On Fri, Dec 27, 2013 at 10:16 AM, Guibin(Bill) Tian <gbtian@xxxxxxxxx> wrote: > Hi, > I am doing a very simple operation at the method of ip_queue_xmit in > ip_output.c. > The code is very simple. > > char *p = kmalloc(48, GFP_KERNEL); > kfree(p); > > This will be called every time this method is called. > > But the result is that the whole system is not responsive at all. This is a > very simple, not sure what I am doing wrong. Can anybody help? Other than what others have said, IMHO it is better to avoid such rapid alloc/free, assuming your code fragment is running on every packet reception/sending. Instead, I suggest to allocate the memory before the ip_queue_xmit and use-reuse it inside ip_queue_xmit. -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
