summaryrefslogtreecommitdiff
path: root/kernel/jump_label.c
diff options
context:
space:
mode:
authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2011-06-21 10:35:55 +0800
committerSteven Rostedt <rostedt@goodmis.org>2011-06-29 09:59:17 -0400
commit140fe3b1ab9c082182ef13359fab4ddba95c24c3 (patch)
treee59debeb1aea1650fd490b0264f66b4f70a26aca /kernel/jump_label.c
parentdebf1d4948bccf58fa172acb1a7306792d77705d (diff)
downloadlinux-sh-140fe3b1ab9c082182ef13359fab4ddba95c24c3.tar.gz
jump_label: Fix jump_label update for modules
The jump labels entries for modules do not stop at __stop__jump_table, but after mod->jump_entries + mod_num_jump_entries. By checking the wrong end point, module trace events never get enabled. Cc: Ingo Molnar <mingo@elte.hu> Acked-by: Jason Baron <jbaron@redhat.com> Tested-by: Avi Kivity <avi@redhat.com> Tested-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Link: http://lkml.kernel.org/r/4E00038B.2060404@cn.fujitsu.com Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/jump_label.c')
-rw-r--r--kernel/jump_label.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index fa27e750dbc0..a8ce45097f3d 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -375,15 +375,19 @@ int jump_label_text_reserved(void *start, void *end)
static void jump_label_update(struct jump_label_key *key, int enable)
{
- struct jump_entry *entry = key->entries;
-
- /* if there are no users, entry can be NULL */
- if (entry)
- __jump_label_update(key, entry, __stop___jump_table, enable);
+ struct jump_entry *entry = key->entries, *stop = __stop___jump_table;
#ifdef CONFIG_MODULES
+ struct module *mod = __module_address((jump_label_t)key);
+
__jump_label_mod_update(key, enable);
+
+ if (mod)
+ stop = mod->jump_entries + mod->num_jump_entries;
#endif
+ /* if there are no users, entry can be NULL */
+ if (entry)
+ __jump_label_update(key, entry, stop, enable);
}
#endif