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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Joel Fernandes <joel@joelfernandes.org>
Cc: Uladzislau Rezki <urezki@gmail.com>,
	"Paul E. McKenney" <paulmck@kernel.org>,
	rcu@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com,
	dipankar@in.ibm.com, akpm@linux-foundation.org,
	mathieu.desnoyers@efficios.com, josh@joshtriplett.org,
	tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org,
	dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com,
	oleg@redhat.com
Subject: Re: [PATCH tip/core/rcu 03/17] rcu/tree: Skip entry into the page allocator for PREEMPT_RT
Date: Tue, 7 Jul 2020 11:27:07 +0200
Message-ID: <20200707092707.eos6yiq5t6h7d7ko@linutronix.de> (raw)
In-Reply-To: <20200706202949.GB233429@google.com>

On 2020-07-06 16:29:49 [-0400], Joel Fernandes wrote:
> Anyway, I think as we discussed on IRC, your proposal will work for both
> kernels while allowing us to keep the internal lock as raw.

Why can't we use the migrate_disable() and spinlock_t?

> thanks,
> 
>  - Joel

Sebastian

  reply index

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-24 20:12 [PATCH tip/core/rcu 0/17] kfree_rcu updates for v5.9 Paul E. McKenney
2020-06-24 20:12 ` [PATCH tip/core/rcu 01/17] rcu: Fix a kernel-doc warnings for "count" paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 02/17] rcu/tree: Keep kfree_rcu() awake during lock contention paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 03/17] rcu/tree: Skip entry into the page allocator for PREEMPT_RT paulmck
2020-06-30 16:45   ` Sebastian Andrzej Siewior
2020-06-30 18:35     ` Paul E. McKenney
2020-07-02 14:12       ` Sebastian Andrzej Siewior
2020-07-02 16:48         ` Paul E. McKenney
2020-07-02 20:19           ` Sebastian Andrzej Siewior
2020-07-06 21:06             ` Paul E. McKenney
2020-07-07 17:34               ` Uladzislau Rezki
2020-07-07 18:45                 ` Joel Fernandes
2020-07-08 18:48                   ` Uladzislau Rezki
2020-07-02 19:45         ` Uladzislau Rezki
2020-07-06 19:42           ` Joel Fernandes
2020-07-06 19:55             ` Uladzislau Rezki
2020-07-06 20:29               ` Joel Fernandes
2020-07-07  9:27                 ` Sebastian Andrzej Siewior [this message]
2020-07-15 13:38     ` Uladzislau Rezki
2020-07-15 14:16       ` Sebastian Andrzej Siewior
2020-07-15 14:20         ` Uladzislau Rezki
2020-06-24 20:12 ` [PATCH tip/core/rcu 04/17] rcu/tree: Repeat the monitor if any free channel is busy paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 05/17] rcu/tree: Make debug_objects logic independent of rcu_head paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 06/17] rcu/tree: Simplify KFREE_BULK_MAX_ENTR macro paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 07/17] rcu/tree: Move kfree_rcu_cpu locking/unlocking to separate functions paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 08/17] rcu/tree: Use static initializer for krc.lock paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 09/17] rcu/tree: cache specified number of objects paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 10/17] rcu/tree: Maintain separate array for vmalloc ptrs paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 11/17] rcu/tiny: support vmalloc in tiny-RCU paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 12/17] rcu: Rename *_kfree_callback/*_kfree_rcu_offset/kfree_call_* paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 13/17] mm/list_lru.c: Rename kvfree_rcu() to local variant paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 14/17] rcu: Introduce 2 arg kvfree_rcu() interface paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 15/17] rcu: Support reclaim for head-less object paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 16/17] rcu: Introduce single argument kvfree_rcu() interface paulmck
2020-06-24 20:12 ` [PATCH tip/core/rcu 17/17] lib/test_vmalloc.c: Add test cases for kvfree_rcu() paulmck

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