[0/4] mmu notifier debug annotations/checks

Message

Daniel Vetter Aug. 20, 2019, 8:18 a.m. UTC

Hi all,

Here's the respin. Changes:

- 2 patches for checking return values of callbacks dropped, they landed

- move the lockdep annotations ahead, since I think that part is less
  contentious. lockdep map now also annotates invalidate_range_end, as
  requested by Jason.

- add a patch to prime lockdep, idea from Jason, let's hear whether the
  implementation fits.

- I've stuck with the non_block_start/end for now and not switched back to
  preempt_disable/enable, but with comments as suggested by Andrew.
  Hopefully that fits the bill, otherwise I can go back again if the
  consensus is more there.

Review, comments and ideas very much welcome.

Cheers, Daniel

Daniel Vetter (4):
  mm, notifier: Add a lockdep map for invalidate_range_start/end
  mm, notifier: Prime lockdep
  kernel.h: Add non_block_start/end()
  mm, notifier: Catch sleeping/blocking for !blockable

 include/linux/kernel.h       | 25 ++++++++++++++++++++++++-
 include/linux/mmu_notifier.h |  8 ++++++++
 include/linux/sched.h        |  4 ++++
 kernel/sched/core.c          | 19 ++++++++++++++-----
 mm/mmu_notifier.c            | 24 +++++++++++++++++++++++-
 5 files changed, 73 insertions(+), 7 deletions(-)