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| author | Paul E. McKenney <[email protected]> | 2021-04-29 18:18:01 +0000 |
|---|---|---|
| committer | Paul E. McKenney <[email protected]> | 2021-05-13 16:13:23 +0000 |
| commit | 1893afd63409111c6edcee9d6e1196fc06cf4fd7 (patch) | |
| tree | 7e69c09686f67289eacdabcd4f25e8471230c93e /lib/bitmap.c | |
| parent | rcu: Create an unrcu_pointer() to remove __rcu from a pointer (diff) | |
| download | kernel-1893afd63409111c6edcee9d6e1196fc06cf4fd7.tar.gz kernel-1893afd63409111c6edcee9d6e1196fc06cf4fd7.zip | |
rcu: Improve comments describing RCU read-side critical sections
There are a number of places that call out the fact that preempt-disable
regions of code now act as RCU read-side critical sections, where
preempt-disable regions of code include irq-disable regions of code,
bh-disable regions of code, hardirq handlers, and NMI handlers. However,
someone relying solely on (for example) the call_rcu() header comment
might well have no idea that preempt-disable regions of code have RCU
semantics.
This commit therefore updates the header comments for
call_rcu(), synchronize_rcu(), rcu_dereference_bh_check(), and
rcu_dereference_sched_check() to call out these new(ish) forms of RCU
readers.
Reported-by: Michel Lespinasse <[email protected]>
[ paulmck: Apply Matthew Wilcox and Michel Lespinasse feedback. ]
Signed-off-by: Paul E. McKenney <[email protected]>
Diffstat (limited to 'lib/bitmap.c')
0 files changed, 0 insertions, 0 deletions