpuinit code/data */
{
.fromsec = { CPU_INIT_SECTIONS, NULL },
.tosec = { MEM_INIT_SECTIONS, NULL },
.mismatch = XXXINIT_TO_SOME_INIT,
.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },
},
/* Do not reference exit code/data from cpuexit/memexit code/data */
/* Do not reference exit code/data from memexit code/data */
{
.fromsec = { ALL_XXXEXIT_SECTIONS, NULL },
.tosec = { EXIT_SECTIONS, NULL },
.mismatch = XXXEXIT_TO_SOME_EXIT,
.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },
},
/* Do not reference cpuexit code/data from memexit code/data */
{
.fromsec = { MEM_EXIT_SECTIONS, NULL },
.tosec = { CPU_EXIT_SECTIONS, NULL },
.mismatch = XXXEXIT_TO_SOME_EXIT,
.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },
},
/* Do not reference memexit code/data from cpuexit code/data */
{
.fromsec = { CPU_EXIT_SECTIONS, NULL },
.tosec = { MEM_EXIT_SECTIONS, NULL },
.mismatch = XXXEXIT_TO_SOME_EXIT,
.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },
},
/* Do not use exit code/data from init code */
{
.fromsec = { ALL_INIT_SECTIONS, NULL },
@ -1089,8 +1058,6 @@ static const struct sectioncheck *section_mismatch(
* Pattern 2:
* Many drivers utilise a *driver container with references to
* add, remove, probe functions etc.
* These functions may often be marked __cpuinit and we do not want to
* warn here.
* the pattern is identified by:
* tosec = init or exit section
* fromsec = data section
@ -1249,7 +1216,6 @@ static Elf_Sym *find_elf_symbol2(struct elf_info *elf, Elf_Addr addr,
/*
* Convert a section name to the function/data attribute
* .init.text => __init
* .cpuinit.data => __cpudata
* .memexitconst => __memconst
* etc.
*