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Groups > linux.kernel > #1542446
| From | Boqun Feng <boqun.feng@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [RFC v2 0/5] rcu: Introduce for_each_leaf_node_cpu() |
| Date | 2016-12-15 03:50 +0100 |
| Message-ID | <sOuhj-8sr-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
v1:
https://marc.info/?l=linux-kernel&m=148127336205765
Changes since v1:
* Rename the primitive to for_each_leaf_node_cpu() for a shorter and
hopefully better name
* Fix a bug report by Colin King about bit shifting
* Drop iterator @bit based on suggestions from Mark Rutland
* Add a WARN_ON_ONCE() for !cpu_possible(cpu).
Based on -rcu's rcu/dev branch, commit 278c19fe5bc7 "rcu: Adjust FQS offline
checks for exact online-CPU detection". Tested by 0day and rcutorture on a
12-cpu host, the results of rcutorture are all fine except:
TREE07 ------- 7655 grace periods (4.25278 per second)
WARNING: BAD SEQ 3901:3901 last:7652 version 61
/home/boqun/linux/tools/testing/selftests/rcutorture/res/2016.12.14-13:17:10/TREE07/console.log
WARNING: Assertion failure in /home/boqun/linux/tools/testing/selftests/rcutorture/res/2016.12.14-13:17:10/TREE07/console.log
WARNING: Summary: Stalls: 4
CPU count limited from 16 to 12
The same WARNING could be reproduced without this patchset. Paul, given the
sentence "CPU count limited from 16 to 12", is this just a problem for my
setup? Maybe I should descrease the SMP numbers or increase
rcutorture.stat_interval?
Regards,
Boqun
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[RFC v2 0/5] rcu: Introduce for_each_leaf_node_cpu() Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 03:50 +0100
[RFC v2 1/5] rcu: Introduce for_each_leaf_node_cpu() Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 03:50 +0100
Re: [RFC v2 1/5] rcu: Introduce for_each_leaf_node_cpu() Mark Rutland <mark.rutland@arm.com> - 2016-12-15 12:50 +0100
Re: [RFC v2 1/5] rcu: Introduce for_each_leaf_node_cpu() Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 15:40 +0100
Re: [RFC v2 1/5] rcu: Introduce for_each_leaf_node_cpu() Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 16:20 +0100
Re: [RFC v2 1/5] rcu: Introduce for_each_leaf_node_cpu() Mark Rutland <mark.rutland@arm.com> - 2016-12-15 16:20 +0100
[RFC v2.1 1/5] rcu: Introduce for_each_leaf_node_cpu() Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 16:30 +0100
Re: [RFC v2.1 1/5] rcu: Introduce for_each_leaf_node_cpu() Mark Rutland <mark.rutland@arm.com> - 2016-12-15 16:40 +0100
[RFC v2 2/5] rcu: Use for_each_leaf_node_cpu() in RCU stall checking Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 03:50 +0100
[RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 03:50 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Mark Rutland <mark.rutland@arm.com> - 2016-12-15 13:10 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 15:50 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Colin Ian King <colin.king@canonical.com> - 2016-12-15 16:00 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Boqun Feng <boqun.feng@gmail.com> - 2016-12-19 16:20 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-12-20 06:10 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Boqun Feng <boqun.feng@gmail.com> - 2016-12-20 07:00 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Boqun Feng <boqun.feng@gmail.com> - 2016-12-20 09:20 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-12-20 16:40 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-12-20 16:30 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Boqun Feng <boqun.feng@gmail.com> - 2016-12-21 03:40 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-12-21 04:50 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Boqun Feng <boqun.feng@gmail.com> - 2016-12-21 05:20 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-12-21 17:50 +0100
Re: [RFC v2 4/5] rcu: Use for_each_leaf_node_cpu() in force_qs_rnp() Boqun Feng <boqun.feng@gmail.com> - 2016-12-22 02:10 +0100
[RFC v2 5/5] rcu: Use for_each_leaf_node_cpu() in online CPU iteration Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 03:50 +0100
[RFC v2 3/5] rcu: Use for_each_leaf_node_cpu() in ->expmask iteration Boqun Feng <boqun.feng@gmail.com> - 2016-12-15 03:50 +0100
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