Re: [PATCH -next-20080709] fixup stop_machine use cpu mask vs ftrace

* Milton Miller [off-list ref] wrote:

Hi Rusty, Ingo.

Rusty's patch [PATCH 3/3] stop_machine: use cpu mask rather than magic 
numbers didn't find kernel/trace/ftrace.c in -next, causing an 
immediate almost NULL pointer dereference in ftrace_dynamic_init.

Rusty - what's going on here? Please do not change APIs like that, which 
cause code to crash. Either do a compatible API change, or change it 
over in a way that causes clear build failures, not crashes.

	Ingo