linux-kernel - [PATCH RFC v5 19/21] dept: Add nocheck version of init

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1647397593-16747-20-git-send-email-byungchul.park@lge.com>
Date:   Wed, 16 Mar 2022 11:26:31 +0900
From:   Byungchul Park <byungchul.park@....com>
To:     torvalds@...ux-foundation.org
Cc:     damien.lemoal@...nsource.wdc.com, linux-ide@...r.kernel.org,
        adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        mingo@...hat.com, linux-kernel@...r.kernel.org,
        peterz@...radead.org, will@...nel.org, tglx@...utronix.de,
        rostedt@...dmis.org, joel@...lfernandes.org, sashal@...nel.org,
        daniel.vetter@...ll.ch, chris@...is-wilson.co.uk,
        duyuyang@...il.com, johannes.berg@...el.com, tj@...nel.org,
        tytso@....edu, willy@...radead.org, david@...morbit.com,
        amir73il@...il.com, bfields@...ldses.org,
        gregkh@...uxfoundation.org, kernel-team@....com,
        linux-mm@...ck.org, akpm@...ux-foundation.org, mhocko@...nel.org,
        minchan@...nel.org, hannes@...xchg.org, vdavydov.dev@...il.com,
        sj@...nel.org, jglisse@...hat.com, dennis@...nel.org, cl@...ux.com,
        penberg@...nel.org, rientjes@...gle.com, vbabka@...e.cz,
        ngupta@...are.org, linux-block@...r.kernel.org,
        paolo.valente@...aro.org, josef@...icpanda.com,
        linux-fsdevel@...r.kernel.org, viro@...iv.linux.org.uk,
        jack@...e.cz, jack@...e.com, jlayton@...nel.org,
        dan.j.williams@...el.com, hch@...radead.org, djwong@...nel.org,
        dri-devel@...ts.freedesktop.org, airlied@...ux.ie,
        rodrigosiqueiramelo@...il.com, melissa.srw@...il.com,
        hamohammed.sa@...il.com
Subject: [PATCH RFC v5 19/21] dept: Add nocheck version of init_completion()

For completions who don't want to get tracked by Dept, added
init_completion_nocheck() to disable Dept on it.

Signed-off-by: Byungchul Park <byungchul.park@....com>
---
 include/linux/completion.h | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/include/linux/completion.h b/include/linux/completion.h
index 76b4a2d..874cd39 100644
--- a/include/linux/completion.h
+++ b/include/linux/completion.h
@@ -30,6 +30,7 @@ struct completion {
 };
 
 #ifdef CONFIG_DEPT
+#define dept_wfc_nocheck(m)			dept_map_nocheck(m)
 #define dept_wfc_init(m, k, s, n)		dept_map_init(m, k, s, n)
 #define dept_wfc_reinit(m)			dept_map_reinit(m)
 #define dept_wfc_wait(m, ip)						\
@@ -41,6 +42,7 @@ struct completion {
 #define dept_wfc_enter(m, ip)			dept_ecxt_enter(m, 1UL, ip, "completion_context_enter", "complete", 0)
 #define dept_wfc_exit(m, ip)			dept_ecxt_exit(m, 1UL, ip)
 #else
+#define dept_wfc_nocheck(m)			do { } while (0)
 #define dept_wfc_init(m, k, s, n)		do { (void)(n); (void)(k); } while (0)
 #define dept_wfc_reinit(m)			do { } while (0)
 #define dept_wfc_wait(m, ip)			do { } while (0)
@@ -55,10 +57,11 @@ struct completion {
 #define WFC_DEPT_MAP_INIT(work)
 #endif
 
+#define init_completion_nocheck(x) __init_completion(x, NULL, #x, false)
 #define init_completion(x)					\
 	do {							\
 		static struct dept_key __dkey;			\
-		__init_completion(x, &__dkey, #x);		\
+		__init_completion(x, &__dkey, #x, true);	\
 	} while (0)
 
 #define init_completion_map(x, m) init_completion(x)
@@ -117,10 +120,15 @@ static inline void complete_release(struct completion *x) {}
  */
 static inline void __init_completion(struct completion *x,
 				     struct dept_key *dkey,
-				     const char *name)
+				     const char *name, bool check)
 {
 	x->done = 0;
-	dept_wfc_init(&x->dmap, dkey, 0, name);
+
+	if (check)
+		dept_wfc_init(&x->dmap, dkey, 0, name);
+	else
+		dept_wfc_nocheck(&x->dmap);
+
 	init_swait_queue_head(&x->wait);
 }
 
-- 
1.9.1