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author | Paul E. McKenney <paulmck@kernel.org> | 2023-05-16 03:41:37 -0700 |
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committer | Paul E. McKenney <paulmck@kernel.org> | 2023-07-19 13:19:41 -0700 |
commit | 6716f4d39c17febf7aa4fa5f5923da67a8d10e85 (patch) | |
tree | 9faa35c8bf56eefa066d76cb2087c29744cb3ed0 /include/linux/rcupdate_wait.h | |
parent | 06c2afb862f9da8dc5efa4b6076a0e48c3fbaaa5 (diff) | |
download | linux-stable-6716f4d39c17febf7aa4fa5f5923da67a8d10e85.tar.gz linux-stable-6716f4d39c17febf7aa4fa5f5923da67a8d10e85.tar.bz2 linux-stable-6716f4d39c17febf7aa4fa5f5923da67a8d10e85.zip |
rcu: Update synchronize_rcu_mult() comment for call_rcu_hurry()
Those who have worked with RCU for some time will naturally think in
terms of the long-standing call_rcu() API rather than the much newer
call_rcu_hurry() API. But it is call_rcu_hurry() that you should normally
pass to synchronize_rcu_mult(). This commit therefore updates the header
comment to point this out.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Diffstat (limited to 'include/linux/rcupdate_wait.h')
-rw-r--r-- | include/linux/rcupdate_wait.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/rcupdate_wait.h b/include/linux/rcupdate_wait.h index 699b938358bf..5e0f74f2f8ca 100644 --- a/include/linux/rcupdate_wait.h +++ b/include/linux/rcupdate_wait.h @@ -42,6 +42,11 @@ do { \ * call_srcu() function, with this wrapper supplying the pointer to the * corresponding srcu_struct. * + * Note that call_rcu_hurry() should be used instead of call_rcu() + * because in kernels built with CONFIG_RCU_LAZY=y the delay between the + * invocation of call_rcu() and that of the corresponding RCU callback + * can be multiple seconds. + * * The first argument tells Tiny RCU's _wait_rcu_gp() not to * bother waiting for RCU. The reason for this is because anywhere * synchronize_rcu_mult() can be called is automatically already a full |