diff options
| author | Cliff Wickman <cpw@sgi.com> | 2012-01-18 09:40:47 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-03 09:21:35 -0800 |
| commit | c7e4489fb8616f81319673912fc2682b89636b9b (patch) | |
| tree | f99a69c66b0c7659168d4672a8e012248ff5698f | |
| parent | 2c6b180537f35fc90b94416b09aca07ced98391c (diff) | |
x86/uv: Fix uninitialized spinlocks
commit d2ebc71d472020bc30e29afe8c4d2a85a5b41f56 upstream.
Initialize two spinlocks in tlb_uv.c and also properly define/initialize
the uv_irq_lock.
The lack of explicit initialization seems to be functionally
harmless, but it is diagnosed when these are turned on:
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_LOCKDEP=y
Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/E1RnXd1-0003wU-PM@eag09.americas.sgi.com
[ Added the uv_irq_lock initialization fix by Dimitri Sivanich ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/platform/uv/tlb_uv.c | 2 | ||||
| -rw-r--r-- | arch/x86/platform/uv/uv_irq.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index 9010ca715c0..81aee5abd42 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -1860,6 +1860,8 @@ static void __init init_per_cpu_tunables(void) bcp->cong_reps = congested_reps; bcp->cong_period = congested_period; bcp->clocks_per_100_usec = usec_2_cycles(100); + spin_lock_init(&bcp->queue_lock); + spin_lock_init(&bcp->uvhub_lock); } } diff --git a/arch/x86/platform/uv/uv_irq.c b/arch/x86/platform/uv/uv_irq.c index 374a05d8ad2..f25c2765a5c 100644 --- a/arch/x86/platform/uv/uv_irq.c +++ b/arch/x86/platform/uv/uv_irq.c @@ -25,7 +25,7 @@ struct uv_irq_2_mmr_pnode{ int irq; }; -static spinlock_t uv_irq_lock; +static DEFINE_SPINLOCK(uv_irq_lock); static struct rb_root uv_irq_root; static int uv_set_irq_affinity(struct irq_data *, const struct cpumask *, bool); |