linux-kernel - [PATCH tip/core/rcu 0/10] Don not IPI offline CPUs, de-emphasize cond_resched_rcu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20171201192122.GA19301@linux.vnet.ibm.com>
Date:   Fri, 1 Dec 2017 11:21:22 -0800
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com
Subject: [PATCH tip/core/rcu 0/10] Don not IPI offline CPUs, de-emphasize
 cond_resched_rcu_qs()

Hello!

This series provides some fixes to prevent sending IPIs to offline
CPUs and also replaces most uses of cond_resched_rcu_qs() with the new
and improved cond_resched().  There are still a few remaining uses of
cond_resched_rcu_qs() in rcutorture because the mechanisms that strengthen
cond_resched() rely on RCU making forward progress.  This series contains:

1.	Stop resched_cpu() from sending IPIs to offline CPUs.

2.	Stop switched_to_rt() from sending IPIs to offline CPUs.

3.	Move netfilter from cond_resched_rcu_qs() to cond_resched().

4.	Move mm from cond_resched_rcu_qs() to cond_resched().

5.	Move workqueue from cond_resched_rcu_qs() to cond_resched().

6.	Move trace from cond_resched_rcu_qs() to cond_resched().

7.	Move softirq from cond_resched_rcu_qs() to cond_resched().

8.	Move fs from cond_resched_rcu_qs() to cond_resched().

9.	Remove cond_resched_rcu_qs() from documentation.

10.	Improve performance by accounting for rcu_all_qs() in cond_resched().

							Thanx, Paul

------------------------------------------------------------------------

 Documentation/RCU/Design/Data-Structures/Data-Structures.html |    3 ++-
 Documentation/RCU/Design/Requirements/Requirements.html       |    4 ++--
 Documentation/RCU/stallwarn.txt                               |   10 ++++------
 fs/file.c                                                     |    2 +-
 include/linux/rcupdate.h                                      |    2 +-
 kernel/sched/core.c                                           |    3 ++-
 kernel/sched/rt.c                                             |    2 +-
 kernel/softirq.c                                              |    2 +-
 kernel/trace/trace_benchmark.c                                |    2 +-
 kernel/workqueue.c                                            |    2 +-
 mm/mlock.c                                                    |    2 +-
 net/netfilter/nf_conntrack_core.c                             |    2 +-
 12 files changed, 18 insertions(+), 18 deletions(-)