Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Byungchul Park <byungchul.park@lge.com>
To:     linux-kernel@vger.kernel.org
Cc:     torvalds@linux-foundation.org, damien.lemoal@opensource.wdc.com,
        linux-ide@vger.kernel.org, adilger.kernel@dilger.ca,
        linux-ext4@vger.kernel.org, mingo@redhat.com, peterz@infradead.org,
        will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org,
        joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch,
        duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org,
        tytso@mit.edu, willy@infradead.org, david@fromorbit.com,
        amir73il@gmail.com, gregkh@linuxfoundation.org,
        kernel-team@lge.com, linux-mm@kvack.org, akpm@linux-foundation.org,
        mhocko@kernel.org, minchan@kernel.org, hannes@cmpxchg.org,
        vdavydov.dev@gmail.com, sj@kernel.org, jglisse@redhat.com,
        dennis@kernel.org, cl@linux.com, penberg@kernel.org,
        rientjes@google.com, vbabka@suse.cz, ngupta@vflare.org,
        linux-block@vger.kernel.org, paolo.valente@linaro.org,
        josef@toxicpanda.com, linux-fsdevel@vger.kernel.org,
        viro@zeniv.linux.org.uk, jack@suse.cz, jlayton@kernel.org,
        dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org,
        dri-devel@lists.freedesktop.org, rodrigosiqueiramelo@gmail.com,
        melissa.srw@gmail.com, hamohammed.sa@gmail.com,
        42.hyeyoo@gmail.com, chris.p.wilson@intel.com,
        gwan-gyeong.mun@intel.com
Subject: [PATCH RFC v7 11/23] dept: Apply sdt_might_sleep_weak() to hashed-waitqueue wait
Date:   Mon,  9 Jan 2023 12:33:39 +0900
Message-Id: <1673235231-30302-12-git-send-email-byungchul.park@lge.com>
In-Reply-To: <1673235231-30302-1-git-send-email-byungchul.park@lge.com>
References: <1673235231-30302-1-git-send-email-byungchul.park@lge.com>
Precedence: bulk

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

Signed-off-by: Byungchul Park <byungchul.park@lge.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 7725b75..bad30ba 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 @@ struct wait_bit_queue_entry {
 	struct wait_bit_queue_entry __wbq_entry;			\
 	long __ret = ret; /* explicit shadow */				\
 									\
+	sdt_might_sleep_weak(NULL);					\
 	init_wait_var_entry(&__wbq_entry, var,				\
 			    exclusive ? WQ_FLAG_EXCLUSIVE : 0);		\
 	for (;;) {							\
@@ -263,6 +265,7 @@ struct wait_bit_queue_entry {
 		cmd;							\
 	}								\
 	finish_wait(__wq_head, &__wbq_entry.wq_entry);			\
+	sdt_might_sleep_finish();					\
 __out:	__ret;								\
 })
 
-- 
1.9.1