/* * netprio_cgroup.h Control Group Priority set * * * Authors: Neil Horman * * 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. * */ #ifndef _NETPRIO_CGROUP_H #define _NETPRIO_CGROUP_H #include #include #include #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) struct netprio_map { struct rcu_head rcu; u32 priomap_len; u32 priomap[]; }; static inline u32 task_netprioidx(struct task_struct *p) { struct cgroup_subsys_state *css; u32 idx; rcu_read_lock(); css = task_css(p, net_prio_cgrp_id); idx = css->cgroup->id; rcu_read_unlock(); return idx; } static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd) { if (in_interrupt()) return; sock_cgroup_set_prioidx(skcd, task_netprioidx(current)); } #else /* !CONFIG_CGROUP_NET_PRIO */ static inline u32 task_netprioidx(struct task_struct *p) { return 0; } static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd) { } #endif /* CONFIG_CGROUP_NET_PRIO */ #endif /* _NET_CLS_CGROUP_H */ -back'>packet-loop-back net-next plumbingsTobias Klauser
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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 /include/drm/drm_print.h
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 'include/drm/drm_print.h')