[PATCH v3 19/21] dept: Disable Dept within the wait_bit layer by default

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The struct wait_queue_head array, bit_wait_table[] in sched/wait_bit.c
are shared by all its users, which unfortunately vary in terms of class.
So each should've been assigned its own class to avoid false positives.

It'd better let Dept work at a higher layer than wait_bit. So disabled
Dept within the wait_bit layer by default.

It's worth noting that Dept is still working with the other struct
wait_queue_head ones that are mostly well-classified.

Signed-off-by: Byungchul Park <byungchul.park@xxxxxxx>
---
 kernel/sched/wait_bit.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kernel/sched/wait_bit.c b/kernel/sched/wait_bit.c
index 02ce292..3e5a3eb 100644
--- a/kernel/sched/wait_bit.c
+++ b/kernel/sched/wait_bit.c
@@ -3,6 +3,7 @@
  * The implementation of the wait_bit*() and related waiting APIs:
  */
 #include "sched.h"
+#include <linux/dept.h>
 
 #define WAIT_TABLE_BITS 8
 #define WAIT_TABLE_SIZE (1 << WAIT_TABLE_BITS)
@@ -246,6 +247,8 @@ void __init wait_bit_init(void)
 {
 	int i;
 
-	for (i = 0; i < WAIT_TABLE_SIZE; i++)
+	for (i = 0; i < WAIT_TABLE_SIZE; i++) {
 		init_waitqueue_head(bit_wait_table + i);
+		dept_map_nocheck(&(bit_wait_table + i)->dmap);
+	}
 }
-- 
1.9.1




[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux