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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-07-02 21:27:31 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-07-17 23:59:05 +0200 |
| commit | 32bb1c79996069ef9e4e53b428050749f9841c3f (patch) | |
| tree | 6e3d28b5807d8f77f215d27b0a59f25809bc975a /kernel/rcu | |
| parent | rcu: Pull out wait_event*() condition into helper function (diff) | |
| download | linux-32bb1c79996069ef9e4e53b428050749f9841c3f.tar.xz linux-32bb1c79996069ef9e4e53b428050749f9841c3f.zip | |
rcu: Rename RCU_GP_DONE_FQS to RCU_GP_DOING_FQS
The grace-period kthread sleeps waiting to do a force-quiescent-state
scan, and when awakened sets rsp->gp_state to RCU_GP_DONE_FQS.
However, this is confusing because the kthread has not done the
force-quiescent-state, but is instead just starting to do it. This commit
therefore renames RCU_GP_DONE_FQS to RCU_GP_DOING_FQS in order to make
things a bit easier on reviewers.
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.c | 2 | ||||
| -rw-r--r-- | kernel/rcu/tree.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index b2803730ac13..f66f6e7730bc 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2088,7 +2088,7 @@ static int __noreturn rcu_gp_kthread(void *arg) rsp->gp_state = RCU_GP_WAIT_FQS; ret = wait_event_interruptible_timeout(rsp->gp_wq, rcu_gp_fqs_check_wake(rsp, &gf), j); - rsp->gp_state = RCU_GP_DONE_FQS; + rsp->gp_state = RCU_GP_DOING_FQS; /* Locking provides needed memory barriers. */ /* If grace period done, leave loop. */ if (!READ_ONCE(rnp->qsmask) && diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index b3ae8d3cffbc..543ba726396c 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -535,7 +535,7 @@ struct rcu_state { #define RCU_GP_WAIT_GPS 1 /* Wait for grace-period start. */ #define RCU_GP_DONE_GPS 2 /* Wait done for grace-period start. */ #define RCU_GP_WAIT_FQS 3 /* Wait for force-quiescent-state time. */ -#define RCU_GP_DONE_FQS 4 /* Wait done for force-quiescent-state time. */ +#define RCU_GP_DOING_FQS 4 /* Wait done for force-quiescent-state time. */ #define RCU_GP_CLEANUP 5 /* Grace-period cleanup started. */ #define RCU_GP_CLEANED 6 /* Grace-period cleanup complete. */ |