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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-06 08:02:40 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-06 08:02:40 -0800
commit423d091dfe58d3109d84c408810a7cfa82f6f184 (patch)
tree43c4385d1dc7219582f924d42db1f3e203a577bd /arch/sparc
parent1483b3823542c9721eddf09a077af1e02ac96b50 (diff)
parent919b83452b2e7c1dbced0456015508b4b9585db3 (diff)
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits) cpu: Export cpu_up() rcu: Apply ACCESS_ONCE() to rcu_boost() return value Revert "rcu: Permit rt_mutex_unlock() with irqs disabled" docs: Additional LWN links to RCU API rcu: Augment rcu_batch_end tracing for idle and callback state rcu: Add rcutorture tests for srcu_read_lock_raw() rcu: Make rcutorture test for hotpluggability before offlining CPUs driver-core/cpu: Expose hotpluggability to the rest of the kernel rcu: Remove redundant rcu_cpu_stall_suppress declaration rcu: Adaptive dyntick-idle preparation rcu: Keep invoking callbacks if CPU otherwise idle rcu: Irq nesting is always 0 on rcu_enter_idle_common rcu: Don't check irq nesting from rcu idle entry/exit rcu: Permit dyntick-idle with callbacks pending rcu: Document same-context read-side constraints rcu: Identify dyntick-idle CPUs on first force_quiescent_state() pass rcu: Remove dynticks false positives and RCU failures rcu: Reduce latency of rcu_prepare_for_idle() rcu: Eliminate RCU_FAST_NO_HZ grace-period hang rcu: Avoid needlessly IPIing CPUs at GP end ...
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/kernel/process_64.c6
-rw-r--r--arch/sparc/kernel/setup_32.c2
2 files changed, 5 insertions, 3 deletions
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index 3739a06a76cb..39d8b05201a2 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -95,12 +95,14 @@ void cpu_idle(void)
set_thread_flag(TIF_POLLING_NRFLAG);
while(1) {
- tick_nohz_stop_sched_tick(1);
+ tick_nohz_idle_enter();
+ rcu_idle_enter();
while (!need_resched() && !cpu_is_offline(cpu))
sparc64_yield(cpu);
- tick_nohz_restart_sched_tick();
+ rcu_idle_exit();
+ tick_nohz_idle_exit();
preempt_enable_no_resched();
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index fe1e3fc31bc5..ffb883ddd0f0 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -84,7 +84,7 @@ static void prom_sync_me(void)
prom_printf("PROM SYNC COMMAND...\n");
show_free_areas(0);
- if(current->pid != 0) {
+ if (!is_idle_task(current)) {
local_irq_enable();
sys_sync();
local_irq_disable();