From nobody Fri Dec 19 09:29:28 2025 Received: from mail-ej1-f54.google.com (mail-ej1-f54.google.com [209.85.218.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A93BB2E5439 for ; Tue, 4 Nov 2025 11:13:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762254834; cv=none; b=McP4qT28dJqoN6EH+pkyWZ6Ax/ZUBhQJvIDc9g8K3A8j1GTMF0yaWhx8AI5vgaKtMOHLR6GGN6O7QONtQKvM3A6qAnG9s6o1sDCrfzEjuqb0RJ4fQz812lept2OTnBJKZDH2HLrfkmstf8SkvBePRL0VO6tTW+rdp2bkI9nd5kg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762254834; c=relaxed/simple; bh=KA0j3YgxB3XEEM9Ys/NhFXMaqN/FeFIG4+oUH4AOWbM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=AOSBCcgHDFaIF0TfEu4f3n1ix9c8iJsqk/M713I+ONHWfx6lm5G8b2scWJBPx2qbWDD8bydbrT0d+3SHEvfPMH7yh5xyRLP4C7qlJc6+XBQnEcYNb4Hsjs9eMCM7xLuuNMzDektPyTX90OPbZskybcNOHtbKm0LRbeFn0xVXgcs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b=YT55sXM6; arc=none smtp.client-ip=209.85.218.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b="YT55sXM6" Received: by mail-ej1-f54.google.com with SMTP id a640c23a62f3a-b5b823b4f3dso869618766b.3 for ; Tue, 04 Nov 2025 03:13:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1762254831; x=1762859631; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=s94GaX5ziUst06zKBktu8domBKnJPpNxJWVCWIZ+Hqs=; b=YT55sXM6scBp1Wbbqyk/Om7ckPKl6Rzws/3KDoJevh3cEOIPFT9AXhwqy87Kdcxigm awJej6+PMo7Fesl+TJtysJ1q2I32oJ/jIkKOGoaMIGC9z66u+umG039KIxJgcQZwnL6k TaXOSRLyATqzZIJpk9EXzqgALrL9LWGhD1pn3ycPL6S42IbOhfH1mS2H/leomV6Z0/Lh MdDqknKlQrRW81X+2UJ0bgIbKzrDHkiLKQ5n0vGWnco2p74nyKIllZg/3UtmBsbvu1iv bQnbF6HPgO2xWHfMUg2zmPQzsyCLU5K06n3nczKQkZzLkK21/xvnQ8hPP7xCemu46i+Y P7Mw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762254831; x=1762859631; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=s94GaX5ziUst06zKBktu8domBKnJPpNxJWVCWIZ+Hqs=; b=qbtHQwZq5E5xmZ76T0Eu4NkNZzIM7iJuXGDcujplxSuVwUPNgTGf7E6UjSDMHP1x2p 9Gukz8bRCzktnab16uRMDnv8osrOv6j3WVO4RKMU59IR0xc34ynTcFPFFOBaSRJrxpfq M6imxLc5DJFrRww3kIH61Jzm+GfQMcj8msrh+ZfoRrLqyvzrGRuA+/MmcAOpgmS25skP qML+oJxZSw7Tw8t+3iIqbW2XgvtppTIqG7816mWeyZIy4EvtSt3KWhhzUQ23hckD/KSv jeM+mTZEv/atHNGZ03EwUF2QQoxjyf/QLEsn5LoNO+1v9MjO3/c1fjFG4rGkvfQIL/Oo LAug== X-Gm-Message-State: AOJu0Yw93c+0fKTsJwo230yuYiIXgCRzEP68oghineSNG/94L8iLdqcr CfKZJaD/J0yIWGtWg5to9gx6AegbWsB+wRy9jOFlq6hCOtshPz8O0YhiL6Zudbd3sdG4XLQ1Y7r ruxLo X-Gm-Gg: ASbGncvaQDqdAuZdgs/QALghqaS0SSoKTVvfeCNJBPtNY2mE56O5/vUkw7nJY2I5K6H olaJrZ8E55vcoIw/ce1djjiOi7iHdzzMQsmt5VtUJ+jvBtsgD5u97qop9tZ3E9ZmpfkDIInI4dX z8PunDFH78AL/aTF0JbQUqH7WwscSFwytsVKr7jTbUe2TUMumW/KA23sEce+ii0bA6k7G6kUDFC LsOY+dPMcgixlPFf1rtn7Io//ODvbd/BiXBzb/kzwwadMnRaeDGozssFZuwHBcKk1oYeKaBF7ED mu+x/QO8+9chITShU3WVJXkMkBxfCEAPS0/QB8oYJ0l5MsUccJ0Va9kLgco6oQhgR7nvhcIj7LW 7Cq+7UVEBxXvHexh813WAGcQFC/fcASLCsMLdhTdehmCfXrqxtgDNJtcvneHhWxrfOv0wiPDrB+ VSNEg= X-Google-Smtp-Source: AGHT+IGIKQ0i7VCw1+VrOGOFsyW3F2C7ehcgVweuycR8D6O6/kCL/ZfipETLPXIUcsBv9LNPdQBEJA== X-Received: by 2002:a17:907:e8e:b0:b6d:606f:2aa9 with SMTP id a640c23a62f3a-b70708a8b76mr1463526366b.65.1762254830678; Tue, 04 Nov 2025 03:13:50 -0800 (PST) Received: from linux ([2a00:6d43:105:c401:e307:1a37:2e76:ce91]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b723fa0828dsm184236966b.50.2025.11.04.03.13.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Nov 2025 03:13:50 -0800 (PST) From: Marco Crivellari To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: Tejun Heo , Lai Jiangshan , Frederic Weisbecker , Sebastian Andrzej Siewior , Marco Crivellari , Michal Hocko , Andrzej Hajda , Robert Foss , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Subject: [PATCH] drm/bridge: replace use of system_wq with system_percpu_wq Date: Tue, 4 Nov 2025 12:13:39 +0100 Message-ID: <20251104111339.128685-1-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 enqueue 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 consistentcy 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") system_wq should be the per-cpu workqueue, yet in this name nothing makes that clear, so replace system_wq with system_percpu_wq. The old wq (system_wq) will be kept for a few release cycles. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari --- drivers/gpu/drm/bridge/ite-it6505.c | 2 +- drivers/gpu/drm/bridge/ti-tfp410.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/i= te-it6505.c index a094803ba7aa..37bb8123cf9b 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -2048,7 +2048,7 @@ static void it6505_start_hdcp(struct it6505 *it6505) =20 DRM_DEV_DEBUG_DRIVER(dev, "start"); it6505_reset_hdcp(it6505); - queue_delayed_work(system_wq, &it6505->hdcp_work, + queue_delayed_work(system_percpu_wq, &it6505->hdcp_work, msecs_to_jiffies(2400)); } =20 diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti= -tfp410.c index b80ee089f880..85fa3f8a747e 100644 --- a/drivers/gpu/drm/bridge/ti-tfp410.c +++ b/drivers/gpu/drm/bridge/ti-tfp410.c @@ -115,7 +115,7 @@ static void tfp410_hpd_callback(void *arg, enum drm_con= nector_status status) { struct tfp410 *dvi =3D arg; =20 - mod_delayed_work(system_wq, &dvi->hpd_work, + mod_delayed_work(system_percpu_wq, &dvi->hpd_work, msecs_to_jiffies(HOTPLUG_DEBOUNCE_MS)); } =20 --=20 2.51.1