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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-03-10 18:55:52 +0100
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-04-29 17:43:32 +0200
commit365187fbc04fd55766bf6a94e37e558505bf480a (patch)
tree6249491e31d2c9e6e1fdb62048694b28f0974d97 /kernel/rcu/tree.h
parentrcu: Print negatives for stall-warning counter wraparound (diff)
downloadlinux-365187fbc04fd55766bf6a94e37e558505bf480a.tar.xz
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rcu: Update cpu_needs_another_gp() for futures from non-NOCB CPUs
In the old days, the only source of requests for future grace periods was NOCB CPUs. This has changed: CPUs routinely post requests for future grace periods in order to promote power efficiency and reduce OS jitter with minimal impact on grace-period latency. This commit therefore updates cpu_needs_another_gp() to invoke rcu_future_needs_gp() instead of rcu_nocb_needs_gp(). The latter is no longer used, so is now removed. This commit also adds tracing for the irq_work_queue() wakeup case. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcu/tree.h')
-rw-r--r--kernel/rcu/tree.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 75dc3c39a02a..7b572c5c65e1 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -547,7 +547,6 @@ static void print_cpu_stall_info(struct rcu_state *rsp, int cpu);
static void print_cpu_stall_info_end(void);
static void zero_cpu_stall_ticks(struct rcu_data *rdp);
static void increment_cpu_stall_ticks(void);
-static int rcu_nocb_needs_gp(struct rcu_state *rsp);
static void rcu_nocb_gp_set(struct rcu_node *rnp, int nrq);
static void rcu_nocb_gp_cleanup(struct rcu_state *rsp, struct rcu_node *rnp);
static void rcu_init_one_nocb(struct rcu_node *rnp);