On Fri, Jun 12, 2020 at 07:12:48AM -0700, Paul E. McKenney wrote:
>On Fri, Jun 12, 2020 at 10:07:55AM +0800, Wei Yang wrote:
>> Commit de30ad512a66 ("rcu: Introduce grace-period sequence numbers")
>> introduce gp_seq in rcu_state/rcu_node/rcu_data. And this field in last
>> two structure track the one in first.
>>
>> While the comment use rcu_gp_seq which is a little misleading for
>> audience. Let's use the exact name gp_seq for consistency.
>>
>> Signed-off-by: Wei Yang <[email protected]>
>
>I applied and pushed the others -- good eyes, and thank you!
>
>This one does not apply. Could you please forward-port it to
>the "dev" branch of -rcu?
>
The reason is someone has already fixed this :-)
>git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
>
> Thanx, Paul
>
>> ---
>> kernel/rcu/tree.h | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
>> index 512829eed545..3356842bc185 100644
>> --- a/kernel/rcu/tree.h
>> +++ b/kernel/rcu/tree.h
>> @@ -41,7 +41,7 @@ struct rcu_node {
>> raw_spinlock_t __private lock; /* Root rcu_node's lock protects */
>> /* some rcu_state fields as well as */
>> /* following. */
>> - unsigned long gp_seq; /* Track rsp->rcu_gp_seq. */
>> + unsigned long gp_seq; /* Track rsp->gp_seq. */
>> unsigned long gp_seq_needed; /* Track furthest future GP request. */
>> unsigned long completedqs; /* All QSes done for this node. */
>> unsigned long qsmask; /* CPUs or groups that need to switch in */
>> @@ -149,7 +149,7 @@ union rcu_noqs {
>> /* Per-CPU data for read-copy update. */
>> struct rcu_data {
>> /* 1) quiescent-state and grace-period handling : */
>> - unsigned long gp_seq; /* Track rsp->rcu_gp_seq counter. */
>> + unsigned long gp_seq; /* Track rsp->gp_seq. */
>> unsigned long gp_seq_needed; /* Track furthest future GP request. */
>> union rcu_noqs cpu_no_qs; /* No QSes yet for this CPU. */
>> bool core_needs_qs; /* Core waits for quiesc state. */
>> --
>> 2.20.1 (Apple Git-117)
>>
--
Wei Yang
Help you, Help me
