From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com>,
Christoph Lameter <cl@linux.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
David Rientjes <rientjes@google.com>,
Pekka Enberg <penberg@kernel.org>,
Hyeonggon Yoo <42.hyeyoo@gmail.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
linux-mm@kvack.org, Thomas Gleixner <tglx@linutronix.de>,
Mike Galbraith <efault@gmx.de>
Subject: Re: [PATCH v2 4/5] mm/slub: convert object_map_lock to non-raw spinlock
Date: Wed, 24 Aug 2022 17:53:53 +0200 [thread overview]
Message-ID: <YwZJkexUtapTgtNJ@linutronix.de> (raw)
In-Reply-To: <20220823170400.26546-5-vbabka@suse.cz>
On 2022-08-23 19:03:59 [+0200], Vlastimil Babka wrote:
> The only remaining user of object_map_lock is list_slab_objects().
> Obtaining the lock there used to happen under slab_lock() which implied
> disabling irqs on PREEMPT_RT, thus it's a raw_spinlock. With the
> slab_lock() removed, we can convert it to a normal spinlock.
>
> Also remove the get_map()/put_map() wrappers as list_slab_objects()
> became their only remaining user.
>
> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
> Acked-by: David Rientjes <rientjes@google.com>
> Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Sebastian
next prev parent reply other threads:[~2022-08-24 15:54 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-23 17:03 [PATCH v2 0/5] mm/slub: fix validation races and cleanup locking Vlastimil Babka
2022-08-23 17:03 ` [PATCH v2 1/5] mm/slub: move free_debug_processing() further Vlastimil Babka
2022-08-23 17:03 ` [PATCH v2 2/5] mm/slub: restrict sysfs validation to debug caches and make it safe Vlastimil Babka
2022-08-24 4:41 ` Hyeonggon Yoo
2022-08-23 17:03 ` [PATCH v2 3/5] mm/slub: remove slab_lock() usage for debug operations Vlastimil Babka
2022-08-23 17:03 ` [PATCH v2 4/5] mm/slub: convert object_map_lock to non-raw spinlock Vlastimil Babka
2022-08-24 15:53 ` Sebastian Andrzej Siewior [this message]
2022-08-23 17:04 ` [PATCH v2 5/5] mm/slub: simplify __cmpxchg_double_slab() and slab_[un]lock() Vlastimil Babka
2022-08-24 10:24 ` Hyeonggon Yoo
2022-08-24 11:51 ` Vlastimil Babka
2022-08-24 12:45 ` Hyeonggon Yoo
2022-08-24 16:31 ` Sebastian Andrzej Siewior
2022-08-24 13:04 ` Hyeonggon Yoo
2022-08-25 12:41 ` Vlastimil Babka
2022-08-24 16:25 ` Sebastian Andrzej Siewior
2022-08-25 12:59 ` Vlastimil Babka
2022-08-25 7:51 ` [PATCH 6/5] slub: Make PREEMPT_RT support less convoluted Sebastian Andrzej Siewior
2022-08-25 8:41 ` Vlastimil Babka
2022-08-25 8:49 ` Hyeonggon Yoo
2022-08-25 13:16 ` [PATCH v2 0/5] mm/slub: fix validation races and cleanup locking Vlastimil Babka
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