On Fri, 2010-01-15 at 18:38 +0530, Srikar Dronamraju wrote: > * Peter Zijlstra <pet...@infradead.org> [2010-01-15 11:33:27]: > > > > > > Uprobes layer would need to be notified of process life-time events > > > like fork/clone/exec/exit. > > > > No so much the process lifetimes as the vma life times are interesting, > > placing a hook in the vm code to track that isn't too hard, > > > > > It also needs to know > > > - when a breakpoint is hit > > > - stop and resume a thread. > > > > A simple hook in the trap code is done quickly enough, and no reason to > > stop the thread, its not going anywhere when it traps. > > > > > > Some of the threads could be executing in the vicinity of the > breakpoint when it is getting inserted or deleted. Wont we need to > stop/quiesce those threads?
The easy answer it so use kstopmachine to patch the code, the slightly more complex would be using something like: http://lkml.org/lkml/2010/1/12/300
