On Fri, 2015-12-18 at 16:08 +, Malcolm Crossley wrote:
> diff --git a/xen/include/asm-arm/percpu.h b/xen/include/asm-arm/percpu.h
> index 71e7649..c308a56 100644
> --- a/xen/include/asm-arm/percpu.h
> +++ b/xen/include/asm-arm/percpu.h
> @@ -27,6 +27,11 @@ void percpu_init_areas(void);
> #defi
On Mon, Jan 11, 2016 at 3:06 PM, Malcolm Crossley
wrote:
> On 22/12/15 11:56, George Dunlap wrote:
>> On 18/12/15 16:08, Malcolm Crossley wrote:
>>>
>>> +
>>> +#ifndef NDEBUG
>>> +#define PERCPU_RW_LOCK_UNLOCKED(owner) { RW_LOCK_UNLOCKED, 0, owner }
>>> +static inline void _percpu_rwlock_owner_ch
On 19/01/16 10:29, Malcolm Crossley wrote:
> On 11/01/16 15:06, Malcolm Crossley wrote:
>> On 22/12/15 11:56, George Dunlap wrote:
>>> On 18/12/15 16:08, Malcolm Crossley wrote:
+
+#ifndef NDEBUG
+#define PERCPU_RW_LOCK_UNLOCKED(owner) { RW_LOCK_UNLOCKED, 0, owner }
+stati
On 11/01/16 15:06, Malcolm Crossley wrote:
> On 22/12/15 11:56, George Dunlap wrote:
>> On 18/12/15 16:08, Malcolm Crossley wrote:
>>>
>>> +
>>> +#ifndef NDEBUG
>>> +#define PERCPU_RW_LOCK_UNLOCKED(owner) { RW_LOCK_UNLOCKED, 0, owner }
>>> +static inline void _percpu_rwlock_owner_check(percpu_rwlo
On 22/12/15 11:56, George Dunlap wrote:
> On 18/12/15 16:08, Malcolm Crossley wrote:
>>
>> +
>> +#ifndef NDEBUG
>> +#define PERCPU_RW_LOCK_UNLOCKED(owner) { RW_LOCK_UNLOCKED, 0, owner }
>> +static inline void _percpu_rwlock_owner_check(percpu_rwlock_t **per_cpudata,
>> +
On 18/12/15 16:08, Malcolm Crossley wrote:
> Per-cpu read-write locks allow for the fast path read case to have
> low overhead by only setting/clearing a per-cpu variable for using
> the read lock. The per-cpu read fast path also avoids locked
> compare swap operations which can be particularly slo
>>> On 18.12.15 at 17:08, wrote:
> Per-cpu read-write locks allow for the fast path read case to have
> low overhead by only setting/clearing a per-cpu variable for using
> the read lock. The per-cpu read fast path also avoids locked
> compare swap operations which can be particularly slow on cohe
Per-cpu read-write locks allow for the fast path read case to have
low overhead by only setting/clearing a per-cpu variable for using
the read lock. The per-cpu read fast path also avoids locked
compare swap operations which can be particularly slow on coherent
multi-socket systems, particularly if
