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Subject[GIT PULL] uprobes: pre-filtering
Ingo, please pull from

git:// 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.

Srikar, the only patch you did not ack explicitely is 1fecb96d
"Do not allocate current->utask unnecessary", but afaics you do not

And the patch from Josh which exports uprobe_register/unregister for modules.
Christoph (cc'ed) doesn't like this change, but I disagree. Whatever you
think about systemtap it is the widely used tool, and uprobes can have other
out-of-tree users. This is like kprobes, kprobe_register() is exported but
it doesn't have a modular in-kernel user too. I do not see why should we
limit the usage of uprobes.

Josh Stone (1):
uprobes: Add exports for module use

Oleg Nesterov (26):
uprobes: Move __set_bit(UPROBE_SKIP_SSTEP) into alloc_uprobe()
uprobes: Kill the "uprobe != NULL" check in uprobe_unregister()
uprobes: Kill the pointless inode/uc checks in register/unregister
uprobes: Kill uprobe_consumer->filter()
uprobes: Introduce filter_chain()
uprobes: _unregister() should always do register_for_each_vma(false)
uprobes: _register() should always do register_for_each_vma(true)
uprobes: Introduce uprobe->register_rwsem
uprobes: Change filter_chain() to iterate ->consumers list
uprobes: Kill UPROBE_RUN_HANDLER flag
uprobes: Kill uprobe->copy_mutex
uprobes: Kill uprobe_events, use RB_EMPTY_ROOT() instead
uprobes: Introduce uprobe_is_active()
uprobes: Kill uprobes_mutex[], separate alloc_uprobe() and __uprobe_register()
uprobes: Rationalize the usage of filter_chain()
uprobes: Reintroduce uprobe_consumer->filter()
uprobes: Teach handler_chain() to filter out the probed task
uprobes/x86: Change __skip_sstep() to actually skip the whole insn
uprobes: Change handle_swbp() to expose bp_vaddr to handler_chain()
uprobes: Move alloc_page() from xol_add_vma() to xol_alloc_area()
uprobes: Fold xol_alloc_area() into get_xol_area()
uprobes: Turn add_utask() into get_utask()
uprobes: Do not play with utask in xol_get_insn_slot()
uprobes: Fix utask->xol_vaddr leak in pre_ssout()
uprobes: Do not allocate current->utask unnecessary
uprobes: Kill the bogus IS_ERR_VALUE(xol_vaddr) check

arch/x86/kernel/uprobes.c | 4 +-
include/linux/uprobes.h | 17 ++-
kernel/events/uprobes.c | 433 ++++++++++++++++++++++---------------------
kernel/ptrace.c | 6 +
kernel/trace/trace_uprobe.c | 5 +-
5 files changed, 243 insertions(+), 222 deletions(-)

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