Re: [PATCH tip/core/rcu 1/2] doc/kprobes: Update obsolete RCU update functions

[Masami Hiramatsu <mhiramat@kernel.org>]

On Tue, 26 Mar 2019 16:00:49 -0700
"Paul E. McKenney" <paulmck@linux.ibm.com> wrote:

> The RCU flavors have been consolidated, so this commit replaces mentions
> of the now-obsolete synchronize_sched() function with synchronize_rcu().

Thank you for updating!

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>

> 
> Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
> Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Masami Hiramatsu <mhiramat@kernel.org>
> Cc: Jonathan Corbet <corbet@lwn.net>
> Cc: <linux-doc@vger.kernel.org>
> ---
>  Documentation/kprobes.txt | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/kprobes.txt b/Documentation/kprobes.txt
> index 10f4499e677c..ee60e519438a 100644
> --- a/Documentation/kprobes.txt
> +++ b/Documentation/kprobes.txt
> @@ -243,10 +243,10 @@ Optimization
>  ^^^^^^^^^^^^
>  
>  The Kprobe-optimizer doesn't insert the jump instruction immediately;
> -rather, it calls synchronize_sched() for safety first, because it's
> +rather, it calls synchronize_rcu() for safety first, because it's
>  possible for a CPU to be interrupted in the middle of executing the
> -optimized region [3]_.  As you know, synchronize_sched() can ensure
> -that all interruptions that were active when synchronize_sched()
> +optimized region [3]_.  As you know, synchronize_rcu() can ensure
> +that all interruptions that were active when synchronize_rcu()
>  was called are done, but only if CONFIG_PREEMPT=n.  So, this version
>  of kprobe optimization supports only kernels with CONFIG_PREEMPT=n [4]_.
>  
> -- 
> 2.17.1
> 


-- 
Masami Hiramatsu <mhiramat@kernel.org>