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Fri, 13 Mar 2026 07:47:32 -0700 (PDT) Received: from linux.fritz.box ([2a00:6d43:105:c401:e307:1a37:2e76:ce91]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-439fe22f3a4sm18375071f8f.38.2026.03.13.07.47.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Mar 2026 07:47:32 -0700 (PDT) From: Marco Crivellari To: linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Tejun Heo , Lai Jiangshan , Frederic Weisbecker , Sebastian Andrzej Siewior , Marco Crivellari , Michal Hocko , Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , Christian Konig , David Airlie , Simona Vetter Subject: [PATCH] drm/amd/display: Replace use of system_wq with system_percpu_wq Date: Fri, 13 Mar 2026 15:47:15 +0100 Message-ID: <20260313144715.252069-1-marco.crivellari@suse.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This patch continues the effort to refactor workqueue APIs, which has begun with the changes introducing new workqueues and a new alloc_workqueue flag: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") The point of the refactoring is to eventually alter the default behavior of workqueues to become unbound by default so that their workload placement is optimized by the scheduler. Before that to happen, workqueue users must be converted to the better named new workqueues with no intended behaviour changes: system_wq -> system_percpu_wq system_unbound_wq -> system_dfl_wq This way the old obsolete workqueues (system_wq, system_unbound_wq) can be removed in the future. Link: https://lore.kernel.org/all/20250221112003.1dSuoGyc@linutronix.de/ Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gp= u/drm/amd/display/amdgpu_dm/amdgpu_dm.c index b3d6f2cd8ab6..04f09eb30e41 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -568,7 +568,7 @@ static void schedule_dc_vmin_vmax(struct amdgpu_device = *adev, offload_work->stream =3D stream; offload_work->adjust =3D adjust_copy; =20 - queue_work(system_wq, &offload_work->work); + queue_work(system_percpu_wq, &offload_work->work); } =20 static void dm_vupdate_high_irq(void *interrupt_params) @@ -4117,7 +4117,7 @@ static void handle_hpd_irq_helper(struct amdgpu_dm_co= nnector *aconnector) dc_sink_retain(aconnector->hdmi_prev_sink); =20 /* Schedule delayed detection. */ - if (mod_delayed_work(system_wq, + if (mod_delayed_work(system_percpu_wq, &aconnector->hdmi_hpd_debounce_work, msecs_to_jiffies(aconnector->hdmi_hpd_debounce_delay_ms))) drm_dbg_kms(dev, "HDMI HPD: Re-scheduled debounce work\n"); --=20 2.53.0