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tracing: Fix compile error in module tracepoints when MODULE_UNLOAD not set 

If modules are configured in the build but unloading of modules is not,
then the refcnt is not defined. Place the get/put module tracepoints
under CONFIG_MODULE_UNLOAD since it references this field in the module
structure.

As a side-effect, this patch also reduces the code when MODULE_UNLOAD
is not set, because these unused tracepoints are not created.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2010-03-29 14:25:18 -04:00 committed by Steven Rostedt
parent ae832d1e03
commit eb0c53771f
2 changed files with 7 additions and 2 deletions
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4
include/trace/events/module.h
View File

@ -51,6 +51,9 @@ TRACE_EVENT(module_free,
TP_printk("%s", __get_str(name))
);
#ifdef CONFIG_MODULE_UNLOAD
/* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
DECLARE_EVENT_CLASS(module_refcnt,
TP_PROTO(struct module *mod, unsigned long ip),
@ -86,6 +89,7 @@ DEFINE_EVENT(module_refcnt, module_put,
TP_ARGS(mod, ip)
);
#endif /* CONFIG_MODULE_UNLOAD */
TRACE_EVENT(module_request,

5
kernel/module.c
View File

@ -59,8 +59,6 @@
#define CREATE_TRACE_POINTS
#include <trace/events/module.h>
EXPORT_TRACEPOINT_SYMBOL(module_get);
#if 0
#define DEBUGP printk
#else
@ -467,6 +465,9 @@ MODINFO_ATTR(srcversion);
static char last_unloaded_module[MODULE_NAME_LEN+1];
#ifdef CONFIG_MODULE_UNLOAD
EXPORT_TRACEPOINT_SYMBOL(module_get);
/* Init the unload section of the module. */
static void module_unload_init(struct module *mod)
{