tracing, Text Edit Lock - kprobes architecture independent support, n…

…ommu fix Impact: build fix on SH !CONFIG_MMU Stephen Rothwell reported this linux-next build failure on the SH architecture: kernel/built-in.o: In function `disable_all_kprobes': kernel/kprobes.c:1382: undefined reference to `text_mutex' [...] And observed: | Introduced by commit 4460fda ("tracing, | Text Edit Lock - kprobes architecture independent support") from the | tracing tree. text_mutex is defined in mm/memory.c which is only built | if CONFIG_MMU is defined, which is not true for sh allmodconfig. Move this lock to kernel/extable.c (which is already home to various kernel text related routines), which file is always built-in. Reported-by: Stephen Rothwell <[email protected]> Cc: Paul Mundt <[email protected]> Cc: Mathieu Desnoyers <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
CorpDK · Mar 20, 2009 · 505f2b9 · 505f2b9
1 parent 22de89b
commit 505f2b9
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Showing 2 changed files with 12 additions and 10 deletions.
diff --git a/kernel/extable.c b/kernel/extable.c
@@ -15,11 +15,21 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
+#include <linux/ftrace.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
 #include <linux/init.h>
-#include <linux/ftrace.h>
-#include <asm/uaccess.h>
+
 #include <asm/sections.h>
+#include <asm/uaccess.h>
+
+/*
+ * mutex protecting text section modification (dynamic code patching).
+ * some users need to sleep (allocating memory...) while they hold this lock.
+ *
+ * NOT exported to modules - patching kernel text is a really delicate matter.
+ */
+DEFINE_MUTEX(text_mutex);
 
 extern struct exception_table_entry __start___ex_table[];
 extern struct exception_table_entry __stop___ex_table[];

diff --git a/mm/memory.c b/mm/memory.c
@@ -101,14 +101,6 @@ int randomize_va_space __read_mostly =
 					2;
 #endif
 
-/*
- * mutex protecting text section modification (dynamic code patching).
- * some users need to sleep (allocating memory...) while they hold this lock.
- *
- * NOT exported to modules - patching kernel text is a really delicate matter.
- */
-DEFINE_MUTEX(text_mutex);
-
 static int __init disable_randmaps(char *s)
 {
 	randomize_va_space = 0;