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From: paulmck@kernel.org
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, 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, joel@joelfernandes.org,
	"Paul E. McKenney" <paulmck@kernel.org>,
	Jani Nikula <jani.nikula@linux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Chris Wilson <chris@chris-wilson.co.uk>,
	Tvrtko Ursulin <tvrtko.ursulin@intel.com>,
	intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: [PATCH tip/core/rcu 03/10] drivers/gpu: Replace rcu_swap_protected() with rcu_replace()
Date: Tue, 22 Oct 2019 12:12:08 -0700	[thread overview]
Message-ID: <20191022191215.25781-3-paulmck@kernel.org> (raw)
In-Reply-To: <20191022191136.GA25627@paulmck-ThinkPad-P72>

From: "Paul E. McKenney" <paulmck@kernel.org>

This commit replaces the use of rcu_swap_protected() with the more
intuitively appealing rcu_replace() as a step towards removing
rcu_swap_protected().

Link: https://lore.kernel.org/lkml/CAHk-=wiAsJLw1egFEE=Z7-GGtM6wcvtyytXZA1+BHqta4gg6Hw@mail.gmail.com/
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
[ paulmck: From rcu_replace() to rcu_replace_pointer() per Ingo Molnar. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: <intel-gfx@lists.freedesktop.org>
Cc: <dri-devel@lists.freedesktop.org>
---
 drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 1cdfe05..3f3e803 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -1629,7 +1629,7 @@ set_engines(struct i915_gem_context *ctx,
 		i915_gem_context_set_user_engines(ctx);
 	else
 		i915_gem_context_clear_user_engines(ctx);
-	rcu_swap_protected(ctx->engines, set.engines, 1);
+	set.engines = rcu_replace_pointer(ctx->engines, set.engines, 1);
 	mutex_unlock(&ctx->engines_mutex);
 
 	call_rcu(&set.engines->rcu, free_engines_rcu);
-- 
2.9.5


  parent reply	other threads:[~2019-10-22 19:12 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-03  1:41 [PATCH tip/core/rcu 0/9] Replace rcu_swap_protected() for v5.5 Paul E. McKenney
2019-10-03  1:43 ` [PATCH tip/core/rcu 1/9] rcu: Upgrade rcu_swap_protected() to rcu_replace() paulmck
2019-10-03 16:35   ` Mathieu Desnoyers
2019-10-03 16:52     ` Paul E. McKenney
2019-10-03 17:21       ` Mathieu Desnoyers
2019-10-03 19:09         ` Paul E. McKenney
2019-10-03 19:14           ` Mathieu Desnoyers
2019-10-03  1:43 ` [PATCH tip/core/rcu 2/9] x86/kvm/pmu: Replace rcu_swap_protected() with rcu_replace() paulmck
2019-10-03 10:14   ` Paolo Bonzini
2019-10-05 16:11     ` Paul E. McKenney
2019-10-03  1:43 ` [PATCH tip/core/rcu 3/9] drivers/gpu: " paulmck
2019-10-03  1:43 ` [PATCH tip/core/rcu 4/9] drivers/scsi: " paulmck
2019-10-04  2:09   ` Martin K. Petersen
2019-10-05 16:06     ` Paul E. McKenney
2019-10-10  2:36       ` Martin K. Petersen
2019-10-03  1:43 ` [PATCH tip/core/rcu 5/9] fs/afs: " paulmck
2019-10-03  1:43 ` [PATCH tip/core/rcu 6/9] bpf/cgroup: " paulmck
2019-10-03 17:21   ` Andrii Nakryiko
2019-10-03 20:58     ` Song Liu
2019-10-05 16:11       ` Paul E. McKenney
2019-10-03  1:43 ` [PATCH tip/core/rcu 7/9] net/core: " paulmck
2019-10-03  1:43 ` [PATCH tip/core/rcu 8/9] net/netfilter: " paulmck
2019-10-08 14:16   ` Pablo Neira Ayuso
2019-10-09 15:36     ` Paul E. McKenney
2019-10-03  1:43 ` [PATCH tip/core/rcu 9/9] net/sched: " paulmck
2019-10-03  8:38 ` [PATCH tip/core/rcu 5/9] fs/afs: " David Howells
2019-10-05 16:10   ` Paul E. McKenney
2019-10-03  8:39 ` [PATCH tip/core/rcu 1/9] rcu: Upgrade rcu_swap_protected() to rcu_replace() David Howells
2019-10-03 13:08   ` Steven Rostedt
2019-10-03 13:33     ` Paul E. McKenney
2019-10-03 13:41       ` Peter Zijlstra
2019-10-03 13:58         ` Paul E. McKenney
2019-10-03 14:01       ` Joel Fernandes
2019-10-03 16:31     ` Mathieu Desnoyers
2019-10-03 18:05       ` Peter Zijlstra
2019-10-22 19:11 ` [PATCH v2 tip/core/rcu 0/10] Replace rcu_swap_protected() for v5.5 Paul E. McKenney
2019-10-22 19:12   ` [PATCH tip/core/rcu 01/10] rcu: Upgrade rcu_swap_protected() to rcu_replace() paulmck
2019-10-22 19:12   ` [PATCH tip/core/rcu 02/10] x86/kvm/pmu: Replace rcu_swap_protected() with rcu_replace() paulmck
2019-10-22 19:12   ` paulmck [this message]
2019-10-28 12:57     ` [PATCH tip/core/rcu 03/10] drivers/gpu: " Joonas Lahtinen
2019-10-28 13:40       ` Paul E. McKenney
2019-10-22 19:12   ` [PATCH tip/core/rcu 04/10] drivers/scsi: " paulmck
2019-10-22 19:12   ` [PATCH tip/core/rcu 05/10] fs/afs: " paulmck
2019-10-22 19:12   ` [PATCH tip/core/rcu 06/10] bpf/cgroup: " paulmck
2019-10-22 19:12   ` [PATCH tip/core/rcu 07/10] net/core: " paulmck
2019-10-22 19:12   ` [PATCH tip/core/rcu 08/10] net/netfilter: " paulmck
2019-10-22 19:12   ` [PATCH tip/core/rcu 09/10] net/sched: " paulmck
2019-10-22 19:12   ` [PATCH tip/core/rcu 10/10] security/safesetid: " paulmck

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