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authorRusty Russell <rusty@rustcorp.com.au>2010-08-05 12:59:07 -0600
committerRusty Russell <rusty@rustcorp.com.au>2010-08-05 12:59:08 +0930
commiteded41c1c6466081e0eb00d38719c6e6ee81a5d4 (patch)
treed4c015b489b57503af437fe385c4fc07db232ad6 /kernel
parentd6df72a06e067139d491da4a9d14d92ad39e7a50 (diff)
downloadvexpress-lsk-eded41c1c6466081e0eb00d38719c6e6ee81a5d4.tar.gz
module: kallsyms functions take struct load_info
Simple refactor causes us to lift struct definition to top of file. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/module.c68
1 files changed, 29 insertions, 39 deletions
diff --git a/kernel/module.c b/kernel/module.c
index ab07f67de99..79c4d6f69dd 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -110,6 +110,16 @@ int unregister_module_notifier(struct notifier_block * nb)
}
EXPORT_SYMBOL(unregister_module_notifier);
+struct load_info {
+ Elf_Ehdr *hdr;
+ unsigned long len;
+ Elf_Shdr *sechdrs;
+ char *secstrings, *args, *strtab;
+ struct {
+ unsigned int sym, str, mod, vers, info, pcpu;
+ } index;
+};
+
/* We require a truly strong try_module_get(): 0 means failure due to
ongoing or failed initialization etc. */
static inline int strong_try_module_get(struct module *mod)
@@ -1909,11 +1919,10 @@ static int is_exported(const char *name, unsigned long value,
}
/* As per nm */
-static char elf_type(const Elf_Sym *sym,
- Elf_Shdr *sechdrs,
- const char *secstrings,
- struct module *mod)
+static char elf_type(const Elf_Sym *sym, const struct load_info *info)
{
+ const Elf_Shdr *sechdrs = info->sechdrs;
+
if (ELF_ST_BIND(sym->st_info) == STB_WEAK) {
if (ELF_ST_TYPE(sym->st_info) == STT_OBJECT)
return 'v';
@@ -1943,8 +1952,10 @@ static char elf_type(const Elf_Sym *sym,
else
return 'b';
}
- if (strstarts(secstrings + sechdrs[sym->st_shndx].sh_name, ".debug"))
+ if (strstarts(info->secstrings + sechdrs[sym->st_shndx].sh_name,
+ ".debug")) {
return 'n';
+ }
return '?';
}
@@ -2021,35 +2032,30 @@ static unsigned long layout_symtab(struct module *mod,
return symoffs;
}
-static void add_kallsyms(struct module *mod,
- Elf_Shdr *sechdrs,
- unsigned int shnum,
- unsigned int symindex,
- unsigned int strindex,
+static void add_kallsyms(struct module *mod, struct load_info *info,
unsigned long symoffs,
unsigned long stroffs,
- const char *secstrings,
unsigned long *strmap)
{
unsigned int i, ndst;
const Elf_Sym *src;
Elf_Sym *dst;
char *s;
+ Elf_Shdr *symsec = &info->sechdrs[info->index.sym];
- mod->symtab = (void *)sechdrs[symindex].sh_addr;
- mod->num_symtab = sechdrs[symindex].sh_size / sizeof(Elf_Sym);
- mod->strtab = (void *)sechdrs[strindex].sh_addr;
+ mod->symtab = (void *)symsec->sh_addr;
+ mod->num_symtab = symsec->sh_size / sizeof(Elf_Sym);
+ mod->strtab = info->strtab;
/* Set types up while we still have access to sections. */
for (i = 0; i < mod->num_symtab; i++)
- mod->symtab[i].st_info
- = elf_type(&mod->symtab[i], sechdrs, secstrings, mod);
+ mod->symtab[i].st_info = elf_type(&mod->symtab[i], info);
mod->core_symtab = dst = mod->module_core + symoffs;
src = mod->symtab;
*dst = *src;
for (ndst = i = 1; i < mod->num_symtab; ++i, ++src) {
- if (!is_core_symbol(src, sechdrs, shnum))
+ if (!is_core_symbol(src, info->sechdrs, info->hdr->e_shnum))
continue;
dst[ndst] = *src;
dst[ndst].st_name = bitmap_weight(strmap, dst[ndst].st_name);
@@ -2058,7 +2064,7 @@ static void add_kallsyms(struct module *mod,
mod->core_num_syms = ndst;
mod->core_strtab = s = mod->module_core + stroffs;
- for (*s = 0, i = 1; i < sechdrs[strindex].sh_size; ++i)
+ for (*s = 0, i = 1; i < info->sechdrs[info->index.str].sh_size; ++i)
if (test_bit(i, strmap))
*++s = mod->strtab[i];
}
@@ -2075,15 +2081,10 @@ static inline unsigned long layout_symtab(struct module *mod,
return 0;
}
-static inline void add_kallsyms(struct module *mod,
- Elf_Shdr *sechdrs,
- unsigned int shnum,
- unsigned int symindex,
- unsigned int strindex,
- unsigned long symoffs,
- unsigned long stroffs,
- const char *secstrings,
- const unsigned long *strmap)
+static void add_kallsyms(struct module *mod, struct load_info *info,
+ unsigned long symoffs,
+ unsigned long stroffs,
+ unsigned long *strmap)
{
}
#endif /* CONFIG_KALLSYMS */
@@ -2148,16 +2149,6 @@ static inline void kmemleak_load_module(struct module *mod, Elf_Ehdr *hdr,
}
#endif
-struct load_info {
- Elf_Ehdr *hdr;
- unsigned long len;
- Elf_Shdr *sechdrs;
- char *secstrings, *args, *strtab;
- struct {
- unsigned int sym, str, mod, vers, info, pcpu;
- } index;
-};
-
/* Sets info->hdr and info->len. */
static int copy_and_check(struct load_info *info, const void __user *umod, unsigned long len)
{
@@ -2623,8 +2614,7 @@ static noinline struct module *load_module(void __user *umod,
percpu_modcopy(mod, (void *)info.sechdrs[info.index.pcpu].sh_addr,
info.sechdrs[info.index.pcpu].sh_size);
- add_kallsyms(mod, info.sechdrs, info.hdr->e_shnum, info.index.sym, info.index.str,
- symoffs, stroffs, info.secstrings, strmap);
+ add_kallsyms(mod, &info, symoffs, stroffs, strmap);
kfree(strmap);
strmap = NULL;