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Thu, 08 Jan 2026 13:24:56 -0500 X-MC-Unique: -exXMXVqM_mpK8EEj6O-pA-1 X-Mimecast-MFC-AGG-ID: -exXMXVqM_mpK8EEj6O-pA_1767896692 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id C4E0A19560A3; Thu, 8 Jan 2026 18:24:52 +0000 (UTC) Received: from p16v.luc.cera.cz (unknown [10.44.32.20]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 906861800285; Thu, 8 Jan 2026 18:24:45 +0000 (UTC) From: Ivan Vecera To: netdev@vger.kernel.org Date: Thu, 8 Jan 2026 19:23:17 +0100 Message-ID: <20260108182318.20935-12-ivecera@redhat.com> In-Reply-To: <20260108182318.20935-1-ivecera@redhat.com> References: <20260108182318.20935-1-ivecera@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1767896700; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MHGl94+ux8GLgo24B5u6dYefzPli6EsQ2mcDi+fRvlU=; b=NH/ri+0JwcrRjs3zyUqvH4hS63lWzQkb1UdGrkDMtnexjV2eWynDikqHoZIe2dIY40ZZMz YOmrsQPxNJ9xi9bbz/xXWqPCxtd14ofkbZ2k/KdV6lJc510HcTorFwDNINLkUrtIfCGE3S gFb+MhLsx/+QzjcJWkO7l6cLkfVZk5k= X-Mailman-Original-Authentication-Results: smtp1.osuosl.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com X-Mailman-Original-Authentication-Results: smtp1.osuosl.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=NH/ri+0J Subject: [Intel-wired-lan] [PATCH net-next 11/12] drivers: Add support for DPLL reference count tracking X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eric Dumazet , Tony Nguyen , Rob Herring , Leon Romanovsky , Andrew Lunn , linux-rdma@vger.kernel.org, Przemek Kitszel , Arkadiusz Kubalewski , intel-wired-lan@lists.osuosl.org, Jakub Kicinski , Paolo Abeni , devicetree@vger.kernel.org, Conor Dooley , Jiri Pirko , Richard Cochran , Prathosh Satish , Vadim Fedorenko , Mark Bloch , linux-kernel@vger.kernel.org, Tariq Toukan , Alexander Lobakin , Jonathan Lemon , Krzysztof Kozlowski , Saeed Mahameed , "David S. Miller" Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" Update existing DPLL drivers to utilize the DPLL reference count tracking infrastructure. Add dpll_tracker fields to the drivers' internal device and pin structures. Pass pointers to these trackers when calling dpll_device_get/put() and dpll_pin_get/put(). This allows developers to inspect the specific references held by this driver via debugfs when CONFIG_DPLL_REFCNT_TRACKER is enabled, aiding in the debugging of resource leaks. Signed-off-by: Ivan Vecera --- drivers/dpll/zl3073x/dpll.c | 14 ++++++++------ drivers/dpll/zl3073x/dpll.h | 2 ++ drivers/net/ethernet/intel/ice/ice_dpll.c | 15 ++++++++------- drivers/net/ethernet/intel/ice/ice_dpll.h | 4 ++++ drivers/net/ethernet/mellanox/mlx5/core/dpll.c | 15 +++++++++------ drivers/ptp/ptp_ocp.c | 17 ++++++++++------- 6 files changed, 41 insertions(+), 26 deletions(-) diff --git a/drivers/dpll/zl3073x/dpll.c b/drivers/dpll/zl3073x/dpll.c index 5b2f9fd960fac..14f167394c9ed 100644 --- a/drivers/dpll/zl3073x/dpll.c +++ b/drivers/dpll/zl3073x/dpll.c @@ -29,6 +29,7 @@ * @list: this DPLL pin list entry * @dpll: DPLL the pin is registered to * @dpll_pin: pointer to registered dpll_pin + * @tracker: tracking object for the acquired reference * @label: package label * @dir: pin direction * @id: pin id @@ -44,6 +45,7 @@ struct zl3073x_dpll_pin { struct list_head list; struct zl3073x_dpll *dpll; struct dpll_pin *dpll_pin; + dpll_tracker tracker; char label[8]; enum dpll_pin_direction dir; u8 id; @@ -1368,7 +1370,7 @@ zl3073x_dpll_pin_register(struct zl3073x_dpll_pin *pin, u32 index) /* Create