| /linux-6.14.4/Documentation/devicetree/bindings/misc/ |
| D | intel,ixp4xx-ahb-queue-manager.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/misc/intel,ixp4xx-ahb-queue-manager.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Intel IXP4xx AHB Queue Manager
11 - Linus Walleij <[email protected]>
14 The IXP4xx AHB Queue Manager maintains queues as circular buffers in
18 queues from the queue manager with foo-queue = <&qmgr N> where the
19 &qmgr is a phandle to the queue manager and N is the queue resource
20 number. The queue resources available and their specific purpose
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| /linux-6.14.4/tools/bpf/bpftool/Documentation/ |
| D | bpftool-map.rst | 1 .. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 bpftool-map
6 -------------------------------------------------------------------------------
8 -------------------------------------------------------------------------------
19 *OPTIONS* := { |COMMON_OPTIONS| | { **-f** | **--bpffs** } | { **-n** | **--nomount** } }
57 | | **queue** | **stack** | **sk_storage** | **struct_ops** | **ringbuf** | **inode_storage**
82 To create maps of type array-of-maps or hash-of-maps, the **inner_map**
137 Peek next value in the queue or stack.
146 Enqueue *VALUE* into the queue.
149 Dequeue and print value from the queue.
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| /linux-6.14.4/tools/perf/Documentation/ |
| D | perf-config.txt | 1 perf-config(1)
5 ----
6 perf-config - Get and set variables in a configuration file.
9 --------
11 'perf config' [<file-option>] [section.name[=value] ...]
13 'perf config' [<file-option>] -l | --list
16 -----------
20 -------
22 -l::
23 --list::
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| /linux-6.14.4/rust/macros/ |
| D | lib.rs | 1 // SPDX-License-Identifier: GPL-2.0
48 /// fn init(_module: &'static ThisModule) -> Result<Self> {
49 /// let foo: i32 = 42;
50 /// pr_info!("I contain: {}\n", foo);
51 /// Ok(Self(foo))
81 /// fn init(_module: &'static ThisModule) -> Result<Self> {
89 /// - `type`: type which implements the [`Module`] trait (required).
90 /// - `name`: ASCII string literal of the name of the kernel module (required).
91 /// - `author`: string literal of the author of the kernel module.
92 /// - `description`: string literal of the description of the kernel module.
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| /linux-6.14.4/tools/testing/selftests/tc-testing/tc-tests/qdiscs/ |
| D | fifo.json | 17 "matchPattern": "qdisc bfifo 1: root.*limit [0-9]+b",
38 "matchPattern": "qdisc pfifo 1: root.*limit [0-9]+p",
59 "matchPattern": "qdisc bfifo ffff: root.*limit [0-9]+b",
67 "name": "Add bfifo qdisc on egress with queue size of 3000 bytes",
88 "name": "Add pfifo qdisc on egress with queue size of 3000 packets",
123 "matchPattern": "qdisc bfifo 10000: root.*limit [0-9]+b",
170 "name": "Replace bfifo qdisc on egress with new queue size",
193 "name": "Replace pfifo qdisc on egress with new queue size",
216 "name": "Add bfifo qdisc on egress with queue size in invalid format",
226 "cmdUnderTest": "$TC qdisc add dev $DUMMY handle 1: root bfifo limit foo-bar",
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| /linux-6.14.4/drivers/net/wireless/ath/ |
| D | ath.h | 2 * Copyright (c) 2008-2009 Atheros Communications Inc.
30 * and station state to short-circuit node lookups on rx.
119 * struct ath_ops - Register read/write operations
195 return common->ps_ops; in ath_ps_ops()
234 * enum ath_debug_level - atheros wireless debug level
237 * @ATH_DBG_QUEUE: hardware queue management
252 * used exclusively for WLAN-BT coexistence starting from
262 * modifying debug level states -- but this is typically done through a
298 if ((common)->debug_mask & ATH_DBG_##dbg_mask) \
302 #define ATH_DBG_WARN(foo, arg...) WARN(foo, arg) argument
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| /linux-6.14.4/Documentation/filesystems/ |
| D | inotify.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 Inotify - A Powerful yet Simple File Change Notification System
13 - Deleted obsoleted interface, just refer to manpages for user interface.
29 What is the design decision behind using an-fd-per-instance as opposed to
30 an fd-per-watch?
