On Fri, Jun 12, 2020 at 10:10:25PM +0000, Wei Yang wrote:
> 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 :-)
That would explain it! ;-)
Thanx, Paul
> >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
