linux-kernel - [GIT PULL] locking/urgent for v5.9-rc6

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Date:   Sun, 20 Sep 2020 21:51:20 +0200
From:   Borislav Petkov <bp@...e.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] locking/urgent for v5.9-rc6

Hi Linus,

please pull two fixes from the locking/urgent pile.

Thx.

---

The following changes since commit fc3abb53250a90ba2150eebd182137c136f4d25a:

  Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid (2020-09-02 12:55:46 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/locking_urgent_for_v5.9_rc6

for you to fetch changes up to e6b1a44eccfcab5e5e280be376f65478c3b2c7a2:

  locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count (2020-09-16 16:26:56 +0200)

----------------------------------------------------------------
* Fix lockdep's detection of "USED" <- "IN-NMI" inversions, from Peter
  Zijlstra.

* Make percpu-rwsem operations on the semaphore's ->read_count IRQ-safe
  because it can be used in an IRQ context, from Hou Tao.

----------------------------------------------------------------
Hou Tao (1):
      locking/percpu-rwsem: Use this_cpu_{inc,dec}() for read_count

peterz@...radead.org (1):
      locking/lockdep: Fix "USED" <- "IN-NMI" inversions

 include/linux/percpu-rwsem.h       |  8 ++++----
 kernel/locking/lockdep.c           | 35 +++++++++++++++++++++++++++++------
 kernel/locking/lockdep_internals.h |  2 ++
 kernel/locking/percpu-rwsem.c      |  4 ++--
 4 files changed, 37 insertions(+), 12 deletions(-)
-- 
Regards/Gruss,
    Boris.

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