diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-04-16 07:49:22 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-06-10 13:45:53 -0700 |
| commit | 14961444696effb2e660fe876e5c1880f8bc3932 (patch) | |
| tree | ab62688a54cd44215b2658dc89f644755215fa16 /kernel/rcutiny.c | |
| parent | 2439b696cb5303f1eeb6aeebcee19e0056c3dd6e (diff) | |
| download | linux-0-day-14961444696effb2e660fe876e5c1880f8bc3932.tar.gz linux-0-day-14961444696effb2e660fe876e5c1880f8bc3932.tar.xz | |
rcu: Shrink TINY_RCU by reworking CPU-stall ifdefs
TINY_RCU's reset_cpu_stall_ticks() and check_cpu_stalls() functions
are defined unconditionally, and are empty functions if CONFIG_RCU_TRACE
is disabled (which in turns disables detection of RCU CPU stalls).
This commit saves a few lines of source code by defining these functions
only if CONFIG_RCU_TRACE=y.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcutiny.c')
| -rw-r--r-- | kernel/rcutiny.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c index 4adc9e26da34a..aa344111de3ef 100644 --- a/kernel/rcutiny.c +++ b/kernel/rcutiny.c @@ -204,7 +204,7 @@ static int rcu_is_cpu_rrupt_from_idle(void) */ static int rcu_qsctr_help(struct rcu_ctrlblk *rcp) { - reset_cpu_stall_ticks(rcp); + RCU_TRACE(reset_cpu_stall_ticks(rcp)); if (rcp->rcucblist != NULL && rcp->donetail != rcp->curtail) { rcp->donetail = rcp->curtail; @@ -251,7 +251,7 @@ void rcu_bh_qs(int cpu) */ void rcu_check_callbacks(int cpu, int user) { - check_cpu_stalls(); + RCU_TRACE(check_cpu_stalls()); if (user || rcu_is_cpu_rrupt_from_idle()) rcu_sched_qs(cpu); else if (!in_softirq()) |