Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

Pull RCU changes from Ingo Molnar:
 "The main RCU changes in this cycle were:

   - RCU torture-test changes.

   - variable-name renaming cleanup.

   - update RCU documentation.

   - miscellaneous fixes.

   - patch to suppress RCU stall warnings while sysrq requests are being
     processed"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (68 commits)
  rcu: Provide API to suppress stall warnings while sysrc runs
  rcu: Variable name changed in tree_plugin.h and used in tree.c
  torture: Remove unused definition
  torture: Remove __init from torture_init_begin/end
  torture: Check for multiple concurrent torture tests
  locktorture: Remove reference to nonexistent Kconfig parameter
  rcutorture: Run rcu_torture_writer at normal priority
  rcutorture: Note diffs from git commits
  rcutorture: Add missing destroy_timer_on_stack()
  rcutorture: Explicitly test synchronous grace-period primitives
  rcutorture:  Add tests for get_state_synchronize_rcu()
  rcutorture: Test RCU-sched primitives in TREE_PREEMPT_RCU kernels
  torture: Use elapsed time to detect hangs
  rcutorture: Check for rcu_torture_fqs creation errors
  torture: Better summary diagnostics for build failures
  torture: Notice if an all-zero cpumask is passed inside a critical section
  rcutorture: Make rcu_torture_reader() use cond_resched()
  sched,rcu: Make cond_resched() report RCU quiescent states
  percpu: Fix raw_cpu_inc_return()
  rcutorture: Export RCU grace-period kthread wait state to rcutorture
  ...

1 files changed, 1 insertions, 3 deletions

diff --git a/kernel/softirq.c b/kernel/softirq.c
index 92f24f5e8d52..5918d227730f 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -232,7 +232,6 @@ asmlinkage __visible void __do_softirq(void)
         bool in_hardirq;
         __u32 pending;
         int softirq_bit;
-        int cpu;
 
         /*
          * Mask out PF_MEMALLOC s current task context is borrowed for the
@@ -247,7 +246,6 @@ asmlinkage __visible void __do_softirq(void)
         __local_bh_disable_ip(_RET_IP_, SOFTIRQ_OFFSET);
         in_hardirq = lockdep_softirq_start();
 
-        cpu = smp_processor_id();
 restart:
         /* Reset the pending bitmask before enabling irqs */
         set_softirq_pending(0);
@@ -276,11 +274,11 @@ restart:
                                prev_count, preempt_count());
                         preempt_count_set(prev_count);
                 }
-                rcu_bh_qs(cpu);
                 h++;
                 pending >>= softirq_bit;
         }
 
+        rcu_bh_qs(smp_processor_id());
         local_irq_disable();
 
         pending = local_softirq_pending();