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module: move __module_get and try_module_get() out of line.
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With the preempt, tracepoint and everything, it's getting a bit
chubby.  For an Ubuntu-based config:

Before:
	$ size -t `find * -name '*.ko'` | grep TOTAL
	56199906        3870760	1606616	61677282	3ad1ee2	(TOTALS)
	$ size vmlinux
	   text	   data	    bss	    dec	    hex	filename
	8509342	 850368	3358720	12718430	 c2115e	vmlinux

After:
	$ size -t `find * -name '*.ko'` | grep TOTAL
	56183760	3867892	1606616	61658268	3acd49c	(TOTALS)
	$ size vmlinux
	   text	   data	    bss	    dec	    hex	filename
	8501842	 849088	3358720	12709650	 c1ef12	vmlinux

Signed-off-by: Steven Rostedt <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Signed-off-by: Rusty Russell <[email protected]> (made all out-of-line)
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rostedt authored and rustyrussell committed Mar 26, 2012
1 parent 026cee0 commit d53799b
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Showing 2 changed files with 34 additions and 28 deletions.
32 changes: 4 additions & 28 deletions include/linux/module.h
Original file line number Diff line number Diff line change
Expand Up @@ -21,8 +21,6 @@
#include <linux/percpu.h>
#include <asm/module.h>

#include <trace/events/module.h>

/* Not Yet Implemented */
#define MODULE_SUPPORTED_DEVICE(name)

Expand Down Expand Up @@ -452,33 +450,11 @@ void symbol_put_addr(void *addr);

/* Sometimes we know we already have a refcount, and it's easier not
to handle the error case (which only happens with rmmod --wait). */
static inline void __module_get(struct module *module)
{
if (module) {
preempt_disable();
__this_cpu_inc(module->refptr->incs);
trace_module_get(module, _THIS_IP_);
preempt_enable();
}
}

static inline int try_module_get(struct module *module)
{
int ret = 1;

if (module) {
preempt_disable();
extern void __module_get(struct module *module);

if (likely(module_is_live(module))) {
__this_cpu_inc(module->refptr->incs);
trace_module_get(module, _THIS_IP_);
} else
ret = 0;

preempt_enable();
}
return ret;
}
/* This is the Right Way to get a module: if it fails, it's being removed,
* so pretend it's not there. */
extern bool try_module_get(struct module *module);

extern void module_put(struct module *module);

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30 changes: 30 additions & 0 deletions kernel/module.c
Original file line number Diff line number Diff line change
Expand Up @@ -904,6 +904,36 @@ static ssize_t show_refcnt(struct module_attribute *mattr,
static struct module_attribute modinfo_refcnt =
__ATTR(refcnt, 0444, show_refcnt, NULL);

void __module_get(struct module *module)
{
if (module) {
preempt_disable();
__this_cpu_inc(module->refptr->incs);
trace_module_get(module, _RET_IP_);
preempt_enable();
}
}
EXPORT_SYMBOL(__module_get);

bool try_module_get(struct module *module)
{
bool ret = true;

if (module) {
preempt_disable();

if (likely(module_is_live(module))) {
__this_cpu_inc(module->refptr->incs);
trace_module_get(module, _RET_IP_);
} else
ret = false;

preempt_enable();
}
return ret;
}
EXPORT_SYMBOL(try_module_get);

void module_put(struct module *module)
{
if (module) {
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