linux-kernel - [tip: locking/core] locking/ww_mutex: Move the ww_mutex definitions from <linux/mutex.h> into <linux/ww

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Date:   Tue, 17 Aug 2021 20:14:16 -0000
From:   "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: locking/core] locking/ww_mutex: Move the ww_mutex definitions
 from <linux/mutex.h> into <linux/ww_mutex.h>

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     4f1893ec8cfb4b17e3b89158a1e3e550a9a9bf3c
Gitweb:        https://git.kernel.org/tip/4f1893ec8cfb4b17e3b89158a1e3e550a9a9bf3c
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Sun, 15 Aug 2021 23:28:34 +02:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Tue, 17 Aug 2021 18:24:31 +02:00

locking/ww_mutex: Move the ww_mutex definitions from <linux/mutex.h> into <linux/ww_mutex.h>

Move the ww_mutex definitions into the ww_mutex specific header where they
belong.

Preparatory change to allow compiling ww_mutexes standalone.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Link: https://lore.kernel.org/r/20210815211304.110216293@linutronix.de
---
 include/linux/mutex.h    | 11 -----------
 include/linux/ww_mutex.h |  8 ++++++++
 2 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index 62bafee..db33675 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -20,9 +20,6 @@
 #include <linux/osq_lock.h>
 #include <linux/debug_locks.h>
 
-struct ww_class;
-struct ww_acquire_ctx;
-
 /*
  * Simple, straightforward mutexes with strict semantics:
  *
@@ -66,14 +63,6 @@ struct mutex {
 #endif
 };
 
-struct ww_mutex {
-	struct mutex base;
-	struct ww_acquire_ctx *ctx;
-#ifdef CONFIG_DEBUG_MUTEXES
-	struct ww_class *ww_class;
-#endif
-};
-
 #ifdef CONFIG_DEBUG_MUTEXES
 
 #define __DEBUG_MUTEX_INITIALIZER(lockname)				\
diff --git a/include/linux/ww_mutex.h b/include/linux/ww_mutex.h
index b77f39f..590aaa2 100644
--- a/include/linux/ww_mutex.h
+++ b/include/linux/ww_mutex.h
@@ -28,6 +28,14 @@ struct ww_class {
 	unsigned int is_wait_die;
 };
 
+struct ww_mutex {
+	struct mutex base;
+	struct ww_acquire_ctx *ctx;
+#ifdef CONFIG_DEBUG_MUTEXES
+	struct ww_class *ww_class;
+#endif
+};
+
 struct ww_acquire_ctx {
 	struct task_struct *task;
 	unsigned long stamp;