/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * 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, see . */ #ifndef _NET_BATMAN_ADV_LOG_H_ #define _NET_BATMAN_ADV_LOG_H_ #include "main.h" #include #include #include #ifdef CONFIG_BATMAN_ADV_DEBUG int batadv_debug_log_setup(struct batadv_priv *bat_priv); void batadv_debug_log_cleanup(struct batadv_priv *bat_priv); #else static inline int batadv_debug_log_setup(struct batadv_priv *bat_priv) { return 0; } static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv) { } #endif /** * enum batadv_dbg_level - available log levels * @BATADV_DBG_BATMAN: OGM and TQ computations related messages * @BATADV_DBG_ROUTES: route added / changed / deleted * @BATADV_DBG_TT: translation table messages * @BATADV_DBG_BLA: bridge loop avoidance messages * @BATADV_DBG_DAT: ARP snooping and DAT related messages * @BATADV_DBG_NC: network coding related messages * @BATADV_DBG_MCAST: multicast related messages * @BATADV_DBG_TP_METER: throughput meter messages * @BATADV_DBG_ALL: the union of all the above log levels */ enum batadv_dbg_level { BATADV_DBG_BATMAN = BIT(0), BATADV_DBG_ROUTES = BIT(1), BATADV_DBG_TT = BIT(2), BATADV_DBG_BLA = BIT(3), BATADV_DBG_DAT = BIT(4), BATADV_DBG_NC = BIT(5), BATADV_DBG_MCAST = BIT(6), BATADV_DBG_TP_METER = BIT(7), BATADV_DBG_ALL = 255, }; #ifdef CONFIG_BATMAN_ADV_DEBUG int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...) __printf(2, 3); /* possibly ratelimited debug output */ #define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...) \ do { \ if (atomic_read(&(bat_priv)->log_level) & (type) && \ (!(ratelimited) || net_ratelimit())) \ batadv_debug_log(bat_priv, fmt, ## arg); \ } \ while (0) #else /* !CONFIG_BATMAN_ADV_DEBUG */ __printf(4, 5) static inline void _batadv_dbg(int type __always_unused, struct batadv_priv *bat_priv __always_unused, int ratelimited __always_unused, const char *fmt __always_unused, ...) { } #endif #define batadv_dbg(type, bat_priv, arg...) \ _batadv_dbg(type, bat_priv, 0, ## arg) #define batadv_dbg_ratelimited(type, bat_priv, arg...) \ _batadv_dbg(type, bat_priv, 1, ## arg) #define batadv_info(net_dev, fmt, arg...) \ do { \ struct net_device *_netdev = (net_dev); \ struct batadv_priv *_batpriv = netdev_priv(_netdev); \ batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \ pr_info("%s: " fmt, _netdev->name, ## arg); \ } while (0) #define batadv_err(net_dev, fmt, arg...) \ do { \ struct net_device *_netdev = (net_dev); \ struct batadv_priv *_batpriv = netdev_priv(_netdev); \ batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \ pr_err("%s: " fmt, _netdev->name, ## arg); \ } while (0) #endif /* _NET_BATMAN_ADV_LOG_H_ */ =nds-private-remove&id=54791b276b4000b307339f269d3bf7db877d536f'>asm-generic/posix_types.h
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authorDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
committerDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
commit54791b276b4000b307339f269d3bf7db877d536f (patch)
tree1c2616bd373ce5ea28aac2a53e32f5b5834901ce /include/uapi/asm-generic/posix_types.h
parent5d0e7705774dd412a465896d08d59a81a345c1e4 (diff)
parent047487241ff59374fded8c477f21453681f5995c (diff)
Merge branch 'sparc64-non-resumable-user-error-recovery'
Liam R. Howlett says: ==================== sparc64: Recover from userspace non-resumable PIO & MEM errors A non-resumable error from userspace is able to cause a kernel panic or trap loop due to the setup and handling of the queued traps once in the kernel. This patch series addresses both of these issues. The queues are fixed by simply zeroing the memory before use. PIO errors from userspace will result in a SIGBUS being sent to the user process. The MEM errors form userspace will result in a SIGKILL and also cause the offending pages to be claimed so they are no longer used in future tasks. SIGKILL is used to ensure that the process does not try to coredump and result in an attempt to read the memory again from within kernel space. Although there is a HV call to scrub the memory (mem_scrub), there is no easy way to guarantee that the real memory address(es) are not used by other tasks. Clearing the error with mem_scrub would zero the memory and cause the other processes to proceed with bad data. The handling of other non-resumable errors remain unchanged and will cause a panic. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/asm-generic/posix_types.h')