/* * Copyright (C) 2012 Red Hat Inc, Steven Rostedt * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License (not later!) * * 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef _KBUFFER_H #define _KBUFFER_H #ifndef TS_SHIFT #define TS_SHIFT 27 #endif enum kbuffer_endian { KBUFFER_ENDIAN_BIG, KBUFFER_ENDIAN_LITTLE, }; enum kbuffer_long_size { KBUFFER_LSIZE_4, KBUFFER_LSIZE_8, }; enum { KBUFFER_TYPE_PADDING = 29, KBUFFER_TYPE_TIME_EXTEND = 30, KBUFFER_TYPE_TIME_STAMP = 31, }; struct kbuffer; struct kbuffer *kbuffer_alloc(enum kbuffer_long_size size, enum kbuffer_endian endian); void kbuffer_free(struct kbuffer *kbuf); int kbuffer_load_subbuffer(struct kbuffer *kbuf, void *subbuffer); void *kbuffer_read_event(struct kbuffer *kbuf, unsigned long long *ts); void *kbuffer_next_event(struct kbuffer *kbuf, unsigned long long *ts); unsigned long long kbuffer_timestamp(struct kbuffer *kbuf); void *kbuffer_translate_data(int swap, void *data, unsigned int *size); void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset, unsigned long long *ts); int kbuffer_curr_index(struct kbuffer *kbuf); int kbuffer_curr_offset(struct kbuffer *kbuf); int kbuffer_curr_size(struct kbuffer *kbuf); int kbuffer_event_size(struct kbuffer *kbuf); int kbuffer_missed_events(struct kbuffer *kbuf); int kbuffer_subbuffer_size(struct kbuffer *kbuf); void kbuffer_set_old_format(struct kbuffer *kbuf); int kbuffer_start_of_data(struct kbuffer *kbuf); #endif /* _K_BUFFER_H */ becc0ae5b42828785b589f686725ff5bc3b9b25'>diff
path: root/include/drm/drm_pciids.h
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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_pciids.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_pciids.h')