diff options
| -rw-r--r-- | Documentation/RCU/RTFP.txt | 858 | ||||
| -rw-r--r-- | Documentation/RCU/rcubarrier.txt | 12 | ||||
| -rw-r--r-- | Documentation/RCU/torture.txt | 10 | ||||
| -rw-r--r-- | Documentation/memory-barriers.txt | 10 | ||||
| -rw-r--r-- | Documentation/timers/NO_HZ.txt | 44 | ||||
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 7 | ||||
| -rw-r--r-- | include/linux/debugobjects.h | 6 | ||||
| -rw-r--r-- | include/linux/ftrace_event.h | 34 | ||||
| -rw-r--r-- | include/linux/jiffies.h | 8 | ||||
| -rw-r--r-- | include/linux/rculist.h | 5 | ||||
| -rw-r--r-- | include/linux/rcupdate.h | 26 | ||||
| -rw-r--r-- | include/trace/events/rcu.h | 82 | ||||
| -rw-r--r-- | init/Kconfig | 1 | ||||
| -rw-r--r-- | kernel/rcu.h | 12 | ||||
| -rw-r--r-- | kernel/rcupdate.c | 102 | ||||
| -rw-r--r-- | kernel/rcutiny.c | 2 | ||||
| -rw-r--r-- | kernel/rcutiny_plugin.h | 2 | ||||
| -rw-r--r-- | kernel/rcutorture.c | 396 | ||||
| -rw-r--r-- | kernel/rcutree.c | 255 | ||||
| -rw-r--r-- | kernel/rcutree.h | 19 | ||||
| -rw-r--r-- | kernel/rcutree_plugin.h | 460 | ||||
| -rw-r--r-- | kernel/time/Kconfig | 50 | ||||
| -rw-r--r-- | kernel/trace/trace.h | 3 | ||||
| -rw-r--r-- | kernel/trace/trace_printk.c | 19 | ||||
| -rw-r--r-- | lib/debugobjects.c | 20 |
25 files changed, 1610 insertions, 833 deletions
diff --git a/Documentation/RCU/RTFP.txt b/Documentation/RCU/RTFP.txt index 7f40c72a9c51..273e654d7d08 100644 --- a/Documentation/RCU/RTFP.txt +++ b/Documentation/RCU/RTFP.txt @@ -39,7 +39,7 @@ in read-mostly situations. This algorithm does take pains to avoid write-side contention and parallelize the other write-side overheads by providing a fine-grained locking design, however, it would be interesting to see how much of the performance advantage reported in 1990 remains -in 2004. +today. At about this same time, Adams [Adams91] described ``chaotic relaxation'', where the normal barriers between successive iterations of convergent @@ -86,9 +86,9 @@ DYNIX/ptx kernel. The corresponding conference paper appeared in 1998 [McKenney98]. In 1999, the Tornado and K42 groups described their "generations" -mechanism, which quite similar to RCU [Gamsa99]. These operating systems -made pervasive use of RCU in place of "existence locks", which greatly -simplifies locking hierarchies. +mechanism, which is quite similar to RCU [Gamsa99]. These operating +systems made pervasive use of RCU in place of "existence locks", which +greatly simplifies locking hierarchies and helps avoid deadlocks. 2001 saw the first RCU presentation involving Linux [McKenney01a] at OLS. The resulting abundance of RCU patches was presented the @@ -106,8 +106,11 @@ these techniques still impose significant read-side overhead in the form of memory barriers. Researchers at Sun worked along similar lines in the same timeframe [HerlihyLM02]. These techniques can be thought of as inside-out reference counts, where the count is represented by the -number of hazard pointers referencing a given data structure (rather than -the more conventional counter field within the data structure itself). +number of hazard pointers referencing a given data structure rather than +the more conventional counter field within the data structure itself. +The key advantage of inside-out reference counts is that they can be +stored in immortal variables, thus allowing races between access and +deletion to be avoided. By the same token, RCU can be thought of as a "bulk reference count", where some form of reference counter covers all reference by a given CPU @@ -179,7 +182,25 @@ tree using software transactional memory to protect concurrent updates (strange, but