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Wed, 05 Nov 2025 06:58:35 -0800 (PST) Received: from localhost.localdomain ([2a00:6d43:105:c401:e307:1a37:2e76:ce91]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-429dc200878sm10921977f8f.45.2025.11.05.06.58.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Nov 2025 06:58:34 -0800 (PST) From: Marco Crivellari To: linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org Cc: Tejun Heo , Lai Jiangshan , Frederic Weisbecker , Sebastian Andrzej Siewior , Marco Crivellari , Michal Hocko , Chaotian Jing , Ulf Hansson , Matthias Brugger , AngeloGioacchino Del Regno Subject: [PATCH] mmc: mtk-sd: replace use of system_wq with system_percpu_wq Date: Wed, 5 Nov 2025 15:58:24 +0100 Message-ID: <20251105145824.239054-1-marco.crivellari@suse.com> X-Mailer: git-send-email 2.51.1 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 old behavior. The old wq (system_wq) will be kept for a few release cycles. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari Reviewed-by: AngeloGioacchino Del Regno --- drivers/mmc/host/mtk-sd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 79074291e9d2..daed659f63f6 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1214,7 +1214,7 @@ static void msdc_start_data(struct msdc_host *host, s= truct mmc_command *cmd, host->data =3D data; read =3D data->flags & MMC_DATA_READ; =20 - mod_delayed_work(system_wq, &host->req_timeout, DAT_TIMEOUT); + mod_delayed_work(system_percpu_wq, &host->req_timeout, DAT_TIMEOUT); msdc_dma_setup(host, &host->dma, data); sdr_set_bits(host->base + MSDC_INTEN, data_ints_mask); sdr_set_field(host->base + MSDC_DMA_CTRL, MSDC_DMA_CTRL_START, 1); @@ -1444,7 +1444,7 @@ static void msdc_start_command(struct msdc_host *host, WARN_ON(host->cmd); host->cmd =3D cmd; =20 - mod_delayed_work(system_wq, &host->req_timeout, DAT_TIMEOUT); + mod_delayed_work(system_percpu_wq, &host->req_timeout, DAT_TIMEOUT); if (!msdc_cmd_is_ready(host, mrq, cmd)) return; =20 --=20 2.51.1