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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-03-19 12:38:24 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-06-10 13:39:44 -0700 |
| commit | 05eb552bf5ed9e7277bdc9c273ed2f4e9b7dc3e5 (patch) | |
| tree | 9355073909b25cf7ec13f8157326b9f321711d92 /kernel/rcutree.c | |
| parent | ce3d9c03d1fa079678cc8df1517011e215517cda (diff) | |
| download | linux-05eb552bf5ed9e7277bdc9c273ed2f4e9b7dc3e5.tar.bz2 | |
rcu: Move redundant call to note_gp_changes() into called function
The __rcu_process_callbacks() invokes note_gp_changes() immediately
before invoking rcu_check_quiescent_state(), which conditionally
invokes that same function. This commit therefore eliminates the
call to note_gp_changes() in __rcu_process_callbacks() in favor of
making unconditional to call from rcu_check_quiescent_state() to
note_gp_changes().
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutree.c')
| -rw-r--r-- | kernel/rcutree.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 391bd724cd77..7a5194ef90da 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1716,11 +1716,8 @@ rcu_report_qs_rdp(int cpu, struct rcu_state *rsp, struct rcu_data *rdp) static void rcu_check_quiescent_state(struct rcu_state *rsp, struct rcu_data *rdp) { - /* If there is now a new grace period, record and return. */ - if (rdp->gpnum != rsp->gpnum) { - note_gp_changes(rsp, rdp); - return; - } + /* Check for grace-period ends and beginnings. */ + note_gp_changes(rsp, rdp); /* * Does this CPU still need to do its part for current grace period? @@ -2184,9 +2181,6 @@ __rcu_process_callbacks(struct rcu_state *rsp) WARN_ON_ONCE(rdp->beenonline == 0); - /* Handle the end of a grace period that some other CPU ended. */ - note_gp_changes(rsp, rdp); - /* Update RCU state based on any recent quiescent states. */ rcu_check_quiescent_state(rsp, rdp); |