33 An fd-per-watch quickly consumes more file descriptors than are allowed,
35 select()-able. Yes, root can bump the per-process fd limit and yes, users
38 spaces is thus sensible. The current design is what user-space developers
41 thousand times is silly. If we can implement user-space's preferences
42 cleanly--and we can, the idr layer makes stuff like this trivial--then we
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| /linux-6.14.4/Documentation/power/ |
| D | runtime_pm.rst | 5 (C) 2009-2011 Rafael J. Wysocki <[email protected]>, Novell Inc.
18 put their PM-related work items. It is strongly recommended that pm_wq be
20 them to be synchronized with system-wide power transitions (suspend to RAM,
53 The ->runtime_suspend(), ->runtime_resume() and ->runtime_idle() callbacks
57 1. PM domain of the device, if the device's PM domain object, dev->pm_domain,
60 2. Device type of the device, if both dev->type and dev->type->pm are present.
62 3. Device class of the device, if both dev->class and dev->class->pm are
65 4. Bus type of the device, if both dev->bus and dev->bus->pm are present.
69 dev->driver->pm directly (if present).
73 and bus type. Moreover, the high-priority one will always take precedence over
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| /linux-6.14.4/Documentation/bpf/ |
| D | verifier.rst | 32 After kernel function call, R1-R5 are reset to unreadable and
35 Since R6-R9 are callee saved, their state is preserved across the call.
40 bpf_call foo
72 stack bounds, which are [-MAX_BPF_STACK, 0). In this example offset is 8,
78 Classic BPF verifier does similar check with M[0-15] memory slots.
81 bpf_ld R0 = *(u32 *)(R10 - 4)
85 Though R10 is correct read-only register and has type PTR_TO_STACK
86 and R10 - 4 is within stack bounds, there were no stores into that location.
88 Pointer register spill/fill is tracked as well, since four (R6-R9)
91 Allowed function calls are customized with bpf_verifier_ops->get_func_proto()
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| /linux-6.14.4/Documentation/mm/ |
| D | physical_memory.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 architecture-independent abstraction to represent the physical memory. This
13 `Non-Uniform Memory Access (NUMA)
14 <https://en.wikipedia.org/wiki/Non-uniform_memory_access>`_.
15 With multi-core and multi-socket machines, memory may be arranged into banks
42 memory with DMA specific requirements (Documentation/core-api/dma-api.rst),
47 ``CONFIG_ZONE_DMA32`` configuration options. Some 64-bit platforms may need
59 only on some 32-bit architectures and is enabled with ``CONFIG_HIGHMEM``.
69 Documentation/admin-guide/mm/memory-hotplug.rst for additional details.
85 For example, with 32-bit kernel on an x86 UMA machine with 2 Gbytes of RAM the
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| /linux-6.14.4/net/unix/ |
| D | garbage.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
13 * - object w/ a bit
14 * - free list
18 * - explicit stack instead of recursion
19 * - tail recurse on first born instead of immediate push/pop
20 * - we gather the stuff that should not be killed into tree
25 * - don't just push entire root set; process in place
32 * of foo to bar and vice versa. Current code chokes on that.
38 * upon the beginning and unmark non-junk ones.
56 * parents (->gc_tree).
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| /linux-6.14.4/Documentation/networking/ |
| D | snmp_counter.rst | 17 .. _RFC1213 ipInReceives: https://tools.ietf.org/html/rfc1213#page-26
30 .. _RFC1213 ipInDelivers: https://tools.ietf.org/html/rfc1213#page-28
41 .. _RFC1213 ipOutRequests: https://tools.ietf.org/html/rfc1213#page-28
60 .. _Explicit Congestion Notification: https://tools.ietf.org/html/rfc3168#page-6
73 .. _RFC1213 ipInHdrErrors: https://tools.ietf.org/html/rfc1213#page-27
81 .. _RFC1213 ipInAddrErrors: https://tools.ietf.org/html/rfc1213#page-27
98 .. _RFC1213 ipInUnknownProtos: https://tools.ietf.org/html/rfc1213#page-27
111 .. _RFC1213 ipInDiscards: https://tools.ietf.org/html/rfc1213#page-28
118 .. _RFC1213 ipOutDiscards: https://tools.ietf.org/html/rfc1213#page-28
125 .. _RFC1213 ipOutNoRoutes: https://tools.ietf.org/html/rfc1213#page-29
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| D | filter.rst | 1 .. SPDX-License-Identifier: GPL-2.0
3 .. _networking-filter:
10 ------
17 ------------
24 BPF allows a user-space program to attach a filter onto any socket and
49 The biggest user of this construct might be libpcap. Issuing a high-level
50 filter command like `tcpdump -i em1 port 22` passes through the libpcap
52 via SO_ATTACH_FILTER to the kernel. `tcpdump -i em1 port 22 -ddd`
57 qdisc layer, SECCOMP-BPF (SECure COMPuting [1]_), and lots of other places
60 .. [1] Documentation/userspace-api/seccomp_filter.rst
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| /linux-6.14.4/kernel/locking/ |
| D | rtmutex.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * RT-Mutexes: simple blocking mutual exclusion locks with PI support
7 * Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <[email protected]>
8 * Copyright (C) 2005-2006 Timesys Corp., Thomas Gleixner <[email protected]>
17 * See Documentation/locking/rt-mutex-design.rst for details.
