On 01/24, Ingo Molnar wrote: > > * Oleg Nesterov <o...@redhat.com> wrote: > > > Ingo, please pull from > > > > git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc uprobes/core > > > > Mostly pre-filtering. This needs more work and perhaps more functionality. > > In particular, perhaps dup_mmap() should remove the unwanted breakpoints. > > And we can add more ->filter() hooks to, say, speedup uprobe_register(). > > Plus we can do some optimizations to avoid register_for_each_vma() in > > case when we know that all mm's were previously acked/nacked. > > The kernel side looks good to me - but how does 'perf uprobe' > make use of it in practice, how can I test it?
Unfortunately, currently there is no in-kernel user of pre-filtering. I'll try to implement the pid-base filtering at least for tracing/uprobe_events, but this needs a time. Not only I am not familiar with this code, I am not sure how this interface should actually look. And I agree, perf should be able to use it somehow, perhaps at least to allow to probe a single task/mm. Oleg. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
