* Oleg Nesterov <[email protected]> wrote:
> OK, nobody has comments. Ingo, please pull from
>
> git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc uprobes/core
>
> Changes:
> - fix the conflict with d24d7dbf which added the (unsafe) check
> into create_trace_uprobe()
>
> - drop "Kill the "uprobe != NULL" check in uprobe_unregister()",
> the same patch from Sasha Levin was already applied as c91368c4
>
> - drop "perf: Ensure we do not free event->parent before event"
> http://marc.info/?l=linux-kernel&m=136000475509419
>
> Currently it is not necessary and it wasn't reviewed. But perhaps
> I'll resend it later.
>
> Simple performance test:
>
> # time perl -e 'syscall -1 for 1..100_000'
> real 0m0.040s
> user 0m0.027s
> sys 0m0.010s
>
> # perf probe -x /lib/libc.so.6 syscall
> # perf record -e probe_libc:syscall sleep 100 &
>
> Before this series:
>
> # time perl -e 'syscall -1 for 1..100_000'
> real 0m1.714s
> user 0m0.103s
> sys 0m1.607s
>
> After:
> real 0m0.037s
> user 0m0.013s
> sys 0m0.023s
>
> The untraced process is not penalized.
>
> Josh Stone (1):
> uprobes: Add exports for module use
>
> Oleg Nesterov (37):
> uprobes: Move __set_bit(UPROBE_SKIP_SSTEP) into alloc_uprobe()
> 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
> uprobes/tracing: Fix dentry/mount leak in create_trace_uprobe()
> uprobes/tracing: Fully initialize uprobe_trace_consumer before
> uprobe_register()
> uprobes/tracing: Ensure inode != NULL in create_trace_uprobe()
> uprobes/tracing: Introduce is_trace_uprobe_enabled()
> uprobes/tracing: Kill uprobe_trace_consumer, embed uprobe_consumer into
> trace_uprobe
> uprobes/perf: Always increment trace_uprobe->nhit
> perf: Introduce hw_perf_event->tp_target and ->tp_list
> uprobes: Introduce uprobe_apply()
> uprobes/perf: Teach trace_uprobe/perf code to track the active
> perf_event's
> uprobes/perf: Teach trace_uprobe/perf code to pre-filter
> uprobes/perf: Teach trace_uprobe/perf code to use UPROBE_HANDLER_REMOVE
> uprobes/perf: Avoid uprobe_apply() whenever possible
>
> arch/x86/kernel/uprobes.c | 4 +-
> include/linux/perf_event.h | 9 +-
> include/linux/uprobes.h | 23 ++-
> kernel/events/core.c | 5 +-
> kernel/events/uprobes.c | 465
> +++++++++++++++++++++++--------------------
> kernel/ptrace.c | 6 +
> kernel/trace/trace_probe.h | 1 -
> kernel/trace/trace_uprobe.c | 217 +++++++++++++++-----
> 8 files changed, 456 insertions(+), 274 deletions(-)
Pulled, thanks a lot Oleg!
Ingo
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