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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-07-03 17:22:34 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-08-30 16:02:59 -0700 |
| commit | 532c00c97f16a2a8576d453ae13ddc38162faed4 (patch) | |
| tree | bb0ef9c4b2269aa33fcfbe252dc335ef91e7c1f9 /kernel/rcu/tree.c | |
| parent | 3481f2eab09563456bbc7cb358ad5d151a509064 (diff) | |
| download | lwn-532c00c97f16a2a8576d453ae13ddc38162faed4.tar.gz lwn-532c00c97f16a2a8576d453ae13ddc38162faed4.zip | |
rcu: Remove rsp parameter from rcu_gp_kthread_wake()
There now is only one rcu_state structure in a given build of the
Linux kernel, so there is no need to pass it as a parameter to RCU's
functions. This commit therefore removes the rsp parameter from
rcu_gp_kthread_wake().
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 87fc0727a9b8..06f83fce416b 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -1642,13 +1642,13 @@ static bool rcu_future_gp_cleanup(struct rcu_node *rnp) * raced to awaken, and we lost), and finally don't try to awaken * a kthread that has not yet been created. */ -static void rcu_gp_kthread_wake(struct rcu_state *rsp) +static void rcu_gp_kthread_wake(void) { - if (current == rsp->gp_kthread || - !READ_ONCE(rsp->gp_flags) || - !rsp->gp_kthread) + if (current == rcu_state.gp_kthread || + !READ_ONCE(rcu_state.gp_flags) || + !rcu_state.gp_kthread) return; - swake_up_one(&rsp->gp_wq); + swake_up_one(&rcu_state.gp_wq); } /* @@ -1722,7 +1722,7 @@ static void rcu_accelerate_cbs_unlocked(struct rcu_state *rsp, needwake = rcu_accelerate_cbs(rsp, rnp, rdp); raw_spin_unlock_rcu_node(rnp); /* irqs remain disabled. */ if (needwake) - rcu_gp_kthread_wake(rsp); + rcu_gp_kthread_wake(); } /* @@ -1820,7 +1820,7 @@ static void note_gp_changes(struct rcu_state *rsp, struct rcu_data *rdp) needwake = __note_gp_changes(rsp, rnp, rdp); raw_spin_unlock_irqrestore_rcu_node(rnp, flags); if (needwake) - rcu_gp_kthread_wake(rsp); + rcu_gp_kthread_wake(); } static void rcu_gp_slow(struct rcu_state *rsp, int delay) @@ -2203,7 +2203,7 @@ static void rcu_report_qs_rsp(unsigned long flags) WARN_ON_ONCE(!rcu_gp_in_progress()); WRITE_ONCE(rsp->gp_flags, READ_ONCE(rsp->gp_flags) | RCU_GP_FLAG_FQS); raw_spin_unlock_irqrestore_rcu_node(rcu_get_root(), flags); - rcu_gp_kthread_wake(rsp); + rcu_gp_kthread_wake(); } /* @@ -2364,7 +2364,7 @@ rcu_report_qs_rdp(int cpu, struct rcu_data *rdp) rcu_report_qs_rnp(mask, rnp, rnp->gp_seq, flags); /* ^^^ Released rnp->lock */ if (needwake) - rcu_gp_kthread_wake(rsp); + rcu_gp_kthread_wake(); } } @@ -2670,7 +2670,7 @@ static void force_quiescent_state(struct rcu_state *rsp) } WRITE_ONCE(rsp->gp_flags, READ_ONCE(rsp->gp_flags) | RCU_GP_FLAG_FQS); raw_spin_unlock_irqrestore_rcu_node(rnp_old, flags); - rcu_gp_kthread_wake(rsp); + rcu_gp_kthread_wake(); } /* @@ -3672,7 +3672,7 @@ static void rcu_migrate_callbacks(int cpu, struct rcu_state *rsp) !rcu_segcblist_n_cbs(&my_rdp->cblist)); raw_spin_unlock_irqrestore_rcu_node(rnp_root, flags); if (needwake) - rcu_gp_kthread_wake(rsp); + rcu_gp_kthread_wake(); WARN_ONCE(rcu_segcblist_n_cbs(&rdp->cblist) != 0 || !rcu_segcblist_empty(&rdp->cblist), "rcu_cleanup_dead_cpu: Callbacks on offline CPU %d: qlen=%lu, 1stCB=%p\n", |