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Wed, 05 Nov 2025 07:57:58 -0800 (PST) Received: from localhost.localdomain ([2a00:6d43:105:c401:e307:1a37:2e76:ce91]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4775cdc2d14sm55567045e9.1.2025.11.05.07.57.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Nov 2025 07:57:57 -0800 (PST) From: Marco Crivellari To: linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Cc: Tejun Heo , Lai Jiangshan , Frederic Weisbecker , Sebastian Andrzej Siewior , Marco Crivellari , Michal Hocko , Hans de Goede , Ilpo Jarvinen , Maximilian Luz Subject: [PATCH 1/2] platform: surface: replace use of system_wq with system_percpu_wq Date: Wed, 5 Nov 2025 16:57:35 +0100 Message-ID: <20251105155742.293326-2-marco.crivellari@suse.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251105155742.293326-1-marco.crivellari@suse.com> References: <20251105155742.293326-1-marco.crivellari@suse.com> 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" Currently if a user enqueues a work item using schedule_delayed_work() the used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to schedule_work() that is using system_wq and queue_work(), that makes use again of WORK_CPU_UNBOUND. This lack of consistency cannot be addressed without refactoring the API. This patch continues the effort to refactor worqueue APIs, which has begun with the change 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") Replace system_wq with system_percpu_wq, keeping the same behavior. The old wq (system_wq) will be kept for a few release cycles. CC: Maximilian Luz Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari --- drivers/platform/surface/aggregator/ssh_packet_layer.c | 2 +- drivers/platform/surface/aggregator/ssh_request_layer.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/platform/surface/aggregator/ssh_packet_layer.c b/drive= rs/platform/surface/aggregator/ssh_packet_layer.c index 6081b0146d5f..3dd22856570f 100644 --- a/drivers/platform/surface/aggregator/ssh_packet_layer.c +++ b/drivers/platform/surface/aggregator/ssh_packet_layer.c @@ -671,7 +671,7 @@ static void ssh_ptl_timeout_reaper_mod(struct ssh_ptl *= ptl, ktime_t now, /* Re-adjust / schedule reaper only if it is above resolution delta. */ if (ktime_before(aexp, ptl->rtx_timeout.expires)) { ptl->rtx_timeout.expires =3D expires; - mod_delayed_work(system_wq, &ptl->rtx_timeout.reaper, delta); + mod_delayed_work(system_percpu_wq, &ptl->rtx_timeout.reaper, delta); } =20 spin_unlock(&ptl->rtx_timeout.lock); diff --git a/drivers/platform/surface/aggregator/ssh_request_layer.c b/driv= ers/platform/surface/aggregator/ssh_request_layer.c index 879ca9ee7ff6..a356e4956562 100644 --- a/drivers/platform/surface/aggregator/ssh_request_layer.c +++ b/drivers/platform/surface/aggregator/ssh_request_layer.c @@ -434,7 +434,7 @@ static void ssh_rtl_timeout_reaper_mod(struct ssh_rtl *= rtl, ktime_t now, /* Re-adjust / schedule reaper only if it is above resolution delta. */ if (ktime_before(aexp, rtl->rtx_timeout.expires)) { rtl->rtx_timeout.expires =3D expires; - mod_delayed_work(system_wq, &rtl->rtx_timeout.reaper, delta); + mod_delayed_work(system_percpu_wq, &rtl->rtx_timeout.reaper, delta); } =20 spin_unlock(&rtl->rtx_timeout.lock); --=20 2.51.1