[PATCH 15/15] seqlock: drop seqcount_ww_mutex_t

Christian König
2022-04-07T09:00:14Z

Daniel pointed out that this series removes the last user of
seqcount_ww_mutex_t, so let's drop this.

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: linux-kernel@vger.kernel.org
---
include/linux/seqlock.h | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
index 37ded6b8fee6..3926e9027947 100644
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -17,7 +17,6 @@
#include <linux/kcsan-checks.h>
#include <linux/lockdep.h>
#include <linux/mutex.h>
-#include <linux/ww_mutex.h>
#include <linux/preempt.h>
#include <linux/spinlock.h>

@@ -164,7 +163,7 @@ static inline void seqcount_lockdep_reader_access(const seqcount_t *s)
* static initializer or init function. This enables lockdep to validate
* that the write side critical section is properly serialized.
*
- * LOCKNAME: raw_spinlock, spinlock, rwlock, mutex, or ww_mutex.
+ * LOCKNAME: raw_spinlock, spinlock, rwlock or mutex
*/

/*
@@ -184,7 +183,6 @@ static inline void seqcount_lockdep_reader_access(const seqcount_t *s)
#define seqcount_spinlock_init(s, lock) seqcount_LOCKNAME_init(s, lock, spinlock)
#define seqcount_rwlock_init(s, lock) seqcount_LOCKNAME_init(s, lock, rwlock)
#define seqcount_mutex_init(s, lock) seqcount_LOCKNAME_init(s, lock, mutex)
-#define seqcount_ww_mutex_init(s, lock) seqcount_LOCKNAME_init(s, lock, ww_mutex)

/*
* SEQCOUNT_LOCKNAME() - Instantiate seqcount_LOCKNAME_t and helpers
@@ -277,7 +275,6 @@ SEQCOUNT_LOCKNAME(raw_spinlock, raw_spinlock_t, false, s->lock, raw_s
SEQCOUNT_LOCKNAME(spinlock, spinlock_t, __SEQ_RT, s->lock, spin, spin_lock(s->lock))
SEQCOUNT_LOCKNAME(rwlock, rwlock_t, __SEQ_RT, s->lock, read, read_lock(s->lock))
SEQCOUNT_LOCKNAME(mutex, struct mutex, true, s->lock, mutex, mutex_lock(s->lock))
-SEQCOUNT_LOCKNAME(ww_mutex, struct ww_mutex, true, &s->lock->base, ww_mutex, ww_mutex_lock(s->lock, NULL))

/*
* SEQCNT_LOCKNAME_ZERO - static initializer for seqcount_LOCKNAME_t
@@ -304,8 +301,7 @@ SEQCOUNT_LOCKNAME(ww_mutex, struct ww_mutex, true, &s->lock->base, ww_mu
__seqprop_case((s), raw_spinlock, prop), \
__seqprop_case((s), spinlock, prop), \
__seqprop_case((s), rwlock, prop), \
- __seqprop_case((s), mutex, prop), \
- __seqprop_case((s), ww_mutex, prop))
+ __seqprop_case((s), mutex, prop))

#define seqprop_ptr(s) __seqprop(s, ptr)
#define seqprop_sequence(s) __seqprop(s, sequence)
--
2.25.1