[PATCH v17 15/47] dept: apply sdt_might_sleep_{start,end}() to waitqueue wait
From: Byungchul Park <byungchul@sk.com>
Date: 2025-10-02 08:13:35
Also in:
dri-devel, linux-arch, linux-block, linux-doc, linux-ext4, linux-fsdevel, linux-i2c, linux-ide, linux-media, linux-mm, linux-modules, linux-nfs, linux-rt-devel, lkml, rcu
Subsystem:
scheduler, the rest · Maintainers:
Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot, Linus Torvalds
Make dept able to track dependencies by waitqueue waits. Signed-off-by: Byungchul Park <byungchul@sk.com> --- include/linux/wait.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 09855d819418..65dd50f25e54 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h@@ -7,6 +7,7 @@ #include <linux/list.h> #include <linux/stddef.h> #include <linux/spinlock.h> +#include <linux/dept_sdt.h> #include <asm/current.h>
@@ -305,6 +306,7 @@ extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags); struct wait_queue_entry __wq_entry; \ long __ret = ret; /* explicit shadow */ \ \ + sdt_might_sleep_start(NULL); \ init_wait_entry(&__wq_entry, exclusive ? WQ_FLAG_EXCLUSIVE : 0); \ for (;;) { \ long __int = prepare_to_wait_event(&wq_head, &__wq_entry, state);\
@@ -323,6 +325,7 @@ extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags); break; \ } \ finish_wait(&wq_head, &__wq_entry); \ + sdt_might_sleep_end(); \ __out: __ret; \ })
--
2.17.1