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authorLinus Torvalds <torvalds@linux-foundation.org>2024-01-13 03:35:58 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2024-01-13 03:35:58 +0300
commit23a80d462c67406303df852d58b745b8618acc4a (patch)
tree1e9eac77be49bf6f6b6704cef87a5a1006c1ae3e /Documentation/admin-guide
parent38814330fedd778edffcabe0c8cb462ee365782e (diff)
parent7dfb03dd24d43b9e7a725e70d2e8a83bb29df294 (diff)
downloadlinux-23a80d462c67406303df852d58b745b8618acc4a.tar.xz
Merge tag 'rcu.release.v6.8' of https://github.com/neeraju/linux
Pull RCU updates from Neeraj Upadhyay: - Documentation and comment updates - RCU torture, locktorture updates that include cleanups; nolibc init build support for mips, ppc and rv64; testing of mid stall duration scenario and fixing fqs task creation conditions - Misc fixes, most notably restricting usage of RCU CPU stall notifiers, to confine their usage primarily to debug kernels - RCU tasks minor fixes - lockdep annotation fix for NMI-safe accesses, callback advancing/acceleration cleanup and documentation improvements * tag 'rcu.release.v6.8' of https://github.com/neeraju/linux: rcu: Force quiescent states only for ongoing grace period doc: Clarify historical disclaimers in memory-barriers.txt doc: Mention address and data dependencies in rcu_dereference.rst doc: Clarify RCU Tasks reader/updater checklist rculist.h: docs: Fix wrong function summary Documentation: RCU: Remove repeated word in comments srcu: Use try-lock lockdep annotation for NMI-safe access. srcu: Explain why callbacks invocations can't run concurrently srcu: No need to advance/accelerate if no callback enqueued srcu: Remove superfluous callbacks advancing from srcu_gp_start() rcu: Remove unused macros from rcupdate.h rcu: Restrict access to RCU CPU stall notifiers rcu-tasks: Mark RCU Tasks accesses to current->rcu_tasks_idle_cpu rcutorture: Add fqs_holdoff check before fqs_task is created rcutorture: Add mid-sized stall to TREE07 rcutorture: add nolibc init support for mips, ppc and rv64 locktorture: Increase Hamming distance between call_rcu_chain and rcu_call_chains
Diffstat (limited to 'Documentation/admin-guide')
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 505af40e97bc..6ee0f9a5da70 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5313,6 +5313,12 @@
Dump ftrace buffer after reporting RCU CPU
stall warning.
+ rcupdate.rcu_cpu_stall_notifiers= [KNL]
+ Provide RCU CPU stall notifiers, but see the
+ warnings in the RCU_CPU_STALL_NOTIFIER Kconfig
+ option's help text. TL;DR: You almost certainly
+ do not want rcupdate.rcu_cpu_stall_notifiers.
+
rcupdate.rcu_cpu_stall_suppress= [KNL]
Suppress RCU CPU stall warning messages.