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module: reorder struct module to save space on 64 bit builds

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reorder struct module to save space on 64 bit builds.
saves 1 cacheline_size  (128 on default x86_64 & 64 on AMD
Opteron/athlon) when CONFIG_MODULE_UNLOAD=y.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Richard Kennedy 2008-07-22 19:24:26 -05:00 committed by Rusty Russell
parent dafd0940c9
commit af5406895a
1 changed files with 22 additions and 20 deletions
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42
include/linux/module.h
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@ -249,27 +249,28 @@ struct module
/* Exported symbols */
const struct kernel_symbol *syms;
unsigned int num_syms;
const unsigned long *crcs;
unsigned int num_syms;
/* GPL-only exported symbols. */
const struct kernel_symbol *gpl_syms;
unsigned int num_gpl_syms;
const struct kernel_symbol *gpl_syms;
const unsigned long *gpl_crcs;
/* unused exported symbols. */
const struct kernel_symbol *unused_syms;
unsigned int num_unused_syms;
const unsigned long *unused_crcs;
unsigned int num_unused_syms;
/* GPL-only, unused exported symbols. */
const struct kernel_symbol *unused_gpl_syms;
unsigned int num_unused_gpl_syms;
const struct kernel_symbol *unused_gpl_syms;
const unsigned long *unused_gpl_crcs;
/* symbols that will be GPL-only in the near future. */
const struct kernel_symbol *gpl_future_syms;
unsigned int num_gpl_future_syms;
const unsigned long *gpl_future_crcs;
unsigned int num_gpl_future_syms;
/* Exception table */
unsigned int num_exentries;
@ -300,23 +301,9 @@ struct module
#ifdef CONFIG_GENERIC_BUG
/* Support for BUG */
unsigned num_bugs;
struct list_head bug_list;
struct bug_entry *bug_table;
unsigned num_bugs;
#endif
#ifdef CONFIG_MODULE_UNLOAD
/* Reference counts */
struct module_ref ref[NR_CPUS];
/* What modules depend on me? */
struct list_head modules_which_use_me;
/* Who is waiting for us to be unloaded */
struct task_struct *waiter;
/* Destruction function. */
void (*exit)(void);
#endif
#ifdef CONFIG_KALLSYMS
@ -342,6 +329,21 @@ struct module
struct marker *markers;
unsigned int num_markers;
#endif
#ifdef CONFIG_MODULE_UNLOAD
/* What modules depend on me? */
struct list_head modules_which_use_me;
/* Who is waiting for us to be unloaded */
struct task_struct *waiter;
/* Destruction function. */
void (*exit)(void);
/* Reference counts */
struct module_ref ref[NR_CPUS];
#endif
};
#ifndef MODULE_ARCH_INIT
#define MODULE_ARCH_INIT {}