linux-kernel - [PATCH v2 0/5] padata flushing and CPU hotplug fixes

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Date:   Wed, 28 Aug 2019 18:14:20 -0400
From:   Daniel Jordan <daniel.m.jordan@...cle.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        Steffen Klassert <steffen.klassert@...unet.com>
Cc:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Daniel Jordan <daniel.m.jordan@...cle.com>
Subject: [PATCH v2 0/5] padata flushing and CPU hotplug fixes

Hi,
Here are some miscellaneous padata fixes, mostly to do with CPU hotplug.
This time around there's a new hotplug state to make the CPU remove path
cleaner, and the CC list grew a bit.

Daniel

v2:
 - patches 1-3 are new; 4-5 have changed since v1[*]
 - attempted to fix padata flushing as requested (Herbert)
 - changed hotplug state in which __padata_remove_cpu() is
   called (Herbert)
 - purged cpumask_clear_cpu() calls from same function (Herbert)
 - dropped v1's patch 3/2 (Herbert)
 - after more thought, left the Fixes: tag on the last patch the same

testing:
 - testcase was tcrypt mode=215 sec=1 throughout
 - ran all cpumask combos among parallel cpumasks, serial cpumasks, and CPU
   hotplug in a 3-CPU VM
 - lockdep to check patch 4
 - tested at each patch in this set with and without
   CONFIG_CRYPTO_PCRYPT

Series based on recent mainline plus all padata patches in cryptodev:
    git://oss.oracle.com/git/linux-dmjordan.git padata-cpuhp-v2

[*] https://lore.kernel.org/linux-crypto/20190809192857.26585-1-daniel.m.jordan@oracle.com/

Daniel Jordan (5):
  padata: make flushing work with async users
  padata: remove reorder_objects
  padata: get rid of padata_remove_cpu() for real
  padata: always acquire cpu_hotplug_lock before pinst->lock
  padata: validate cpumask without removed CPU during offline

 Documentation/padata.txt   | 18 ++------
 include/linux/cpuhotplug.h |  1 +
 include/linux/padata.h     |  5 +-
 kernel/padata.c            | 95 +++++++++++---------------------------
 4 files changed, 36 insertions(+), 83 deletions(-)


base-commit: d1abaeb3be7b5fa6d7a1fbbd2e14e3310005c4c1
prerequisite-patch-id: a5bfed8ea60d5a784b8b3e21ccb5657ced2aa1e3
prerequisite-patch-id: 96d53aecccb5af242ba5ee342d75810ecd9bfb84
prerequisite-patch-id: 965d8a63c1461f00219aec2d817f2ca85d49cfb3
prerequisite-patch-id: 8e6c2988331b46c9467ac568157c6c575cbe6578
-- 
2.23.0