Changeset 235d31d in mainline

Timestamp:
2014-12-22T17:47:40Z (11 years ago)
Author:
Jakub Jermar <jakub@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
8c7d5ad
Parents:
eae91e0 (diff), 759ea0d (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.
Message:

Merge the CHT pre-integration branch

This branch contains:

  • the merge of lp:~adam-hraska+lp/helenos/rcu, which brings:
  • a new preemptible kernel RCU variant called A-RCU,
  • a preemptible variant of Podzimek's non-preemptible kernel RCU and
  • a new variant of usersace RCU,
  • a new concurrent hash table (CHT) implementation based on RCU,
  • a deployment of CHT in kernel futex handling,
  • a deployment of the userspace RCU in the implementation of upgradable futexes,

all described in Adam Hraska's master thesis named Read-Copy-Update
for HelenOS, defended in 2013 at MFF UK; furthemore, the branch
fixes two synchronization bugs in condvars and waitq, respectively:

  • revid:adam.hraska+hos@gmail.com-20121116144921-3to9u1tn1sg07rg7
  • revid:adam.hraska+hos@gmail.com-20121116173623-km7gwtqixwudpe66
  • build fixes required to pass make check
  • overhaul of ia64 and sparc64 trap handling, to allow exc_dispatch() to be used now when the kernel is more picky about CPU state accounting
  • an important fix of the sparc64/sun4v preemptible trap handler
  • various other fixes of issues discovered on non-x86 architectures
Files:
44 added
140 edited

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