/* -*- mode: c; c-basic-offset: 8; -*- * vim: noexpandtab sw=8 ts=8 sts=0: * * tcp.h * * Function prototypes * * Copyright (C) 2004 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. * */ #ifndef O2CLUSTER_TCP_H #define O2CLUSTER_TCP_H #include #ifdef __KERNEL__ #include #include #else #include #endif #include #include struct o2net_msg { __be16 magic; __be16 data_len; __be16 msg_type; __be16 pad1; __be32 sys_status; __be32 status; __be32 key; __be32 msg_num; __u8 buf[0]; }; typedef int (o2net_msg_handler_func)(struct o2net_msg *msg, u32 len, void *data, void **ret_data); typedef void (o2net_post_msg_handler_func)(int status, void *data, void *ret_data); #define O2NET_MAX_PAYLOAD_BYTES (4096 - sizeof(struct o2net_msg)) /* same as hb delay, we're waiting for another node to recognize our hb */ #define O2NET_RECONNECT_DELAY_MS_DEFAULT 2000 #define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000 #define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000 #define O2NET_TCP_USER_TIMEOUT 0x7fffffff /* TODO: figure this out.... */ static inline int o2net_link_down(int err, struct socket *sock) { if (sock) { if (sock->sk->sk_state != TCP_ESTABLISHED && sock->sk->sk_state != TCP_CLOSE_WAIT) return 1; } if (err >= 0) return 0; switch (err) { /* ????????????????????????? */ case -ERESTARTSYS: case -EBADF: /* When the server has died, an ICMP port unreachable * message prompts ECONNREFUSED. */ case -ECONNREFUSED: case -ENOTCONN: case -ECONNRESET: case -EPIPE: return 1; } return 0; } enum { O2NET_DRIVER_UNINITED, O2NET_DRIVER_READY, }; int o2net_send_message(u32 msg_type, u32 key, void *data, u32 len, u8 target_node, int *status); int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *vec, size_t veclen, u8 target_node, int *status); int o2net_register_handler(u32 msg_type, u32 key, u32 max_len, o2net_msg_handler_func *func, void *data, o2net_post_msg_handler_func *post_func, struct list_head *unreg_list); void o2net_unregister_handler_list(struct list_head *list); void o2net_fill_node_map(unsigned long *map, unsigned bytes); struct o2nm_node; int o2net_register_hb_callbacks(void); void o2net_unregister_hb_callbacks(void); int o2net_start_listening(struct o2nm_node *node); void o2net_stop_listening(struct o2nm_node *node); void o2net_disconnect_node(struct o2nm_node *node); int o2net_num_connected_peers(void); int o2net_init(void); void o2net_exit(void); struct o2net_send_tracking; struct o2net_sock_container; #ifdef CONFIG_DEBUG_FS int o2net_debugfs_init(void); void o2net_debugfs_exit(void); void o2net_debug_add_nst(struct o2net_send_tracking *nst); void o2net_debug_del_nst(struct o2net_send_tracking *nst); void o2net_debug_add_sc(struct o2net_sock_container *sc); void o2net_debug_del_sc(struct o2net_sock_container *sc); #else static inline int o2net_debugfs_init(void) { return 0; } static inline void o2net_debugfs_exit(void) { } static inline void o2net_debug_add_nst(struct o2net_send_tracking *nst) { } static inline void o2net_debug_del_nst(struct o2net_send_tracking *nst) { } static inline void o2net_debug_add_sc(struct o2net_sock_container *sc) { } static inline void o2net_debug_del_sc(struct o2net_sock_container *sc) { } #endif /* CONFIG_DEBUG_FS */ #endif /* O2CLUSTER_TCP_H */ submit();'>
authorThomas Gleixner <tglx@linutronix.de>2017-01-31 09:37:34 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 21:47:58 +0100
commit0becc0ae5b42828785b589f686725ff5bc3b9b25 (patch)
treebe6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101 /sound/core/seq
parent24c2503255d35c269b67162c397a1a1c1e02f6ce (diff)
x86/mce: Make timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'sound/core/seq')