/* * sysfs.h - sysfs support declarations. * * Copyright (C) 2005-2014 Nippon Telegraph and Telephone Corporation. * Copyright (C) 2014 HGST, Inc., a Western Digital Company. * * 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. * * Written by Vyacheslav Dubeyko */ #ifndef _NILFS_SYSFS_H #define _NILFS_SYSFS_H #include #define NILFS_ROOT_GROUP_NAME "nilfs2" /* * struct nilfs_sysfs_dev_subgroups - device subgroup kernel objects * @sg_superblock_kobj: /sys/fs///superblock * @sg_superblock_kobj_unregister: completion state * @sg_segctor_kobj: /sys/fs///segctor * @sg_segctor_kobj_unregister: completion state * @sg_mounted_snapshots_kobj: /sys/fs///mounted_snapshots * @sg_mounted_snapshots_kobj_unregister: completion state * @sg_checkpoints_kobj: /sys/fs///checkpoints * @sg_checkpoints_kobj_unregister: completion state * @sg_segments_kobj: /sys/fs///segments * @sg_segments_kobj_unregister: completion state */ struct nilfs_sysfs_dev_subgroups { /* /sys/fs///superblock */ struct kobject sg_superblock_kobj; struct completion sg_superblock_kobj_unregister; /* /sys/fs///segctor */ struct kobject sg_segctor_kobj; struct completion sg_segctor_kobj_unregister; /* /sys/fs///mounted_snapshots */ struct kobject sg_mounted_snapshots_kobj; struct completion sg_mounted_snapshots_kobj_unregister; /* /sys/fs///checkpoints */ struct kobject sg_checkpoints_kobj; struct completion sg_checkpoints_kobj_unregister; /* /sys/fs///segments */ struct kobject sg_segments_kobj; struct completion sg_segments_kobj_unregister; }; #define NILFS_COMMON_ATTR_STRUCT(name) \ struct nilfs_##name##_attr { \ struct attribute attr; \ ssize_t (*show)(struct kobject *, struct attribute *, \ char *); \ ssize_t (*store)(struct kobject *, struct attribute *, \ const char *, size_t); \ } NILFS_COMMON_ATTR_STRUCT(feature); #define NILFS_DEV_ATTR_STRUCT(name) \ struct nilfs_##name##_attr { \ struct attribute attr; \ ssize_t (*show)(struct nilfs_##name##_attr *, struct the_nilfs *, \ char *); \ ssize_t (*store)(struct nilfs_##name##_attr *, struct the_nilfs *, \ const char *, size_t); \ } NILFS_DEV_ATTR_STRUCT(dev); NILFS_DEV_ATTR_STRUCT(segments); NILFS_DEV_ATTR_STRUCT(mounted_snapshots); NILFS_DEV_ATTR_STRUCT(checkpoints); NILFS_DEV_ATTR_STRUCT(superblock); NILFS_DEV_ATTR_STRUCT(segctor); #define NILFS_CP_ATTR_STRUCT(name) \ struct nilfs_##name##_attr { \ struct attribute attr; \ ssize_t (*show)(struct nilfs_##name##_attr *, struct nilfs_root *, \ char *); \ ssize_t (*store)(struct nilfs_##name##_attr *, struct nilfs_root *, \ const char *, size_t); \ } NILFS_CP_ATTR_STRUCT(snapshot); #define NILFS_ATTR(type, name, mode, show, store) \ static struct nilfs_##type##_attr nilfs_##type##_attr_##name = \ __ATTR(name, mode, show, store) #define NILFS_INFO_ATTR(type, name) \ NILFS_ATTR(type, name, 0444, NULL, NULL) #define NILFS_RO_ATTR(type, name) \ NILFS_ATTR(type, name, 0444, nilfs_##type##_##name##_show, NULL) #define NILFS_RW_ATTR(type, name) \ NILFS_ATTR(type, name, 0644, \ nilfs_##type##_##name##_show, \ nilfs_##type##_##name##_store) #define NILFS_FEATURE_INFO_ATTR(name) \ NILFS_INFO_ATTR(feature, name) #define NILFS_FEATURE_RO_ATTR(name) \ NILFS_RO_ATTR(feature, name) #define NILFS_FEATURE_RW_ATTR(name) \ NILFS_RW_ATTR(feature, name) #define NILFS_DEV_INFO_ATTR(name) \ NILFS_INFO_ATTR(dev, name) #define NILFS_DEV_RO_ATTR(name) \ NILFS_RO_ATTR(dev, name) #define NILFS_DEV_RW_ATTR(name) \ NILFS_RW_ATTR(dev, name) #define NILFS_SEGMENTS_RO_ATTR(name) \ NILFS_RO_ATTR(segments, name) #define NILFS_SEGMENTS_RW_ATTR(name) \ NILFS_RW_ATTR(segs_info, name) #define NILFS_MOUNTED_SNAPSHOTS_RO_ATTR(name) \ NILFS_RO_ATTR(mounted_snapshots, name) #define NILFS_CHECKPOINTS_RO_ATTR(name) \ NILFS_RO_ATTR(checkpoints, name) #define NILFS_CHECKPOINTS_RW_ATTR(name) \ NILFS_RW_ATTR(checkpoints, name) #define NILFS_SNAPSHOT_INFO_ATTR(name) \ NILFS_INFO_ATTR(snapshot, name) #define NILFS_SNAPSHOT_RO_ATTR(name) \ NILFS_RO_ATTR(snapshot, name) #define NILFS_SNAPSHOT_RW_ATTR(name) \ NILFS_RW_ATTR(snapshot, name) #define NILFS_SUPERBLOCK_RO_ATTR(name) \ NILFS_RO_ATTR(superblock, name) #define NILFS_SUPERBLOCK_RW_ATTR(name) \ NILFS_RW_ATTR(superblock, name) #define NILFS_SEGCTOR_INFO_ATTR(name) \ NILFS_INFO_ATTR(segctor, name) #define NILFS_SEGCTOR_RO_ATTR(name) \ NILFS_RO_ATTR(segctor, name) #define NILFS_SEGCTOR_RW_ATTR(name) \ NILFS_RW_ATTR(segctor, name) #define NILFS_FEATURE_ATTR_LIST(name) \ (&nilfs_feature_attr_##name.attr) #define NILFS_DEV_ATTR_LIST(name) \ (&nilfs_dev_attr_##name.attr) #define NILFS_SEGMENTS_ATTR_LIST(name) \ (&nilfs_segments_attr_##name.attr) #define NILFS_MOUNTED_SNAPSHOTS_ATTR_LIST(name) \ (&nilfs_mounted_snapshots_attr_##name.attr) #define NILFS_CHECKPOINTS_ATTR_LIST(name) \ (&nilfs_checkpoints_attr_##name.attr) #define NILFS_SNAPSHOT_ATTR_LIST(name) \ (&nilfs_snapshot_attr_##name.attr) #define NILFS_SUPERBLOCK_ATTR_LIST(name) \ (&nilfs_superblock_attr_##name.attr) #define NILFS_SEGCTOR_ATTR_LIST(name) \ (&nilfs_segctor_attr_##name.attr) #endif /* _NILFS_SYSFS_H */ ext.git/commit/drivers/usb/isp1760/isp1760-if.c?id=24c2503255d35c269b67162c397a1a1c1e02f6ce'>24c2503255d35c269b67162c397a1a1c1e02f6ce (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 'drivers/usb/isp1760/isp1760-if.c')