/* * net/tipc/name_table.h: Include file for TIPC name table code * * Copyright (c) 2000-2006, 2014-2015, Ericsson AB * Copyright (c) 2004-2005, 2010-2011, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _TIPC_NAME_TABLE_H #define _TIPC_NAME_TABLE_H struct tipc_subscription; struct tipc_plist; /* * TIPC name types reserved for internal TIPC use (both current and planned) */ #define TIPC_ZM_SRV 3 /* zone master service name type */ #define TIPC_PUBL_SCOPE_NUM (TIPC_NODE_SCOPE + 1) #define TIPC_NAMETBL_SIZE 1024 /* must be a power of 2 */ /** * struct publication - info about a published (name or) name sequence * @type: name sequence type * @lower: name sequence lower bound * @upper: name sequence upper bound * @scope: scope of publication * @node: network address of publishing port's node * @ref: publishing port * @key: publication key * @nodesub_list: subscription to "node down" event (off-node publication only) * @local_list: adjacent entries in list of publications made by this node * @pport_list: adjacent entries in list of publications made by this port * @node_list: adjacent matching name seq publications with >= node scope * @cluster_list: adjacent matching name seq publications with >= cluster scope * @zone_list: adjacent matching name seq publications with >= zone scope * @rcu: RCU callback head used for deferred freeing * * Note that the node list, cluster list, and zone list are circular lists. */ struct publication { u32 type; u32 lower; u32 upper; u32 scope; u32 node; u32 ref; u32 key; struct list_head nodesub_list; struct list_head local_list; struct list_head pport_list; struct list_head node_list; struct list_head cluster_list; struct list_head zone_list; struct rcu_head rcu; }; /** * struct name_table - table containing all existing port name publications * @seq_hlist: name sequence hash lists * @publ_list: pulication lists * @local_publ_count: number of publications issued by this node */ struct name_table { struct hlist_head seq_hlist[TIPC_NAMETBL_SIZE]; struct list_head publ_list[TIPC_PUBL_SCOPE_NUM]; u32 local_publ_count; }; int tipc_nl_name_table_dump(struct sk_buff *skb, struct netlink_callback *cb); u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, u32 *node); int tipc_nametbl_mc_translate(struct net *net, u32 type, u32 lower, u32 upper, u32 limit, struct tipc_plist *dports); struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower, u32 upper, u32 scope, u32 port_ref, u32 key); int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 ref, u32 key); struct publication *tipc_nametbl_insert_publ(struct net *net, u32 type, u32 lower, u32 upper, u32 scope, u32 node, u32 ref, u32 key); struct publication *tipc_nametbl_remove_publ(struct net *net, u32 type, u32 lower, u32 node, u32 ref, u32 key); void tipc_nametbl_subscribe(struct tipc_subscription *s); void tipc_nametbl_unsubscribe(struct tipc_subscription *s); int tipc_nametbl_init(struct net *net); void tipc_nametbl_stop(struct net *net); struct tipc_plist { struct list_head list; u32 port; }; static inline void tipc_plist_init(struct tipc_plist *pl) { INIT_LIST_HEAD(&pl->list); pl->port = 0; } void tipc_plist_push(struct tipc_plist *pl, u32 port); u32 tipc_plist_pop(struct tipc_plist *pl); #endif t@goodmis.org>2017-01-31 09:13:49 -0500 commit79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch) tree370efda701f03cccf21e02bb1fdd3b852547d75c /include/kvm/arm_pmu.h parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include/kvm/arm_pmu.h')