From mboxrd@z Thu Jan 1 00:00:00 1970 From: paulmck@kernel.org Subject: [PATCH tip/core/rcu 3/9] drivers/gpu: Replace rcu_swap_protected() with rcu_replace() Date: Wed, 2 Oct 2019 18:43:04 -0700 Message-ID: <20191003014310.13262-3-paulmck@kernel.org> References: <20191003014153.GA13156@paulmck-ThinkPad-P72> Return-path: In-Reply-To: <20191003014153.GA13156@paulmck-ThinkPad-P72> Sender: linux-kernel-owner@vger.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" , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Chris Wilson , Tvrtko Ursulin , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org From: "Paul E. McKenney" 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 Signed-off-by: Paul E. McKenney Cc: Jani Nikula Cc: Joonas Lahtinen Cc: Rodrigo Vivi Cc: David Airlie Cc: Daniel Vetter Cc: Chris Wilson Cc: Tvrtko Ursulin Cc: Cc: --- 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..c5c22c4 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(ctx->engines, set.engines, 1); mutex_unlock(&ctx->engines_mutex); call_rcu(&set.engines->rcu, free_engines_rcu); -- 2.9.5