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From: Marco Crivellari <marco.crivellari@suse.com>
To: linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org,
	dri-devel@lists.freedesktop.org
Cc: Tejun Heo <tj@kernel.org>, Lai Jiangshan <jiangshanlai@gmail.com>,
	Frederic Weisbecker <frederic@kernel.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Marco Crivellari <marco.crivellari@suse.com>,
	Michal Hocko <mhocko@suse.com>,
	Alex Deucher <alexander.deucher@amd.com>,
	Christian Konig <christian.koenig@amd.com>,
	David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
	Philip Yang <yangp@amd.com>
Subject: [PATCH v3 4/4] drm/radeon: add WQ_PERCPU to alloc_workqueue users
Date: Wed, 24 Dec 2025 15:47:08 +0100	[thread overview]
Message-ID: <20251224144708.61167-5-marco.crivellari@suse.com> (raw)
In-Reply-To: <20251224144708.61167-1-marco.crivellari@suse.com>

This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:

   commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq")
   commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag")

The refactoring is going to alter the default behavior of
alloc_workqueue() to be unbound by default.

With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU. For more details see the Link tag below.

In order to keep alloc_workqueue() behavior identical, explicitly request
WQ_PERCPU.

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
---
 drivers/gpu/drm/radeon/radeon_display.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 35fb99bcd9a7..99a3e4c480c1 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -685,7 +685,8 @@ static void radeon_crtc_init(struct drm_device *dev, int index)
 	if (radeon_crtc == NULL)
 		return;
 
-	radeon_crtc->flip_queue = alloc_workqueue("radeon-crtc", WQ_HIGHPRI, 0);
+	radeon_crtc->flip_queue = alloc_workqueue("radeon-crtc",
+						  WQ_HIGHPRI | WQ_PERCPU, 0);
 	if (!radeon_crtc->flip_queue) {
 		kfree(radeon_crtc);
 		return;
-- 
2.52.0


  parent reply	other threads:[~2025-12-24 14:47 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-24 14:47 [PATCH v3 0/4] Replace old wq name and add WQ_PERCPU and WQ_UNBOUND " Marco Crivellari
2025-12-24 14:47 ` [PATCH v3 1/4] drm/amdgpu: replace use of system_unbound_wq with system_dfl_wq Marco Crivellari
2026-03-31 14:55   ` Alex Deucher
2026-03-31 14:56     ` Marco Crivellari
2025-12-24 14:47 ` [PATCH v3 2/4] drm/amdgpu: replace use of system_wq " Marco Crivellari
2025-12-24 14:47 ` [PATCH v3 3/4] amd/amdkfd: add WQ_UNBOUND to alloc_workqueue users Marco Crivellari
2025-12-24 14:47 ` Marco Crivellari [this message]
2026-03-31 14:49   ` [PATCH v3 4/4] drm/radeon: add WQ_PERCPU " Alex Deucher
2026-02-04 16:23 ` [PATCH v3 0/4] Replace old wq name and add WQ_PERCPU and WQ_UNBOUND " Marco Crivellari
2026-02-23  8:52 ` Marco Crivellari
2026-02-23 10:51   ` Christian König
2026-03-13 14:30     ` Marco Crivellari
2026-03-31 10:39 ` Marco Crivellari

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