Hi, On Thu, Apr 14, 2011 at 10:49 PM, javaweb zhang <javawebzwp@xxxxxxxxx> wrote: > Hello, everyone. I use alloc_bootmem() in profile.c to allocate a big memory > at function profile_init(), how I know whether it is success? The following > is my code: > // at kernel/profile.c > ctxsw_A = (struct ctxsw_rec *)alloc_bootmem(sizeof(struct ctxsw_rec)*CTXSW); > ctxsw_rec is a struct which declared in include/linux/profile.h, CTXSW = > 4>>10 Looking at the source code for alloc_bootmem, it returns a NULL pointer (which is what most allocators do when the allocation fails). It appears that it will hit a panic first though, so you may never get to the receiving the NULL. -- Dave Hylands Shuswap, BC, Canada http://www.davehylands.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
