linux-kernel - Re: [PATCH v1] percpu: use raw_local_irq_* in _this

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Message-ID: <CACVXFVN7ye6QkJLWSTecy24FeHY6SRB6cDLAXyrPF7kBKgvq5g@mail.gmail.com>
Date:	Wed, 15 Feb 2012 13:08:22 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Christoph Lameter <cl@...ux.com>, Tejun Heo <tj@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] percpu: use raw_local_irq_* in _this_cpu op

On Wed, Feb 15, 2012 at 12:59 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:
> Le mercredi 15 février 2012 à 12:36 +0800, Ming Lei a écrit :
>> It doesn't make sense to trace irq off or do irq flags
>> lock proving inside 'this_cpu' operations, so replace local_irq_*
>> with raw_local_irq_* in 'this_cpu' op.
> ...
>> Acked-by: Christoph Lameter <cl@...ux.com>
>> Signed-off-by: Ming Lei <tom.leiming@...il.com>
>> ---
>>  include/linux/percpu.h |   20 ++++++++++----------
>>  1 files changed, 10 insertions(+), 10 deletions(-)
>>
>> diff --git a/include/linux/percpu.h b/include/linux/percpu.h
>> index 6e68d05..5ed1e38 100644
>> --- a/include/linux/percpu.h
>> +++ b/include/linux/percpu.h
>> @@ -294,9 +294,9 @@ do {                                                                      \
>>  #define _this_cpu_generic_to_op(pcp, val, op)                                \
>>  do {                                                                 \
>>       unsigned long flags;                                            \
>> -     local_irq_save(flags);                                          \
>> +     raw_local_irq_save(flags);                                              \
>>       *__this_cpu_ptr(&(pcp)) op val;                                 \
>> -     local_irq_restore(flags);                                       \
>> +     raw_local_irq_restore(flags);                                   \
>>  } while (0)
>>
>
> Could you check the alignement of trailing '\' ?

Just several warnings, no errors. Also the 5 warnings are introduced
by previous commit, sounds nothing to do with motivation of this patch.
You may prepare a standalone patch to fix all the code style in this file, :-)

./script/checkpatch.pl
          WARNING: line over 80 characters
          ......
          total: 0 errors, 5 warnings, 60 lines checked


thanks,
-- 
Ming Lei
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