Re: RE: [PATCH] Make lock profiling usable again

[Juergen Gross <juergen.gross@ts.fujitsu.com>]

Xudong,

I found that bug after sending you the patch and included the correction
already in the version sent to xen-devel.


Juergen

On 11/05/2011 05:10 AM, Hao, Xudong wrote:
> Initialize profile to NULL when lock profiling is not enabled.
>
> diff -r 068d3d55ce6e xen/include/xen/spinlock.h
> --- a/xen/include/xen/spinlock.h        Tue Nov 01 19:03:38 2011 +0000
> +++ b/xen/include/xen/spinlock.h        Sat Nov 05 11:57:38 2011 +0800
> @@ -108,7 +108,7 @@ struct lock_profile_qhead { };
>   struct lock_profile_qhead { };
>
>   #define SPIN_LOCK_UNLOCKED                                                    \
> -    { _RAW_SPIN_LOCK_UNLOCKED, 0xfffu, 0, _LOCK_DEBUG, { } }
> +    { _RAW_SPIN_LOCK_UNLOCKED, 0xfffu, 0, _LOCK_DEBUG, NULL }
>   #define DEFINE_SPINLOCK(l) spinlock_t l = SPIN_LOCK_UNLOCKED
>
>   #define spin_lock_init_prof(s, l) spin_lock_init(&((s)->l))
>
>
> Thanks,
> -Xudong
>
>
>> -----Original Message-----
>> From: Juergen Gross [mailto:juergen.gross@ts.fujitsu.com]
>> Sent: Friday, November 04, 2011 8:53 PM
>> To: xen-devel@lists.xensource.com
>> Cc: Hao, Xudong
>> Subject: [PATCH] Make lock profiling usable again
>>
>> Using lock profiling (option lock_profile in xen/Rules.mk) resulted in build errors.
>> Changes:
>> - Include public/sysctl.h in spinlock.h when using lock profiling.
>> - Allocate profile data in an own structure to avoid struct domain becoming
>>    larger then one page
>>
>> Signed-off-by: juergen.gross@ts.fujitsu.com
>>
>>
>> 2 files changed, 44 insertions(+), 24 deletions(-)
>> xen/common/spinlock.c      |   34 +++++++++++++++++++++-------------
>> xen/include/xen/spinlock.h |   34 +++++++++++++++++++++++-----------
>>
>
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>
>


-- 
Juergen Gross                 Principal Developer Operating Systems
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