Hi, Naveen 2011/2/15 naveen yadav <yad.nav...@gmail.com>
> Hi All, > > I need small clarification for multicore linux kernel > > Case;1 > Kernel space: > > 1. If on two CPU's both running in kernel space and both crash at same > time t. what will happen will we get two crash dumps of registers or > single ? > > - when kernel dies in SMP environment, it needs to aquire > spin_lock(die_lock) to enter die(). > So the first one which get the lock earlier will handle die() first. > If the kernel is still alive then > the later one will enter die(). > If kernel is in panic, it shutdown the other cpus and halt the system. > So no one can do further jobs. > > > Case :2 > > User Space: > > 1. If on two CPU's both running in User space and both crash at same > time t. what will happen will we get two core files, Single core with > dump for both ? > > Thanks > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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