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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /include/rdma/restrack.h
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Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'include/rdma/restrack.h')
-rw-r--r--include/rdma/restrack.h187
1 files changed, 187 insertions, 0 deletions
diff --git a/include/rdma/restrack.h b/include/rdma/restrack.h
new file mode 100644
index 000000000..47fec3083
--- /dev/null
+++ b/include/rdma/restrack.h
@@ -0,0 +1,187 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/*
+ * Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved.
+ */
+
+#ifndef _RDMA_RESTRACK_H_
+#define _RDMA_RESTRACK_H_
+
+#include <linux/typecheck.h>
+#include <linux/sched.h>
+#include <linux/kref.h>
+#include <linux/completion.h>
+#include <linux/sched/task.h>
+#include <uapi/rdma/rdma_netlink.h>
+#include <linux/xarray.h>
+
+/* Mark entry as containing driver specific details, it is used to provide QP subtype for now */
+#define RESTRACK_DD XA_MARK_1
+
+struct ib_device;
+struct sk_buff;
+
+/**
+ * enum rdma_restrack_type - HW objects to track
+ */
+enum rdma_restrack_type {
+ /**
+ * @RDMA_RESTRACK_PD: Protection domain (PD)
+ */
+ RDMA_RESTRACK_PD,
+ /**
+ * @RDMA_RESTRACK_CQ: Completion queue (CQ)
+ */
+ RDMA_RESTRACK_CQ,
+ /**
+ * @RDMA_RESTRACK_QP: Queue pair (QP)
+ */
+ RDMA_RESTRACK_QP,
+ /**
+ * @RDMA_RESTRACK_CM_ID: Connection Manager ID (CM_ID)
+ */
+ RDMA_RESTRACK_CM_ID,
+ /**
+ * @RDMA_RESTRACK_MR: Memory Region (MR)
+ */
+ RDMA_RESTRACK_MR,
+ /**
+ * @RDMA_RESTRACK_CTX: Verbs contexts (CTX)
+ */
+ RDMA_RESTRACK_CTX,
+ /**
+ * @RDMA_RESTRACK_COUNTER: Statistic Counter
+ */
+ RDMA_RESTRACK_COUNTER,
+ /**
+ * @RDMA_RESTRACK_SRQ: Shared receive queue (SRQ)
+ */
+ RDMA_RESTRACK_SRQ,
+ /**
+ * @RDMA_RESTRACK_DMAH: DMA handle
+ */
+ RDMA_RESTRACK_DMAH,
+ /**
+ * @RDMA_RESTRACK_COMP_CNTR: Completion Counter
+ */
+ RDMA_RESTRACK_COMP_CNTR,
+ /**
+ * @RDMA_RESTRACK_MAX: Last entry, used for array dclarations
+ */
+ RDMA_RESTRACK_MAX
+};
+
+/**
+ * struct rdma_restrack_entry - metadata per-entry
+ */
+struct rdma_restrack_entry {
+ /**
+ * @valid: validity indicator
+ *
+ * The entries are filled during rdma_restrack_add,
+ * can be attempted to be free during rdma_restrack_del.
+ *
+ * As an example for that, see mlx5 QPs with type MLX5_IB_QPT_HW_GSI
+ */
+ bool valid;
+ /**
+ * @no_track: don't add this entry to restrack DB
+ *
+ * This field is used to mark an entry that doesn't need to be added to
+ * internal restrack DB and presented later to the users at the nldev
+ * query stage.
+ */
+ u8 no_track : 1;
+ /**
+ * @kref: Protect destroy of the resource
+ */
+ struct kref kref;
+ /**
+ * @comp: Signal that all consumers of resource are completed their work
+ */
+ struct completion comp;
+ /**
+ * @task: owner of resource tracking entity
+ *
+ * There are two types of entities: created by user and created
+ * by kernel.
+ *
+ * This is relevant for the entities created by users.
+ * For the entities created by kernel, this pointer will be NULL.
+ */
+ struct task_struct *task;
+ /**
+ * @kern_name: name of owner for the kernel created entities.
+ */
+ const char *kern_name;
+ /**
+ * @type: various objects in restrack database
+ */
+ enum rdma_restrack_type type;
+ /**
+ * @user: user resource
+ */
+ bool user;
+ /**
+ * @id: ID to expose to users
+ */
+ u32 id;
+};
+
+u32 rdma_restrack_count(struct ib_device *dev, enum rdma_restrack_type type,
+ bool show_details);
+/**
+ * rdma_is_kernel_res() - check the owner of resource
+ * @res: resource entry
+ */
+static inline bool rdma_is_kernel_res(const struct rdma_restrack_entry *res)
+{
+ return !res->user;
+}
+
+/**
+ * rdma_restrack_get() - grab to protect resource from release
+ * @res: resource entry
+ */
+int __must_check rdma_restrack_get(struct rdma_restrack_entry *res);
+
+/**
+ * rdma_restrack_put() - release resource
+ * @res: resource entry
+ */
+int rdma_restrack_put(struct rdma_restrack_entry *res);
+
+/*
+ * Helper functions for rdma drivers when filling out
+ * nldev driver attributes.
+ */
+int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value);
+int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name,
+ u32 value);
+int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value);
+int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name,
+ u64 value);
+int rdma_nl_put_driver_string(struct sk_buff *msg, const char *name,
+ const char *str);
+int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name,
+ u64 value);
+
+struct rdma_restrack_entry *rdma_restrack_get_byid(struct ib_device *dev,
+ enum rdma_restrack_type type,
+ u32 id);
+
+/**
+ * rdma_restrack_no_track() - don't add resource to the DB
+ * @res: resource entry
+ *
+ * Every user of this API should be cross examined.
+ * Probably you don't need to use this function.
+ */
+static inline void rdma_restrack_no_track(struct rdma_restrack_entry *res)
+{
+ res->no_track = true;
+}
+static inline bool rdma_restrack_is_tracked(struct rdma_restrack_entry *res)
+{
+ return !res->no_track;
+}
+#endif /* _RDMA_RESTRACK_H_ */