true!) [PhilHoward2011RCUTMRBTree], yet another variant of RCU-protected resizeable hash tables [Triplett:2011:RPHash], the 3.0 RCU trainwreck [PaulEMcKenney2011RCU3.0trainwreck], and Neil Brown's "Meet the -Lockers" LWN article [NeilBrown2011MeetTheLockers]. +Lockers" LWN article [NeilBrown2011MeetTheLockers]. Some academic +work looked at debugging uses of RCU [Seyster:2011:RFA:2075416.2075425]. + +In 2012, Josh Triplett received his Ph.D. with his dissertation +covering RCU-protected resizable hash tables and the relationship +between memory barriers and read-side traversal order: If the updater +is making changes in the opposite direction from the read-side traveral +order, the updater need only execute a memory-barrier instruction, +but if in the same direction, the updater needs to wait for a grace +period between the individual updates [JoshTriplettPhD]. Also in 2012, +after seventeen years of attempts, an RCU paper made it into a top-flight +academic journal, IEEE Transactions on Parallel and Distributed Systems +[MathieuDesnoyers2012URCU]. A group of researchers in Spain applied +user-level RCU to crowd simulation [GuillermoVigueras2012RCUCrowd], and +another group of researchers in Europe produced a formal description of +RCU based on separation logic [AlexeyGotsman2012VerifyGraceExtended], +which was published in the 2013 European Symposium on Programming +[AlexeyGotsman2013ESOPRCU]. + Bibtex Entries @@ -193,13 +214,12 @@ Bibtex Entries ,volume="5" ,number="3" ,pages="354-382" -,note="Available: -\url{http://portal.acm.org/citation.cfm?id=320619&dl=GUIDE,} -[Viewed December 3, 2007]" ,annotation={ Use garbage collector to clean up data after everyone is done with it. . Oldest use of something vaguely resembling RCU that I have found. + http://portal.acm.org/citation.cfm?id=320619&dl=GUIDE, + [Viewed December 3, 2007] } } @@ -309,7 +329,7 @@ for Programming Languages and Operating Systems}" ,doi = {http://doi.acm.org/10.1145/42392.42399} ,publisher = {ACM} ,address = {New York, NY, USA} -,annotation= { +,annotation={ At the top of page 307: "Conflicts with deposits and withdrawals are necessary if the reported total is to be up to date. They could be avoided by having total return a sum that is slightly @@ -346,8 +366,9 @@ for Programming Languages and Operating Systems}" } } -@Book{Adams91 -,Author="Gregory R. Adams" +# Was Adams91, see also syncrefs.bib. +@Book{Andrews91textbook +,Author="Gregory R. Andrews" ,title="Concurrent Programming, Principles, and Practices" ,Publisher="Benjamin Cummins" ,Year="1991" @@ -398,39 +419,39 @@ for Programming Languages and Operating Systems}" } } -@conference{Pu95a, -Author = "Calton Pu and Tito Autrey and Andrew Black and Charles Consel and +@conference{Pu95a +,Author = "Calton Pu and Tito Autrey and Andrew Black and Charles Consel and Crispin Cowan and Jon Inouye and Lakshmi Kethana and Jonathan Walpole and -Ke Zhang", -Title = "Optimistic Incremental Specialization: Streamlining a Commercial -Operating System", -Booktitle = "15\textsuperscript{th} ACM Symposium on -Operating Systems Principles (SOSP'95)", -address = "Copper Mountain, CO", -month="December", -year="1995", -pages="314-321", -annotation=" +Ke Zhang" +,Title = "Optimistic Incremental Specialization: Streamlining a Commercial +,Operating System" +,Booktitle = "15\textsuperscript{th} ACM Symposium on +,Operating Systems Principles (SOSP'95)" +,address = "Copper Mountain, CO" +,month="December" +,year="1995" +,pages="314-321" +,annotation={ Uses a replugger, but with a flag to signal when people are using the resource at hand. Only one reader at a time. -" -} - -@conference{Cowan96a, -Author = "Crispin Cowan and Tito Autrey and Charles Krasic and -Calton Pu and Jonathan Walpole", -Title = "Fast Concurrent Dynamic Linking for an Adaptive Operating System", -Booktitle = "International Conference on Configurable Distributed Systems -(ICCDS'96)", -address = "Annapolis, MD", -month="May", -year="1996", -pages="108", -isbn="0-8186-7395-8", -annotation=" +} +} + +@conference{Cowan96a +,Author = "Crispin Cowan and Tito Autrey and Charles Krasic and +,Calton Pu and Jonathan Walpole" +,Title = "Fast Concurrent Dynamic Linking for an Adaptive Operating System" +,Booktitle = "International Conference on Configurable Distributed Systems +(ICCDS'96)" +,address = "Annapolis, MD" +,month="May" +,year="1996" +,pages="108" +,isbn="0-8186-7395-8" +,annotation={ Uses a replugger, but with a counter to signal when people are using the resource at hand. Allows multiple readers. -" +} } @techreport{Slingwine95 @@ -493,14 +514,13 @@ Problems" ,Year="1998" ,pages="509-518" ,Address="Las Vegas, NV" -,note="Available: -\url{http://www.rdrop.com/users/paulmck/RCU/rclockpdcsproof.pdf} -[Viewed December 3, 2007]" ,annotation={ Describes and analyzes RCU mechanism in DYNIX/ptx. Describes application to linked list update and log-buffer flushing. Defines 'quiescent state'. Includes both measured and analytic evaluation. + http://www.rdrop.com/users/paulmck/RCU/rclockpdcsproof.pdf + [Viewed December 3, 2007] } } @@ -514,13 +534,12 @@ Operating System Design and Implementation}" ,Year="1999" ,pages="87-100" ,Address="New Orleans, LA" -,note="Available: -\url{http://www.usenix.org/events/osdi99/full_papers/gamsa/gamsa.pdf} -[Viewed August 30, 2006]" ,annotation={ Use of RCU-like facility in K42/Tornado. Another independent invention of RCU. See especially pages 7-9 (Section 5). + http://www.usenix.org/events/osdi99/full_papers/gamsa/gamsa.pdf + [Viewed August 30, 2006] } } @@ -611,9 +630,9 @@ Orran Krieger and Rusty Russell and Dipankar Sarma and Maneesh Soni" ,note="Available: \url{http://marc.theaimsgroup.com/?l=linux-kernel&m=100259266316456&w=2} [Viewed June 23, 2004]" -,annotation=" +,annotation={ Memory-barrier and Alpha thread. 100 messages, not too bad... -" +} } @unpublished{Spraul01 @@ -624,10 +643,10 @@ Orran Krieger and Rusty Russell and Dipankar Sarma and Maneesh Soni" ,note="Available: \url{http://marc.theaimsgroup.com/?l=linux-kernel&m=100264675012867&w=2} [Viewed June 23, 2004]" -,annotation=" +,annotation={ Suggested burying memory barriers in Linux's list-manipulation primitives. -" +} } @unpublished{LinusTorvalds2001a @@ -638,6 +657,8 @@ Orran Krieger and Rusty Russell and Dipankar Sarma and Maneesh Soni" ,note="Available: \url{http://lkml.org/lkml/2001/10/13/105} [Viewed August 21, 2004]" +,annotation={ +} } @unpublished{Blanchard02a @@ -657,10 +678,10 @@ Orran Krieger and Rusty Russell and Dipankar Sarma and Maneesh Soni" ,Month="June" ,Year="2002" ,pages="289-300" -,annotation=" +,annotation={ Measured scalability of Linux 2.4 kernel's directory-entry cache (dcache), and measured some scalability enhancements. -" +} } @Conference{McKenney02a @@ -674,10 +695,10 @@ Andrea Arcangeli and Andi Kleen and Orran Krieger and Rusty Russell" ,note="Available: \url{http://www.linux.org.uk/~ajh/ols2002_proceedings.pdf.gz} [Viewed June 23, 2004]" -,annotation=" +,annotation={ Presented and compared a number of RCU implementations for the Linux kernel. -" +} } @unpublished{Sarma02a @@ -688,9 +709,9 @@ Andrea Arcangeli and Andi Kleen and Orran Krieger and Rusty Russell" ,note="Available: \url{http://marc.theaimsgroup.com/?l=linux-kernel&m=102645767914212&w=2} [Viewed June 23, 2004]" -,annotation=" +,annotation={ Compare fastwalk and RCU for dcache. RCU won. -" +} } @unpublished{Barbieri02 @@ -701,9 +722,9 @@ Andrea Arcangeli and Andi Kleen and Orran Krieger and Rusty Russell" ,note="Available: \url{http://marc.theaimsgroup.com/?l=linux-kernel&m=103082050621241&w=2} [Viewed: June 23, 2004]" -,annotation=" +,annotation={ Suggested RCU for vfs\_shared\_cred. -" +} } @unpublished{Dickins02a @@ -722,10 +743,10 @@ Andrea Arcangeli and Andi Kleen and Orran Krieger and Rusty Russell" ,note="Available: \url{http://marc.theaimsgroup.com/?l=linux-kernel&m=103462075416638&w=2} [Viewed June 23, 2004]" -,annotation=" +,annotation={ Performance of dcache RCU on kernbench for 16x NUMA-Q and 1x, 2x, and 4x systems. RCU does no harm, and helps on 16x. -" +} } @unpublished{LinusTorvalds2003a @@ -736,14 +757,14 @@ Andrea Arcangeli and Andi Kleen and Orran Krieger and Rusty Russell" ,note="Available: \url{http://lkml.org/lkml/2003/3/9/205} [Viewed March 13, 2006]" -,annotation=" +,annotation={ Linus suggests replacing brlock with RCU and/or seqlocks: . 'It's entirely possible that the current user could be replaced by RCU and/or seqlocks, and we could get rid of brlocks entirely.' . Steve Hemminger responds by replacing them with RCU. -" +} } @article{Appavoo03a @@ -758,9 +779,9 @@ B. Rosenburg and M. Stumm and J. Xenidis" ,volume="42" ,number="1" ,pages="60-76" -,annotation=" +,annotation={ Use of RCU to enable hot-swapping for autonomic behavior in K42. -" +} } @unpublished{Seigh03 @@ -769,9 +790,9 @@ B. Rosenburg and M. Stumm and J. Xenidis" ,Year="2003" ,Month="March" ,note="email correspondence" -,annotation=" +,annotation={ Described the relationship of the VM/XA passive serialization to RCU. -" +} } @Conference{Arcangeli03 @@ -785,14 +806,12 @@ Dipankar Sarma" ,year="2003" ,month="June" ,pages="297-310" -,note="Available: -\url{http://www.rdrop.com/users/paulmck/RCU/rcu.FREENIX.2003.06.14.pdf} -[Viewed November 21, 2007]" -,annotation=" +,annotation={ Compared updated RCU implementations for the Linux kernel, and described System V IPC use of RCU, including order-of-magnitude performance improvements. -" + http://www.rdrop.com/users/paulmck/RCU/rcu.FREENIX.2003.06.14.pdf +} } @Conference{Soules03a @@ -820,10 +839,10 @@ Michal Ostrowski and Bryan Rosenburg and Jimi Xenidis" ,note="Available: \url{http://www.linuxjournal.com/article/6993} [Viewed November 14, 2007]" -,annotation=" +,annotation={ Reader-friendly intro to RCU, with the infamous old-man-and-brat cartoon. -" +} } @unpublished{Sarma03a @@ -832,7 +851,9 @@ Michal Ostrowski and Bryan Rosenburg and Jimi Xenidis" ,month="December" ,year="2003" ,note="Message ID: 20031222180114.GA2248@in.ibm.com" -,annotation="dipankar/ct.2004.03.27/RCUll.2003.12.22.patch" +,annotation={ + dipankar/ct.2004.03.27/RCUll.2003.12.22.patch +} } @techreport{Friedberg03a @@ -844,11 +865,11 @@ Michal Ostrowski and Bryan Rosenburg and Jimi Xenidis" ,number="US Patent 6,662,184" ,month="December" ,pages="112" -,annotation=" +,annotation={ Applies RCU to a wildcard-search Patricia tree in order to permit synchronization-free lookup. RCU is used to retain removed nodes for a grace period before freeing them. -" +} } @article{McKenney04a @@ -860,12 +881,11 @@ Michal Ostrowski and Bryan Rosenburg and Jimi Xenidis" ,volume="1" ,number="118" ,pages="38-46" -,note="Available: -\url{http://www.linuxjournal.com/node/7124} -[Viewed December 26, 2010]" -,annotation=" +,annotation={ Reader friendly intro to dcache and RCU. -" + http://www.linuxjournal.com/node/7124 + [Viewed December 26, 2010] +} } @Conference{McKenney04b @@ -879,10 +899,10 @@ Michal Ostrowski and Bryan Rosenburg