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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-15 21:10:12 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-15 21:10:12 +0200 |
| commit | 6c9fcaf2eec1b9f85226a694230dd957dd7926b3 (patch) | |
| tree | f8c824c6c64dc411752c844f116e693760768bcc /Documentation/RCU/NMI-RCU.txt | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pen... (diff) | |
| parent | rcu classic: update qlen when cpu offline (diff) | |
| download | linux-6c9fcaf2eec1b9f85226a694230dd957dd7926b3.tar.xz linux-6c9fcaf2eec1b9f85226a694230dd957dd7926b3.zip | |
Merge branch 'core/rcu' into core/rcu-for-linus
Diffstat (limited to 'Documentation/RCU/NMI-RCU.txt')
| -rw-r--r-- | Documentation/RCU/NMI-RCU.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/RCU/NMI-RCU.txt b/Documentation/RCU/NMI-RCU.txt index c64158ecde43..a6d32e65d222 100644 --- a/Documentation/RCU/NMI-RCU.txt +++ b/Documentation/RCU/NMI-RCU.txt @@ -93,6 +93,9 @@ Since NMI handlers disable preemption, synchronize_sched() is guaranteed not to return until all ongoing NMI handlers exit. It is therefore safe to free up the handler's data as soon as synchronize_sched() returns. +Important note: for this to work, the architecture in question must +invoke irq_enter() and irq_exit() on NMI entry and exit, respectively. + Answer to Quick Quiz |