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| author | Ingo Molnar <mingo@kernel.org> | 2014-05-22 11:36:10 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-05-22 11:36:10 +0200 |
| commit | e14505a8d50882ff3bdd4b791b14d90a0881fa4d (patch) | |
| tree | d2c3e9846b82b02187d33ebafb44fd6934bcd81f /kernel/softirq.c | |
| parent | Linux 3.15-rc6 (diff) | |
| parent | rcu: Provide API to suppress stall warnings while sysrc runs (diff) | |
| download | linux-e14505a8d50882ff3bdd4b791b14d90a0881fa4d.tar.xz linux-e14505a8d50882ff3bdd4b791b14d90a0881fa4d.zip | |
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:
" 1. Update RCU documentation. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/634.
2. Miscellaneous fixes. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/645.
3. Torture-test changes. These were posted to LKML at
https://lkml.org/lkml/2014/4/28/667.
4. Variable-name renaming cleanup, sent separately due to conflicts.
This was posted to LKML at https://lkml.org/lkml/2014/5/13/854.
5. Patch to suppress RCU stall warnings while sysrq requests are
being processed. This patch is the RCU portions of the patch
that Rik posted to LKML at https://lkml.org/lkml/2014/4/29/457.
The reason for pushing this patch ahead instead of waiting until
3.17 is that the NMI-based stack traces are messing up sysrq
output, and in some cases also messing up the system as well."
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/softirq.c')
| -rw-r--r-- | kernel/softirq.c | 4 |
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(); |