and Jimi Xenidis" \url{http://www.linux.org.au/conf/2004/abstracts.html#90} \url{http://www.rdrop.com/users/paulmck/RCU/lockperf.2004.01.17a.pdf} [Viewed June 23, 2004]" -,annotation=" +,annotation={ Compares performance of RCU to that of other locking primitives over a number of CPUs (x86, Opteron, Itanium, and PPC). -" +} } @unpublished{Sarma04a @@ -891,7 +911,9 @@ Michal Ostrowski and Bryan Rosenburg and Jimi Xenidis" ,month="March" ,year="2004" ,note="\url{http://marc.theaimsgroup.com/?l=linux-kernel&m=108003746402892&w=2}" -,annotation="Head of thread: dipankar/2004.03.23/rcu-low-lat.1.patch" +,annotation={ + Head of thread: dipankar/2004.03.23/rcu-low-lat.1.patch +} } @unpublished{Sarma04b @@ -900,7 +922,9 @@ Michal Ostrowski and Bryan Rosenburg and Jimi Xenidis" ,month="March" ,year="2004" ,note="\url{http://marc.theaimsgroup.com/?l=linux-kernel&m=108016474829546&w=2}" -,annotation="dipankar/rcuth.2004.03.24/rcu-throttle.patch" +,annotation={ + dipankar/rcuth.2004.03.24/rcu-throttle.patch +} } @unpublished{Spraul04a @@ -911,9 +935,9 @@ Michal Ostrowski and Bryan Rosenburg and Jimi Xenidis" ,note="Available: \url{http://marc.theaimsgroup.com/?l=linux-kernel&m=108546407726602&w=2} [Viewed June 23, 2004]" -,annotation=" +,annotation={ Hierarchical-bitmap patch for RCU infrastructure. -" +} } @unpublished{Steiner04a @@ -950,10 +974,12 @@ Realtime Applications" ,year="2004" ,month="June" ,pages="182-191" -,annotation=" +,annotation={ Describes and compares a number of modifications to the Linux RCU implementation that make it friendly to realtime applications. -" + https://www.usenix.org/conference/2004-usenix-annual-technical-conference/making-rcu-safe-deep-sub-millisecond-response + [Viewed July 26, 2012] +} } @phdthesis{PaulEdwardMcKenneyPhD @@ -964,14 +990,13 @@ in Operating System Kernels" ,school="OGI School of Science and Engineering at Oregon Health and Sciences University" ,year="2004" -,note="Available: -\url{http://www.rdrop.com/users/paulmck/RCU/RCUdissertation.2004.07.14e1.pdf} -[Viewed October 15, 2004]" -,annotation=" +,annotation={ Describes RCU implementations and presents design patterns corresponding to common uses of RCU in several operating-system kernels. -" + http://www.rdrop.com/users/paulmck/RCU/RCUdissertation.2004.07.14e1.pdf + [Viewed October 15, 2004] +} } @unpublished{PaulEMcKenney2004rcu:dereference @@ -982,9 +1007,9 @@ Oregon Health and Sciences University" ,note="Available: \url{http://lkml.org/lkml/2004/8/6/237} [Viewed June 8, 2010]" -,annotation=" +,annotation={ Introduce rcu_dereference(). -" +} } @unpublished{JimHouston04a @@ -995,11 +1020,11 @@ Oregon Health and Sciences University" ,note="Available: \url{http://lkml.org/lkml/2004/8/30/87} [Viewed February 17, 2005]" -,annotation=" +,annotation={ Uses active code in rcu_read_lock() and rcu_read_unlock() to make RCU happen, allowing RCU to function on CPUs that do not receive a scheduling-clock interrupt. -" +} } @unpublished{TomHart04a @@ -1010,9 +1035,9 @@ Oregon Health and Sciences University" ,note="Available: \url{http://www.cs.toronto.edu/~tomhart/masters_thesis.html} [Viewed October 15, 2004]" -,annotation=" +,annotation={ Proposes comparing RCU to lock-free methods for the Linux kernel. -" +} } @unpublished{Vaddagiri04a @@ -1023,9 +1048,9 @@ Oregon Health and Sciences University" ,note="Available: \url{http://marc.theaimsgroup.com/?t=109395731700004&r=1&w=2} [Viewed October 18, 2004]" -,annotation=" +,annotation={ Srivatsa's RCU patch for tcp_ehash lookup. -" +} } @unpublished{Thirumalai04a @@ -1036,9 +1061,9 @@ Oregon Health and Sciences University" ,note="Available: \url{http://marc.theaimsgroup.com/?t=109144217400003&r=1&w=2} [Viewed October 18, 2004]" -,annotation=" +,annotation={ Ravikiran's lockfree FD patch. -" +} } @unpublished{Thirumalai04b @@ -1049,9 +1074,9 @@ Oregon Health and Sciences University" ,note="Available: \url{http://marc.theaimsgroup.com/?l=linux-kernel&m=109152521410459&w=2} [Viewed October 18, 2004]" -,annotation=" +,annotation={ Ravikiran's lockfree FD patch. -" +} } @unpublished{PaulEMcKenney2004rcu:assign:pointer @@ -1062,9 +1087,9 @@ Oregon Health and Sciences University" ,note="Available: \url{http://lkml.org/lkml/2004/10/23/241} [Viewed June 8, 2010]" -,annotation=" +,annotation={ Introduce rcu_assign_pointer(). -" +} } @unpublished{JamesMorris04a @@ -1073,12 +1098,12 @@ Oregon Health and Sciences University" ,day="15" ,month="November" ,year="2004" -,note="Available: -\url{http://marc.theaimsgroup.com/?l=linux-kernel&m=110054979416004&w=2} -[Viewed December 10, 2004]" -,annotation=" +,note="\url{http://marc.theaimsgroup.com/?l=linux-kernel&m=110054979416004&w=2}" +,annotation={ James Morris posts Kaigai Kohei's patch to LKML. -" + [Viewed December 10, 2004] + Kaigai's patch is at https://lkml.org/lkml/2004/9/27/52 +} } @unpublished{JamesMorris04b @@ -1089,9 +1114,9 @@ Oregon Health and Sciences University" ,note="Available: \url{http://www.livejournal.com/users/james_morris/2153.html} [Viewed December 10, 2004]" -,annotation=" +,annotation={ RCU helps SELinux performance. ;-) Made LWN. -" +} } @unpublished{PaulMcKenney2005RCUSemantics @@ -1103,9 +1128,9 @@ Oregon Health and Sciences University" ,note="Available: \url{http://www.rdrop.com/users/paulmck/RCU/rcu-semantics.2005.01.30a.pdf} [Viewed December 6, 2009]" -,annotation=" +,annotation={ Early derivation of RCU semantics. -" +} } @unpublished{PaulMcKenney2005e @@ -1117,10 +1142,10 @@ Oregon Health and Sciences University" ,note="Available: \url{http://lkml.org/lkml/2005/3/17/199} [Viewed September 5, 2005]" -,annotation=" +,annotation={ First posting showing how RCU can be safely adapted for preemptable RCU read side critical sections. -" +} } @unpublished{EsbenNeilsen2005a @@ -1132,12 +1157,12 @@ Oregon Health and Sciences University" ,note="Available: \url{http://lkml.org/lkml/2005/3/18/122} [Viewed March 30, 2006]" -,annotation=" +,annotation={ Esben Neilsen suggests read-side suppression of grace-period processing for crude-but-workable realtime RCU. The downside - is indefinite grace periods...But this is OK for experimentation + is indefinite grace periods... But this is OK for experimentation and testing. -" +} } @unpublished{TomHart05a @@ -1149,10 +1174,10 @@ Data Structures" ,note="Available: \url{ftp://ftp.cs.toronto.edu/csrg-technical-reports/515/} [Viewed March 4, 2005]" -,annotation=" +,annotation={ Comparison of RCU, QBSR, and EBSR. RCU wins for read-mostly workloads. ;-) -" +} } @unpublished{JonCorbet2005DeprecateSyncKernel @@ -1164,10 +1189,10 @@ Data Structures" ,note="Available: \url{http://lwn.net/Articles/134484/} [Viewed May 3, 2005]" -,annotation=" +,annotation={ Jon Corbet describes deprecation of synchronize_kernel() in favor of synchronize_rcu() and synchronize_sched(). -" +} } @unpublished{PaulMcKenney05a @@ -1178,10 +1203,10 @@ Data Structures" ,note="Available: \url{http://lkml.org/lkml/2005/5/9/185} [Viewed May 13, 2005]" -,annotation=" +,annotation={ First publication of working lock-based deferred free patches for the CONFIG_PREEMPT_RT environment. -" +} } @conference{PaulMcKenney05b @@ -1194,10 +1219,10 @@ Data Structures" ,note="Available: \url{http://www.rdrop.com/users/paulmck/RCU/realtimeRCU.2005.04.23a.pdf} [Viewed May 13, 2005]" -,annotation=" +,annotation={ Realtime turns into making RCU yet more realtime friendly. http://lca2005.linux.org.au/Papers/Paul%20McKenney/Towards%20Hard%20Realtime%20Response%20from%20the%20Linux%20Kernel/LKS.2005.04.22a.pdf -" +} } @unpublished{PaulEMcKenneyHomePage @@ -1208,9 +1233,9 @@ Data Structures" ,note="Available: \url{http://www.rdrop.com/users/paulmck/} [Viewed May 25, 2005]" -,annotation=" +,annotation={ Paul McKenney's home page. -" +} } @unpublished{PaulEMcKenneyRCUPage @@ -1221,9 +1246,9 @@ Data Structures" ,note="Available: \url{http://www.rdrop.com/users/paulmck/RCU} [Viewed May 25, 2005]" -,annotation=" +,annotation={ Paul McKenney's RCU page. -" +} } @unpublished{JosephSeigh2005a @@ -1232,10 +1257,10 @@ Data Structures" ,month="July" ,year="2005" ,note="Personal communication" -,annotation=" +,annotation={ Joe Seigh announcing his atomic-ptr-plus project. http://sourceforge.net/projects/atomic-ptr-plus/ -" +} } @unpublished{JosephSeigh2005b @@ -1247,9 +1272,9 @@ Data Structures" ,note="Available: \url{http://sourceforge.net/projects/atomic-ptr-plus/} [Viewed August 8, 2005]" -,annotation=" +,annotation={ Joe Seigh's atomic-ptr-plus project. -" +} } @unpublished{PaulMcKenney2005c @@ -1261,9 +1286,9 @@ Data Structures" ,note="Available: \url{http://lkml.org/lkml/2005/8/1/155} [Viewed March 14, 2006]" -,annotation=" +,annotation={ First operating counter-based realtime RCU patch posted to LKML. -" +} } @unpublished{PaulMcKenney2005d @@ -1275,11 +1300,11 @@ Data Structures" ,note="Available: \url{http://lkml.org/lkml/2005/8/8/108} [Viewed March 14, 2006]" -,annotation=" +,annotation={ First operating counter-based realtime RCU patch posted to LKML, but fixed so that various unusual combinations of configuration parameters all function properly. -" +} } @unpublished{PaulMcKenney2005rcutorture @@ -1291,9 +1316,25 @@ Data Structures" ,note="Available: \url{http://lkml.org/lkml/2005/10/1/70} [Viewed March 14, 2006]" -,annotation=" +,annotation={ First rcutorture patch. -" +} +} + +@unpublished{DavidSMiller2006HashedLocking +,Author="David S. Miller" +,Title="Re: [{PATCH}, {RFC}] {RCU} : {OOM} avoidance and lower latency" +,month="January" +,day="6" +,year="2006" +,note="Available: +\url{https://lkml.org/lkml/2006/1/7/22} +[Viewed February 29, 2012]" +,annotation={ + David Miller's view on hashed arrays of locks: used to really + like it, but time he saw an opportunity for this technique, + something else always proved superior. Partitioning or RCU. ;-) +} } @conference{ThomasEHart2006a @@ -1309,10 +1350,10 @@ Distributed Processing Symposium" ,note="Available: \url{http://www.rdrop.com/users/paulmck/RCU/hart_ipdps06.pdf} [Viewed April 28, 2008]" -,annotation=" +,annotation={ Compares QSBR, HPBR, EBR, and lock-free reference counting. http://www.cs.toronto.edu/~tomhart/perflab/ipdps06.tgz -" +} } @unpublished{NickPiggin2006radixtree @@ -1324,9 +1365,9 @@ Distributed Processing Symposium" ,note="Available: \url{http://lkml.org/lkml/2006/6/20/238} [Viewed March 25, 2008]" -,annotation=" +,annotation={ RCU-protected radix tree. -" +} } @Conference{PaulEMcKenney2006b @@ -1341,9 +1382,9 @@ Suparna Bhattacharya" \url{http://www.linuxsymposium.org/2006/view_abstract.php?content_key=184} \url{http://www.rdrop.com/users/paulmck/RCU/OLSrtRCU.2006.08.11a.pdf} [Viewed January 1, 2007]" -,annotation=" +,annotation={ Described how to improve the -rt implementation of realtime RCU. -" +} } @unpublished{WikipediaRCU @@ -1354,12 +1395,11 @@ Canis Rufus and Zoicon5 and Anome and Hal Eisen" ,month="July" ,day="8" ,year="2006" -,note="Available: -\url{http://en.wikipedia.org/wiki/Read-copy-update} -[Viewed August 21, 