[PATCH v14 14/28] dept: Apply sdt_might_sleep_{start,end}() to hashed-waitqueue wait

Byungchul Park
2024-05-08T10:02:59Z

Makes Dept able to track dependencies by hashed-waitqueue waits.

Signed-off-by: Byungchul Park <byungchul@sk.com>
---
include/linux/wait_bit.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/include/linux/wait_bit.h b/include/linux/wait_bit.h
index 7725b7579b78..fe89282c3e96 100644
--- a/include/linux/wait_bit.h
+++ b/include/linux/wait_bit.h
@@ -6,6 +6,7 @@
* Linux wait-bit related types and methods:
*/
#include <linux/wait.h>
+#include <linux/dept_sdt.h>

struct wait_bit_key {
void *flags;
@@ -246,6 +247,7 @@ extern wait_queue_head_t *__var_waitqueue(void *p);
struct wait_bit_queue_entry __wbq_entry; \
long __ret = ret; /* explicit shadow */ \
\
+ sdt_might_sleep_start(NULL); \
init_wait_var_entry(&__wbq_entry, var, \
exclusive ? WQ_FLAG_EXCLUSIVE : 0); \
for (;;) { \
@@ -263,6 +265,7 @@ extern wait_queue_head_t *__var_waitqueue(void *p);
cmd; \
} \
finish_wait(__wq_head, &__wbq_entry.wq_entry); \
+ sdt_might_sleep_end(); \
__out: __ret; \
})

--
2.17.1