or get existing DPLL pin */ pin->dpll_pin = dpll_pin_get(zldpll->dev->clock_id, index, THIS_MODULE, - &props->dpll_props, NULL); + &props->dpll_props, &pin->tracker); if (IS_ERR(pin->dpll_pin)) { rc = PTR_ERR(pin->dpll_pin); goto err_pin_get; @@ -1391,7 +1393,7 @@ zl3073x_dpll_pin_register(struct zl3073x_dpll_pin *pin, u32 index) return 0; err_register: - dpll_pin_put(pin->dpll_pin, NULL); + dpll_pin_put(pin->dpll_pin, &pin->tracker); err_prio_get: pin->dpll_pin = NULL; err_pin_get: @@ -1422,7 +1424,7 @@ zl3073x_dpll_pin_unregister(struct zl3073x_dpll_pin *pin) /* Unregister the pin */ dpll_pin_unregister(zldpll->dpll_dev, pin->dpll_pin, ops, pin); - dpll_pin_put(pin->dpll_pin, NULL); + dpll_pin_put(pin->dpll_pin, &pin->tracker); pin->dpll_pin = NULL; } @@ -1596,7 +1598,7 @@ zl3073x_dpll_device_register(struct zl3073x_dpll *zldpll) dpll_mode_refsel); zldpll->dpll_dev = dpll_device_get(zldev->clock_id, zldpll->id, - THIS_MODULE, NULL); + THIS_MODULE, &zldpll->tracker); if (IS_ERR(zldpll->dpll_dev)) { rc = PTR_ERR(zldpll->dpll_dev); zldpll->dpll_dev = NULL; @@ -1608,7 +1610,7 @@ zl3073x_dpll_device_register(struct zl3073x_dpll *zldpll) zl3073x_prop_dpll_type_get(zldev, zldpll->id), &zl3073x_dpll_device_ops, zldpll); if (rc) { - dpll_device_put(zldpll->dpll_dev, NULL); + dpll_device_put(zldpll->dpll_dev, &zldpll->tracker); zldpll->dpll_dev = NULL; } @@ -1631,7 +1633,7 @@ zl3073x_dpll_device_unregister(struct zl3073x_dpll *zldpll) dpll_device_unregister(zldpll->dpll_dev, &zl3073x_dpll_device_ops, zldpll); - dpll_device_put(zldpll->dpll_dev, NULL); + dpll_device_put(zldpll->dpll_dev, &zldpll->tracker); zldpll->dpll_dev = NULL; } diff --git a/drivers/dpll/zl3073x/dpll.h b/drivers/dpll/zl3073x/dpll.h index e8c39b44b356c..c65c798c37927 100644 --- a/drivers/dpll/zl3073x/dpll.h +++ b/drivers/dpll/zl3073x/dpll.h @@ -18,6 +18,7 @@ * @check_count: periodic check counter * @phase_monitor: is phase offset monitor enabled * @dpll_dev: pointer to registered DPLL device + * @tracker: tracking object for the acquired reference * @lock_status: last saved DPLL lock status * @pins: list of pins * @change_work: device change notification work @@ -31,6 +32,7 @@ struct zl3073x_dpll { u8 check_count; bool phase_monitor; struct dpll_device *dpll_dev; + dpll_tracker tracker; enum dpll_lock_status lock_status; struct list_head pins; struct work_struct change_work; diff --git a/drivers/net/ethernet/intel/ice/ice_dpll.c b/drivers/net/ethernet/intel/ice/ice_dpll.c index 64b7b045ecd58..4eca62688d834 100644 --- a/drivers/net/ethernet/intel/ice/ice_dpll.c +++ b/drivers/net/ethernet/intel/ice/ice_dpll.c @@ -2814,7 +2814,7 @@ static void ice_dpll_release_pins(struct ice_dpll_pin *pins, int count) int i; for (i = 0; i < count; i++) - dpll_pin_put(pins[i].pin, NULL); + dpll_pin_put(pins[i].pin, &pins[i].tracker); } /** @@ -2840,7 +2840,7 @@ ice_dpll_get_pins(struct ice_pf *pf, struct ice_dpll_pin *pins, for (i = 0; i < count; i++) { pins[i].pin = dpll_pin_get(clock_id, i + start_idx, THIS_MODULE, - &pins[i].prop, NULL); + &pins[i].prop, &pins[i].tracker); if (IS_ERR(pins[i].pin)) { ret = PTR_ERR(pins[i].pin); goto release_pins; @@ -2851,7 +2851,7 @@ ice_dpll_get_pins(struct ice_pf *pf, struct ice_dpll_pin *pins, release_pins: while (--i >= 0) - dpll_pin_put(pins[i].pin, NULL); + dpll_pin_put(pins[i].pin, &pins[i].tracker); return ret; } @@ -3037,7 +3037,7 @@ static void ice_dpll_deinit_rclk_pin(struct ice_pf *pf) if (WARN_ON_ONCE(!vsi || !vsi->netdev)) return; dpll_netdev_pin_clear(vsi->netdev); - dpll_pin_put(rclk->pin, NULL); + dpll_pin_put(rclk->pin, &rclk->tracker); } /** @@ -3247,7 +3247,7 @@ ice_dpll_deinit_dpll(struct ice_pf *pf, struct ice_dpll *d, bool cgu) { if (cgu) dpll_device_unregister(d->dpll, d->ops, d); - dpll_device_put(d->dpll, NULL); + dpll_device_put(d->dpll, &d->tracker); } /** @@ -3271,7 +3271,8 @@ ice_dpll_init_dpll(struct ice_pf *pf, struct ice_dpll *d, bool cgu, u64 clock_id = pf->dplls.clock_id; int ret; - d->dpll = dpll_device_get(clock_id, d->dpll_idx, THIS_MODULE, NULL); + d->dpll = dpll_device_get(clock_id, d->dpll_idx, THIS_MODULE, + &d->tracker); if (IS_ERR(d->dpll)) { ret = PTR_ERR(d->dpll); dev_err(ice_pf_to_dev(pf), @@ -3287,7 +3288,7 @@ ice_dpll_init_dpll(struct ice_pf *pf, struct ice_dpll *d, bool cgu, ice_dpll_update_state(pf, d, true); ret = dpll_device_register(d->dpll, type, ops, d); if (ret) { - dpll_device_put(d->dpll, NULL); + dpll_device_put(d->dpll, &d->tracker); return ret; } d->ops = ops; diff --git a/drivers/net/ethernet/intel/ice/ice_dpll.h b/drivers/net/ethernet/intel/ice/ice_dpll.h index c0da03384ce91..63fac6510df6e 100644 --- a/drivers/net/ethernet/intel/ice/ice_dpll.h +++ b/drivers/net/ethernet/intel/ice/ice_dpll.h @@ -23,6 +23,7 @@ enum ice_dpll_pin_sw { /** ice_dpll_pin - store info about pins * @pin: dpll pin structure * @pf: pointer to pf, which has registered the dpll_pin + * @tracker: reference count tracker * @idx: ice pin private idx * @num_parents: hols number of parent pins * @parent_idx: hold indexes of parent pins @@ -37,6 +38,7 @@ enum ice_dpll_pin_sw { struct ice_dpll_pin { struct dpll_pin *pin; struct ice_pf *pf; + dpll_tracker tracker; u8 idx; u8 num_parents; u8 parent_idx[ICE_DPLL_RCLK_NUM_MAX]; @@ -58,6 +60,7 @@ struct ice_dpll_pin { /** ice_dpll - store info required for DPLL control * @dpll: pointer to dpll dev * @pf: pointer to pf, which has registered the dpll_device + * @tracker: reference count tracker * @dpll_idx: index of dpll on the NIC * @input_idx: currently selected input index * @prev_input_idx: previously selected input index @@ -76,6 +79,7 @@ struct ice_dpll_pin { struct ice_dpll { struct dpll_device *dpll; struct ice_pf *pf; + dpll_tracker tracker; u8 dpll_idx; u8 input_idx; u8 prev_input_idx; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dpll.c b/drivers/net/ethernet/mellanox/mlx5/core/dpll.c index 7c6789c478fee..e1f3d4dae557e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/dpll.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/dpll.c @@ -9,7 +9,9 @@ */ struct mlx5_dpll { struct dpll_device *dpll; + dpll_tracker dpll_tracker; struct dpll_pin *dpll_pin; + dpll_tracker pin_tracker; struct mlx5_core_dev *mdev; struct workqueue_struct *wq; struct delayed_work work; @@ -438,7 +440,8 @@ static int mlx5_dpll_probe(struct auxiliary_device *adev, auxiliary_set_drvdata(adev, mdpll); /* Multiple mdev instances might share one DPLL device. */ - mdpll->dpll = dpll_device_get(clock_id, 0, THIS_MODULE, NULL); + mdpll->dpll = dpll_device_get(clock_id, 0, THIS_MODULE, + &mdpll->dpll_tracker); if (IS_ERR(mdpll->dpll)) { err = PTR_ERR(mdpll->dpll); goto err_free_mdpll; @@ -452,7 +455,7 @@ static int mlx5_dpll_probe(struct auxiliary_device *adev, /* Multiple mdev instances might share one DPLL pin. */ mdpll->dpll_pin = dpll_pin_get(clock_id, mlx5_get_dev_index(mdev), THIS_MODULE, &mlx5_dpll_pin_properties, - NULL); + &mdpll->pin_tracker); if (IS_ERR(mdpll->dpll_pin)) { err = PTR_ERR(mdpll->dpll_pin); goto