68 * lock->owner state tracking:
70 * lock->owner holds the task_struct pointer of the owner. Bit 0
81 * possible when bit 0 of lock->owner is 0.
84 * with ->wait_lock is held. To prevent any fast path cmpxchg to the lock,
109 * lock->wait_lock is held but explicit acquire semantics are needed in rt_mutex_set_owner()
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| /linux-6.14.4/ipc/ |
| D | mqueue.c | 70 * Accesses to a message queue are synchronized by acquiring info->lock.
73 * - The actual wakeup of a sleeping task is performed using the wake_q
74 * framework. info->lock is already released when wake_up_q is called.
75 * - The exit codepaths after sleeping check ext_wait_queue->state without
77 * acquiring info->lock.
94 * ->state = STATE_READY (reordered)
102 * the smp_store_release() that does ->state = STATE_READY.
116 * receiver->msg = message; (reordered)
120 * 3) There is intentionally no barrier when setting current->state
121 * to TASK_INTERRUPTIBLE: spin_unlock(&info->lock) provides the
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| /linux-6.14.4/include/net/ |
| D | gro.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
20 /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
36 /* This indicates where we are processing relative to skb->data. */
39 /* This is non-zero if the packet cannot be merged with the new skb. */
45 /* Used in ipv6_gro_receive() and foo-over-udp and esp-in-udp */
59 /* This is non-zero if the packet may be of the same flow. */
74 /* Used in foo-over-udp, set in udp[46]_gro_receive */
103 #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
108 return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT; in gro_recursion_inc_test()
117 NAPI_GRO_CB(skb)->flush |= 1; in call_gro_receive()
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| /linux-6.14.4/net/sunrpc/ |
| D | rpc_pipe.c | 1 // SPDX-License-Identifier: GPL-2.0-only
72 msg = list_entry(head->next, struct rpc_pipe_msg, list); in rpc_purge_list()
73 list_del_init(&msg->list); in rpc_purge_list()
74 msg->errno = err; in rpc_purge_list()
91 spin_lock(&pipe->lock); in rpc_timeout_upcall_queue()
92 destroy_msg = pipe->ops->destroy_msg; in rpc_timeout_upcall_queue()
93 if (pipe->nreaders == 0) { in rpc_timeout_upcall_queue()
94 list_splice_init(&pipe->pipe, &free_list); in rpc_timeout_upcall_queue()
95 pipe->pipelen = 0; in rpc_timeout_upcall_queue()
97 dentry = dget(pipe->dentry); in rpc_timeout_upcall_queue()
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| /linux-6.14.4/include/linux/device/ |
| D | bus.h | 1 // SPDX-License-Identifier: GPL-2.0
3 * bus.h - the bus-specific portions of the driver model
5 * Copyright (c) 2001-2003 Patrick Mochel <[email protected]>
6 * Copyright (c) 2004-2009 Greg Kroah-Hartman <[email protected]>
7 * Copyright (c) 2008-2009 Novell Inc.
8 * Copyright (c) 2012-2019 Greg Kroah-Hartman <[email protected]>
9 * Copyright (c) 2012-2019 Linux Foundation
11 * See Documentation/driver-api/driver-model/ for more information.
25 * struct bus_type - The bus type of the device
28 * @dev_name: Used for subsystems to enumerate devices like ("foo%u", dev->id).
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| /linux-6.14.4/fs/ceph/ |
| D | mds_client.c | 1 // SPDX-License-Identifier: GPL-2.0
28 #define RECONNECT_MAX_SIZE (INT_MAX - PAGE_SIZE)
90 ceph_decode_64_safe(p, end, info->max_bytes, bad); in parse_reply_info_quota()
91 ceph_decode_64_safe(p, end, info->max_files, bad); in parse_reply_info_quota()
95 return -EIO; in parse_reply_info_quota()
108 if (features == (u64)-1) { in parse_reply_info_in()
123 info->in = *p; in parse_reply_info_in()
125 sizeof(*info->in->fragtree.splits) * in parse_reply_info_in()
126 le32_to_cpu(info->in->fragtree.nsplits); in parse_reply_info_in()
128 ceph_decode_32_safe(p, end, info->symlink_len, bad); in parse_reply_info_in()
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| /linux-6.14.4/Documentation/doc-guide/ |
| D | sphinx.rst | 12 .. _Sphinx: http://www.sphinx-doc.org/
16 documentation comments, or kernel-doc comments, from source files. Usually these
18 kernel-doc comments have some special structure and formatting, but beyond that
34 :ref:`sphinx-pre-install` for further details.
