• Keith Owens's avatar
    [IA64] Extend notify_die() hooks for IA64 · 9138d581
    Keith Owens authored
    notify_die() added for MCA_{MONARCH,SLAVE,RENDEZVOUS}_{ENTER,PROCESS,LEAVE} and
    INIT_{MONARCH,SLAVE}_{ENTER,PROCESS,LEAVE}.  We need multiple
    notification points for these events because they can take many seconds
    to run which has nasty effects on the behaviour of the rest of the
    system.
    
    DIE_SS replaced by a generic DIE_FAULT which checks the vector number,
    to allow interception of faults other than SS.
    
    DIE_MACHINE_{HALT,RESTART} added to allow last minute close down
    processing, especially when the halt/restart routines are called from
    error handlers.
    
    DIE_OOPS added.
    
    The check for kprobe's break numbers has been moved from traps.c to
    kprobes.c, allowing DIE_BREAK to be used for any additional break
    numbers, i.e. it is no longer kprobes specific.
    
    Hooks for kernel debuggers and kernel dumpers added, ENTER and LEAVE.
    Both of these disable the system for long periods which impact on
    watchdogs and heartbeat systems in general.  More patches to come that
    use these events to reset watchdogs and heartbeats.
    
    unregister_die_notifier() added and both routines exported.  Requested
    by Dean Nelson.
    
    Lock removed from {un,}register_die_notifier.  notifier_chain_register()
    already takes a lock.  Also the generic notifier chain locking is being
    reworked to distinguish between callbacks that can block and those that
    cannot, the lock in {un,}register_die_notifier would interfere with
    that change.  http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
    
    Leading white space removed from arch/ia64/kernel/kprobes.c.
    
    Typo in mca.c in original version of this patch found & fixed by Dean
    Nelson.
    Signed-off-by: default avatarKeith Owens <kaos@sgi.com>
    Acked-by: default avatarDean Nelson <dcn@sgi.com>
    Acked-by: default avatarAnil Keshavamurthy <anil.s.keshavamurthy@intel.com>
    Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
    9138d581
traps.c 17.6 KB