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| author |   Neeraj Upadhyay <neeraju@codeaurora.org> | 2021-08-25 12:40:50 +0530 |
|---|---|---|
| committer |   Paul E. McKenney <paulmck@kernel.org> | 2021-09-15 11:41:19 -0700 |
| commit | ed42c38067129c85ab1bda39f2fd91924a432dc0 (patch) | |
| tree | b010bfbb9807aee81c5ea8f1bc207d2b6af40439 /kernel/rcu | |
| parent | rcu-tasks: Clarify read side section info for rcu_tasks_rude GP primitives (diff) | |
| download | linux-dev-ed42c38067129c85ab1bda39f2fd91924a432dc0.tar.xz linux-dev-ed42c38067129c85ab1bda39f2fd91924a432dc0.zip | |
rcu-tasks: Fix read-side primitives comment for call_rcu_tasks_trace
call_rcu_tasks_trace() does have read-side primitives - rcu_read_lock_trace()
and rcu_read_unlock_trace(). Fix this information in the comments.
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tasks.h | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index 8c63b4d23829..47a29e411217 100644 --- a/kernel/rcu/tasks.h +++ b/kernel/rcu/tasks.h @@ -1207,15 +1207,11 @@ static void exit_tasks_rcu_finish_trace(struct task_struct *t) * @rhp: structure to be used for queueing the RCU updates. * @func: actual callback function to be invoked after the grace period * - * The callback function will be invoked some time after a full grace - * period elapses, in other words after all currently executing RCU - * read-side critical sections have completed. call_rcu_tasks_trace() - * assumes that the read-side critical sections end at context switch, - * cond_resched_rcu_qs(), or transition to usermode execution. As such, - * there are no read-side primitives analogous to rcu_read_lock() and - * rcu_read_unlock() because this primitive is intended to determine - * that all tasks have passed through a safe state, not so much for - * data-structure synchronization. + * The callback function will be invoked some time after a trace rcu-tasks + * grace period elapses, in other words after all currently executing + * trace rcu-tasks read-side critical sections have completed. These + * read-side critical sections are delimited by calls to rcu_read_lock_trace() + * and rcu_read_unlock_trace(). * * See the description of call_rcu() for more detailed information on * memory ordering guarantees. @@ -1231,7 +1227,7 @@ EXPORT_SYMBOL_GPL(call_rcu_tasks_trace); * * Control will return to the caller some time after a trace rcu-tasks * grace period has elapsed, in other words after all currently executing - * rcu-tasks read-side critical sections have elapsed. These read-side + * trace rcu-tasks read-side critical sections have elapsed. These read-side * critical sections are delimited by calls to rcu_read_lock_trace() * and rcu_read_unlock_trace(). * |