42 Sphinx inside a virtual environment, using ``virtualenv-3``
56 (sphinx_latest) $ pip install -r Documentation/sphinx/requirements.txt
64 ------------
75 --------------------
86 ------------------------
95 The former was the only option for pre-6.1 kernel documentation and it
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| /linux-6.14.4/net/ipv4/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
40 so-called IP spoofing, however it can pose problems if you use
42 than packets from that host to you) or if you operate a non-routing
52 <file:Documentation/networking/ip-sysctl.rst>.
71 address into account. Furthermore, the TOS (Type-Of-Service) field
89 equal "cost" and chooses one of them in a non-deterministic fashion
132 <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
147 Read <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
160 <file:Documentation/admin-guide/nfs/nfsroot.rst> for details.
173 mobile-IP facilities (allowing laptops to seamlessly move between
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| D | ip_output.c | 1 // SPDX-License-Identifier: GPL-2.0-only
39 * silently drop skb instead of failing with -EPERM.
81 #include <linux/bpf-cgroup.h>
96 iph->check = 0; in ip_send_check()
97 iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); in ip_send_check()
107 iph_set_totlen(iph, skb->len); in __ip_local_out()
117 skb->protocol = htons(ETH_P_IP); in __ip_local_out()
120 net, sk, skb, NULL, skb_dst(skb)->dev, in __ip_local_out()
139 int ttl = READ_ONCE(inet->uc_ttl); in ip_select_ttl()
160 skb_push(skb, sizeof(struct iphdr) + (opt ? opt->opt.optlen : 0)); in ip_build_and_send_pkt()
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| /linux-6.14.4/tools/testing/selftests/net/mptcp/ |
| D | mptcp_connect.c | 1 // SPDX-License-Identifier: GPL-2.0
111 fprintf(stderr, "Usage: mptcp_connect [-6] [-c cmsg] [-f offset] [-i file] [-I num] [-j] [-l] " in die_usage()
112 "[-m mode] [-M mark] [-o option] [-p port] [-P mode] [-r num] [-R num] " in die_usage()
113 "[-s MPTCP|TCP] [-S num] [-t num] [-T num] [-w sec] connect_address\n"); in die_usage()
114 fprintf(stderr, "\t-6 use ipv6\n"); in die_usage()
115 fprintf(stderr, "\t-c cmsg -- test cmsg type <cmsg>\n"); in die_usage()
116 fprintf(stderr, "\t-f offset -- stop the I/O after receiving and sending the specified amount " in die_usage()
117 "of bytes. If there are unread bytes in the receive queue, that will cause a MPTCP " in die_usage()
120 fprintf(stderr, "\t-i file -- read the data to send from the given file instead of stdin"); in die_usage()
121 fprintf(stderr, "\t-I num -- repeat the transfer 'num' times. In listen mode accepts num " in die_usage()
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| /linux-6.14.4/scripts/ |
| D | get_abi.pl | 2 # SPDX-License-Identifier: GPL-2.0
43 "enable-lineno" => \$enable_lineno,
44 "rst-source!" => \$description_is_rst,
47 "show-hints" => \$hint,
48 "search-string=s" => \$search_string,
53 pod2usage(-exitstatus => 0, -noperldoc, -verbose => 2) if $man;
105 $data{$nametag}->{what} = "File $name";
106 $data{$nametag}->{type} = "File";
107 $data{$nametag}->{file} = $name;
108 $data{$nametag}->{filepath} = $file;
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| /linux-6.14.4/init/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
8 - Re-run Kconfig when the compiler is updated
13 - Ensure full rebuild when the compiler is updated
14 include/linux/compiler-version.h contains this option in the comment
16 auto-generated dependency. When the compiler is updated, syncconfig
20 def_bool $(success,test "$(cc-name)" = GCC)
24 default $(cc-version) if CC_IS_GCC
28 def_bool $(success,test "$(cc-name)" = Clang)
32 default $(cc-version) if CC_IS_CLANG
36 def_bool $(success,test "$(as-name)" = GNU)
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|