2006]" -,annotation=" +,note="\url{http://en.wikipedia.org/wiki/Read-copy-update}" +,annotation={ Wikipedia RCU page as of July 8 2006. -" + [Viewed August 21, 2006] +} } @Conference{NickPiggin2006LocklessPageCache @@ -1372,9 +1412,9 @@ Canis Rufus and Zoicon5 and Anome and Hal Eisen" ,note="Available: \url{http://www.linuxsymposium.org/2006/view_abstract.php?content_key=184} [Viewed January 11, 2009]" -,annotation=" +,annotation={ Uses RCU-protected radix tree for a lockless page cache. -" +} } @unpublished{PaulEMcKenney2006c @@ -1388,9 +1428,9 @@ Canis Rufus and Zoicon5 and Anome and Hal Eisen" Revised: \url{http://www.rdrop.com/users/paulmck/RCU/srcu.2007.01.14a.pdf} [Viewed August 21, 2006]" -,annotation=" +,annotation={ LWN article introducing SRCU. -" +} } @unpublished{RobertOlsson2006a @@ -1399,12 +1439,11 @@ Revised: ,month="August" ,day="18" ,year="2006" -,note="Available: -\url{http://www.nada.kth.se/~snilsson/publications/TRASH/trash.pdf} -[Viewed March 4, 2011]" -,annotation=" +,note="\url{http://www.nada.kth.se/~snilsson/publications/TRASH/trash.pdf}" +,annotation={ RCU-protected dynamic trie-hash combination. -" + [Viewed March 4, 2011] +} } @unpublished{ChristophHellwig2006RCU2SRCU @@ -1426,10 +1465,10 @@ Revised: ,note="Available: \url{http://www.rdrop.com/users/paulmck/RCU/linuxusage.html} [Viewed January 14, 2007]" -,annotation=" +,annotation={ Paul McKenney's RCU page showing graphs plotting Linux-kernel usage of RCU. -" +} } @unpublished{PaulEMcKenneyRCUusageRawDataPage @@ -1440,10 +1479,10 @@ Revised: ,note="Available: \url{http://www.rdrop.com/users/paulmck/RCU/linuxusage/rculocktab.html} [Viewed January 14, 2007]" -,annotation=" +,annotation={ Paul McKenney's RCU page showing Linux usage of RCU in tabular form, with links to corresponding cscope databases. -" +} } @unpublished{GauthamShenoy2006RCUrwlock @@ -1455,13 +1494,13 @@ Revised: ,note="Available: \url{http://lkml.org/lkml/2006/10/26/73} [Viewed January 26, 2009]" -,annotation=" +,annotation={ RCU-based reader-writer lock that allows readers to proceed with no memory barriers or atomic instruction in absence of writers. If writer do show up, readers must of course wait as required by the semantics of reader-writer locking. This is a recursive lock. -" +} } @unpublished{JensAxboe2006SlowSRCU @@ -1474,11 +1513,11 @@ Revised: ,note="Available: \url{http://lkml.org/lkml/2006/11/17/56} [Viewed May 28, 2007]" -,annotation=" +,annotation={ SRCU's grace periods are too slow for Jens, even after a factor-of-three speedup. Sped-up version of SRCU at http://lkml.org/lkml/2006/11/17/359. -" +} } @unpublished{OlegNesterov2006QRCU @@ -1491,10 +1530,10 @@ Revised: ,note="Available: \url{http://lkml.org/lkml/2006/11/19/69} [Viewed May 28, 2007]" -,annotation=" +,annotation={ First cut of QRCU. Expanded/corrected versions followed. Used to be OlegNesterov2007QRCU, now time-corrected. -" +} } @unpublished{OlegNesterov2006aQRCU @@ -1506,10 +1545,10 @@ Revised: ,note="Available: \url{http://lkml.org/lkml/2006/11/29/330} [Viewed November 26, 2008]" -,annotation=" +,annotation={ Expanded/corrected version of QRCU. Used to be OlegNesterov2007aQRCU, now time-corrected. -" +} } @unpublished{EvgeniyPolyakov2006RCUslowdown @@ -1521,10 +1560,10 @@ Revised: ,note="Available: \url{http://www.ioremap.net/node/41} [Viewed October 28, 2008]" -,annotation=" +,annotation={ Using RCU as a pure delay leads to a 2.5x slowdown in skbs in the Linux kernel. -" +} } @inproceedings{ChrisMatthews2006ClusteredObjectsRCU @@ -1541,7 +1580,8 @@ Revised: ,annotation={ Uses K42's RCU-like functionality to manage clustered-object lifetimes. -}} +} +} @article{DilmaDaSilva2006K42 |