CPU stall-warning changes for 3.8
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- v1 Latest4 patches 0 repliesNew
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | rcu: Print remote CPU's stacks in stall warningsinclude/ kernel/ kernel/ | +32 | 0 replies | |
| 2/4 | rcu: Add grace-period information to RCU CPU stall warningskernel/ | +5 | 0 replies | |
| 3/4 | rcu: Dump number of callbacks in stall warning messageskernel/ | +11 | 0 replies | |
| 4/4 | rcu: Provide RCU CPU stall warnings for tiny RCUkernel/ kernel/ kernel/ +4 more | +123 | 0 replies |
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Cover letter [PATCH tip/core/rcu 0/4] CPU stall-warning changes for 3.8
Hello!
This patch series adds updates to RCU's CPU stall warning capability, with patches as follows:
1. For architectures without NMI-based stack-dump capability,
have the current CPU remotely access the stalled CPU's stack to dump it.
2. Include the number of the last grace period started and completed
in RCU CPU stall warning messages.
3. Dump the number of RCU callbacks on the system in order to help
diagnose situations where spurious grace periods were started.
4. Prototype patch to provide RCU CPU stall warning messages for
Tiny RCU.
Thanx, Paul
b/include/linux/sched.h | 2 b/kernel/rcu.h | 7 +++ b/kernel/rcupdate.c | 52 +++++++++++++++++++++++++ b/kernel/rcutiny.c | 6 +- b/kernel/rcutiny_plugin.h | 56 +++++++++++++++++++++++++++ b/kernel/rcutree.c | 94 +++++++++++++++++++++------------------------- b/kernel/rcutree.h | 5 -- b/kernel/sched/core.c | 6 ++ b/lib/Kconfig.debug | 2 9 files changed, 171 insertions(+), 59 deletions(-)