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authorLinus Torvalds <torvalds@linux-foundation.org>2012-07-22 10:45:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-22 10:45:05 -0700
commit16d286e656250859946786de0df0fb01f8f241bc (patch)
treea3835959bec829f094f31a84c8100c3d7c740046 /.gitignore
parentceee0e95b67401ea34118a54369496ecdfb9a199 (diff)
parent5c09d127a112a78f95572921af88224f4091eb44 (diff)
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU changes from Ingo Molnar: "Quoting from Paul, the major features of this series are: 1. Preventing latency spikes of more than 200 microseconds for kernels built with NR_CPUS=4096, which is reportedly becoming the default for some distros. This is a first step, as it does not help with systems that actually -have- 4096 CPUs (work on this case is in progress, but is not yet ready for mainline). This category also includes improving concurrency of rcu_barrier(), placed here due to conflicts. Posted to LKML at: https://lkml.org/lkml/2012/6/22/381 Note that patches 18-22 of that series have been defered to 3.7, as they have not yet proven themselves to be mainline-ready (and yes, these are the ones intended to get rid of RCU's latency spikes for systems that actually have 4096 CPUs). 2. Updates to documentation and rcutorture fixes, the latter category including improvements to rcu_barrier() testing. Posted to LKML at http://lkml.indiana.edu/hypermail/linux/kernel/1206.1/04094.html. 3. Miscellaneous fixes posted to LKML at: https://lkml.org/lkml/2012/6/22/500 with the exception of the last commit, which was posted here: http://www.gossamer-threads.com/lists/linux/kernel/1561830 4. RCU_FAST_NO_HZ fixes and improvements. Posted to LKML at: http://lkml.indiana.edu/hypermail/linux/kernel/1206.1/00006.html http://www.gossamer-threads.com/lists/linux/kernel/1561833 The first four patches of the first series went into 3.5 to fix a regression. 5. Code-style fixes. These were posted to LKML at http://lkml.indiana.edu/hypermail/linux/kernel/1205.2/01180.html http://lkml.indiana.edu/hypermail/linux/kernel/1205.2/01181.html" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (48 commits) rcu: Fix broken strings in RCU's source code. rcu: Fix code-style issues involving "else" rcu: Introduce check for callback list/count mismatch rcu: Make RCU_FAST_NO_HZ respect nohz= boot parameter rcu: Fix qlen_lazy breakage rcu: Round FAST_NO_HZ lazy timeout to nearest second rcu: The rcu_needs_cpu() function is not a quiescent state rcu: Dump only the current CPU's buffers for idle-entry/exit warnings rcu: Add check for CPUs going offline with callbacks queued rcu: Disable preemption in rcu_blocking_is_gp() rcu: Prevent uninitialized string in RCU CPU stall info rcu: Fix rcu_is_cpu_idle() #ifdef in TINY_RCU rcu: Split RCU core processing out of __call_rcu() rcu: Prevent __call_rcu() from invoking RCU core on offline CPUs rcu: Make __call_rcu() handle invocation from idle rcu: Remove function versions of __kfree_rcu and __is_kfree_rcu_offset rcu: Consolidate tree/tiny __rcu_read_{,un}lock() implementations rcu: Remove return value from rcu_assign_pointer() key: Remove extraneous parentheses from rcu_assign_keypointer() rcu: Remove return value from RCU_INIT_POINTER() ...
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