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module: cleanup call chain.

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Fold alloc_module_percpu into percpu_modalloc().

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2013-07-03 10:06:29 +09:30
parent 8d8022e8ab
commit 9eb76d7797
1 changed files with 16 additions and 19 deletions
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35
kernel/module.c
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@ -482,23 +482,28 @@ static inline void __percpu *mod_percpu(struct module *mod)
return mod->percpu;
}
static int percpu_modalloc(struct module *mod,
unsigned long size, unsigned long align)
static int percpu_modalloc(struct module *mod, struct load_info *info)
{
Elf_Shdr *pcpusec = &info->sechdrs[info->index.pcpu];
unsigned long align = pcpusec->sh_addralign;
if (!pcpusec->sh_size)
return 0;
if (align > PAGE_SIZE) {
printk(KERN_WARNING "%s: per-cpu alignment %li > %li\n",
mod->name, align, PAGE_SIZE);
align = PAGE_SIZE;
}
mod->percpu = __alloc_reserved_percpu(size, align);
mod->percpu = __alloc_reserved_percpu(pcpusec->sh_size, align);
if (!mod->percpu) {
printk(KERN_WARNING
"%s: Could not allocate %lu bytes percpu data\n",
mod->name, size);
mod->name, (unsigned long)pcpusec->sh_size);
return -ENOMEM;
}
mod->percpu_size = size;
mod->percpu_size = pcpusec->sh_size;
return 0;
}
@ -563,10 +568,12 @@ static inline void __percpu *mod_percpu(struct module *mod)
{
return NULL;
}
static inline int percpu_modalloc(struct module *mod,
unsigned long size, unsigned long align)
static int percpu_modalloc(struct module *mod, struct load_info *info)
{
return -ENOMEM;
/* UP modules shouldn't have this section: ENOMEM isn't quite right */
if (info->sechdrs[info->index.pcpu].sh_size != 0)
return -ENOMEM;
return 0;
}
static inline void percpu_modfree(struct module *mod)
{
@ -2976,16 +2983,6 @@ static struct module *layout_and_allocate(struct load_info *info, int flags)
return mod;
}
static int alloc_module_percpu(struct module *mod, struct load_info *info)
{
Elf_Shdr *pcpusec = &info->sechdrs[info->index.pcpu];
if (!pcpusec->sh_size)
return 0;
/* We have a special allocation for this section. */
return percpu_modalloc(mod, pcpusec->sh_size, pcpusec->sh_addralign);
}
/* mod is no longer valid after this! */
static void module_deallocate(struct module *mod, struct load_info *info)
{
@ -3260,7 +3257,7 @@ static int load_module(struct load_info *info, const char __user *uargs,
#endif
/* To avoid stressing percpu allocator, do this once we're unique. */
err = alloc_module_percpu(mod, info);
err = percpu_modalloc(mod, info);
if (err)
goto unlink_mod;