On Mon, Oct 13, 2008 at 04:34:17PM -0700, David Daney wrote: > The patch is required on SMP systems as without it you get: > > BUG: using smp_processor_id() in preemptible [00000000] code: cat/687 > caller is show_cpuinfo+0xc4/0x500 > Call Trace: > [<ffffffff8111f4c8>] dump_stack+0x8/0x38 > [<ffffffff812c235c>] debug_smp_processor_id+0xec/0x100 > [<ffffffff8112de64>] show_cpuinfo+0xc4/0x500 > [<ffffffff811d4128>] seq_read+0x2f8/0x420 > [<ffffffff811fb658>] proc_reg_read+0x90/0xd8 > [<ffffffff811b05ec>] vfs_read+0xbc/0x160 > [<ffffffff811b0a88>] sys_read+0x50/0x98 > [<ffffffff81129224>] handle_sysn32+0x44/0x84 Uh indeed, makes sense ... Ralf