err_unregister_dpll_device; @@ -480,11 +483,11 @@ static int mlx5_dpll_probe(struct auxiliary_device *adev, dpll_pin_unregister(mdpll->dpll, mdpll->dpll_pin, &mlx5_dpll_pins_ops, mdpll); err_put_dpll_pin: - dpll_pin_put(mdpll->dpll_pin, NULL); + dpll_pin_put(mdpll->dpll_pin, &mdpll->pin_tracker); err_unregister_dpll_device: dpll_device_unregister(mdpll->dpll, &mlx5_dpll_device_ops, mdpll); err_put_dpll_device: - dpll_device_put(mdpll->dpll, NULL); + dpll_device_put(mdpll->dpll, &mdpll->dpll_tracker); err_free_mdpll: kfree(mdpll); return err; @@ -500,9 +503,9 @@ static void mlx5_dpll_remove(struct auxiliary_device *adev) destroy_workqueue(mdpll->wq); dpll_pin_unregister(mdpll->dpll, mdpll->dpll_pin, &mlx5_dpll_pins_ops, mdpll); - dpll_pin_put(mdpll->dpll_pin, NULL); + dpll_pin_put(mdpll->dpll_pin, &mdpll->pin_tracker); dpll_device_unregister(mdpll->dpll, &mlx5_dpll_device_ops, mdpll); - dpll_device_put(mdpll->dpll, NULL); + dpll_device_put(mdpll->dpll, &mdpll->dpll_tracker); kfree(mdpll); mlx5_dpll_synce_status_set(mdev, diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c index f39b3966b3e8c..1b16a9c3d7fdc 100644 --- a/drivers/ptp/ptp_ocp.c +++ b/drivers/ptp/ptp_ocp.c @@ -285,6 +285,7 @@ struct ptp_ocp_sma_connector { u8 default_fcn; struct dpll_pin *dpll_pin; struct dpll_pin_properties dpll_prop; + dpll_tracker tracker; }; struct ocp_attr_group { @@ -383,6 +384,7 @@ struct ptp_ocp { struct ptp_ocp_sma_connector sma[OCP_SMA_NUM]; const struct ocp_sma_op *sma_op; struct dpll_device *dpll; + dpll_tracker tracker; int signals_nr; int freq_in_nr; }; @@ -4788,7 +4790,7 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id) devlink_register(devlink); clkid = pci_get_dsn(pdev); - bp->dpll = dpll_device_get(clkid, 0, THIS_MODULE, NULL); + bp->dpll = dpll_device_get(clkid, 0, THIS_MODULE, &bp->tracker); if (IS_ERR(bp->dpll)) { err = PTR_ERR(bp->dpll); dev_err(&pdev->dev, "dpll_device_alloc failed\n"); @@ -4801,7 +4803,8 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id) for (i = 0; i < OCP_SMA_NUM; i++) { bp->sma[i].dpll_pin = dpll_pin_get(clkid, i, THIS_MODULE, - &bp->sma[i].dpll_prop, NULL); + &bp->sma[i].dpll_prop, + &bp->sma[i].tracker); if (IS_ERR(bp->sma[i].dpll_pin)) { err = PTR_ERR(bp->sma[i].dpll_pin); goto out_dpll; @@ -4810,7 +4813,7 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id) err = dpll_pin_register(bp->dpll, bp->sma[i].dpll_pin, &dpll_pins_ops, &bp->sma[i]); if (err) { - dpll_pin_put(bp->sma[i].dpll_pin, NULL); + dpll_pin_put(bp->sma[i].dpll_pin, &bp->sma[i].tracker); goto out_dpll; } } @@ -4820,9 +4823,9 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id) out_dpll: while (i--) { dpll_pin_unregister(bp->dpll, bp->sma[i].dpll_pin, &dpll_pins_ops, &bp->sma[i]); - dpll_pin_put(bp->sma[i].dpll_pin, NULL); + dpll_pin_put(bp->sma[i].dpll_pin, &bp->sma[i].tracker); } - dpll_device_put(bp->dpll, NULL); + dpll_device_put(bp->dpll, &bp->tracker); out: ptp_ocp_detach(bp); out_disable: @@ -4843,11 +4846,11 @@ ptp_ocp_remove(struct pci_dev *pdev) for (i = 0; i < OCP_SMA_NUM; i++) { if (bp->sma[i].dpll_pin) { dpll_pin_unregister(bp->dpll, bp->sma[i].dpll_pin, &dpll_pins_ops, &bp->sma[i]); - dpll_pin_put(bp->sma[i].dpll_pin, NULL); + dpll_pin_put(bp->sma[i].dpll_pin, &bp->sma[i].tracker); } } dpll_device_unregister(bp->dpll, &dpll_ops, bp); - dpll_device_put(bp->dpll, NULL); + dpll_device_put(bp->dpll, &bp->tracker); devlink_unregister(devlink); ptp_ocp_detach(bp); pci_disable_device(pdev); -- 2.52.0