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 PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 6 Oct 2015 10:38:07 -0700 From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> To: Josh Triplett <josh@...htriplett.org> Cc: linux-kernel@...r.kernel.org, mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com, akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com, tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com, dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com, bobby.prani@...il.com Subject: Re: [PATCH tip/core/rcu 0/13] Miscellaneous fixes for 4.4 On Tue, Oct 06, 2015 at 10:23:51AM -0700, Josh Triplett wrote: > On Tue, Oct 06, 2015 at 09:13:05AM -0700, Paul E. McKenney wrote: > > Hello! > > > > This series contains miscellaneous fixes: > > > > 1. Export sched_setscheduler_nocheck() so that the new locktorture > > rtmutex_lock tests can be run as modules, courtesy of Davidlohr > > Bueso. > > > > 2. Use rcu_callback_t in call_rcu*() and friends to improve > > readability and to make cscope able to find them, courtesy of > > Boqun Feng. > > > > 3. Use call_rcu_func_t to replace explicit type equivalents when > > defining RCU callback functions, courtesy of Boqun Feng. > > > > 4. Don't unnecessarily disable preemption for Tiny and Tree > > RCU readers (only for preemptible RCU readers), courtesy > > of Boqun Feng. > > > > 5. Eliminate boot-time panic when a silly boot-time fanout is > > specified. > > > > 6. Add online/offline info to help debug stall-warning messages. > > > > 7. Move preemption disabling out of __srcu_read_lock() into > > srcu_read_lock(). > > > > 8. Finish folding ->fqs_state into ->gp_state, courtesy of Petr Mladek. > > > > 9. Correct comment for values of ->gp_state field. > > > > 10. Add rcu_pointer_handoff() to allow explicit marking of handing > > off protection from RCU to some other means, such as locking > > or reference counting. > > > > 11. Make list_entry_rcu() use lockless_dereference(), courtesy > > of Patrick Marlier. Despite the fact that this patch > > does nothing more than eliminate a single store and a > > single load of an unshared stack variable it nevertheless > > manages to provide a measurable performance increase: > > http://people.csail.mit.edu/amatveev/RLU_SOSP2015.pdf > > > > 12. Remove deprecated rcu_lockdep_assert(). > > (And a patch 13 not mentioned here.) Oops... "Use WRITE_ONCE() when deleting from reader-visible list" included to make KTSAN happier. > I responded to patches 4, 6, and 10 with feedback; for the rest (and for > those with the issues addressed): > > Reviewed-by: Josh Triplett <josh@...htriplett.org> Thank you for the review and comments! Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists