From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: neilb@suse.de, peterz@infradead.org, mingo@redhat.com,
will@kernel.org, longman@redhat.com, boqun.feng@gmail.com,
tglx@linutronix.de, bigeasy@linutronix.de
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH 14/17] slub: Add slab_page_lock
Date: Fri, 9 Apr 2021 03:51:28 +0100 [thread overview]
Message-ID: <20210409025131.4114078-15-willy@infradead.org> (raw)
In-Reply-To: <20210409025131.4114078-1-willy@infradead.org>
Allow lockdep to track slub's page bit spin lock.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
mm/slub.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 9c0e26ddf300..2ed2abe080ac 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -346,19 +346,21 @@ static inline unsigned int oo_objects(struct kmem_cache_order_objects x)
return x.x & OO_MASK;
}
+static DEFINE_SPLIT_LOCK(slab_page_lock);
+
/*
* Per slab locking using the pagelock
*/
static __always_inline void slab_lock(struct page *page)
{
VM_BUG_ON_PAGE(PageTail(page), page);
- bit_spin_lock(PG_locked, &page->flags);
+ bit_spin_lock(PG_locked, &page->flags, &slab_page_lock);
}
static __always_inline void slab_unlock(struct page *page)
{
VM_BUG_ON_PAGE(PageTail(page), page);
- __bit_spin_unlock(PG_locked, &page->flags);
+ __bit_spin_unlock(PG_locked, &page->flags, &slab_page_lock);
}
/* Interrupts must be disabled (for the fallback code to work right) */
--
2.30.2
next prev parent reply other threads:[~2021-04-09 3:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-09 2:51 [PATCH 00/17] Provide lockdep tracking for bit spin locks Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 01/17] x86: Rename split_lock_init to sld_init Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 02/17] locking: Add split_lock Matthew Wilcox (Oracle)
2021-04-12 14:29 ` Thomas Gleixner
2021-04-12 14:45 ` Matthew Wilcox
2021-04-12 15:01 ` Thomas Gleixner
2021-05-11 7:46 ` Peter Zijlstra
2021-04-09 2:51 ` [PATCH 03/17] bit_spinlock: Prepare for split_locks Matthew Wilcox (Oracle)
2021-04-09 14:32 ` Theodore Ts'o
2021-04-09 14:35 ` Matthew Wilcox
2021-04-09 14:55 ` Theodore Ts'o
2021-04-09 2:51 ` [PATCH 04/17] hlist_bl: " Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 05/17] dm-snap: Add dm_exceptional_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 06/17] dcache: Add d_hash_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 07/17] fscache: Add cookie_hash_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 08/17] gfs2: Add qd_hash_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 09/17] mbcache: Add mb_cache_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 10/17] hlist_bl: Make the split_lock parameter mandatory Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 11/17] s390: Add airq_iv_lock Matthew Wilcox (Oracle)
2021-04-09 6:18 ` kernel test robot
2021-04-09 13:20 ` Matthew Wilcox
2021-04-09 2:51 ` [PATCH 12/17] zram: Add zram_table_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 13/17] jbd2: Add jbd2_jh_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` Matthew Wilcox (Oracle) [this message]
2021-04-09 2:51 ` [PATCH 15/17] zsmalloc: Add zs_pin_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 16/17] rhashtable: Convert to split_lock Matthew Wilcox (Oracle)
2021-04-09 2:51 ` [PATCH 17/17] bit_spinlock: Track bit spin locks with lockdep Matthew Wilcox (Oracle)
2021-04-09 6:37 ` kernel test robot
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