From: Alex Shi <alex.shi@intel.com>
To: Alex Shi <alex.shi@intel.com>
Cc: mingo@redhat.com, peterz@infradead.org, tglx@linutronix.de,
akpm@linux-foundation.org, bp@alien8.de, pjt@google.com,
namhyung@kernel.org, efault@gmx.de, morten.rasmussen@arm.com,
vincent.guittot@linaro.org, preeti@linux.vnet.ibm.com,
viresh.kumar@linaro.org, linux-kernel@vger.kernel.org,
mgorman@suse.de, riel@redhat.com, wangyun@linux.vnet.ibm.com,
Jason Low <jason.low2@hp.com>
Subject: Re: [RFC patch 0/4] change 64 bit variables to long type
Date: Fri, 14 Jun 2013 22:20:37 +0800 [thread overview]
Message-ID: <51BB26B5.5000102@intel.com> (raw)
In-Reply-To: <1370590169-24804-1-git-send-email-alex.shi@intel.com>
On 06/07/2013 03:29 PM, Alex Shi wrote:
> There are some 64 bits variables in cfs_rq/tg etc. That ask expersive
> operations in 32 bit machine. But in fact, long type is enough for them.
>
> So do this change lead more efficient code and without data lose.
>
some variable like cfs_rq->runnable_load_avg, there is no much changes
in patch 1/4, since in most of place it was treated as a 'unsigned
long', not u64.
Anyway, Paul, I know you are watching the mailing list. :)
Could you like to give some comments on this patchset?
> Regards
> Alex
>
--
Thanks
Alex
next prev parent reply other threads:[~2013-06-14 14:20 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-07 7:29 [RFC patch 0/4] change 64 bit variables to long type Alex Shi
2013-06-07 7:29 ` [RFC patch 1/4] sched: change cfs_rq load avg to unsigned long Alex Shi
2013-06-07 9:07 ` Vincent Guittot
2013-06-08 2:18 ` Alex Shi
2013-06-17 9:49 ` Paul Turner
2013-06-17 9:59 ` Alex Shi
2013-06-17 9:54 ` Vincent Guittot
2013-06-17 9:58 ` Alex Shi
2013-06-18 4:56 ` Alex Shi
2013-06-07 7:29 ` [RFC patch 2/4] sched/tg: use 'unsigned long' for load variable in task group Alex Shi
2013-06-17 12:25 ` Paul Turner
2013-06-17 15:26 ` Alex Shi
2013-06-07 7:29 ` [RFC patch 3/4] sched/cfs_rq: change atomic64_t removed_load to atomic_long_t Alex Shi
2013-06-17 10:19 ` Paul Turner
2013-06-07 7:29 ` [RFC patch 4/4] sched/tg: remove tg.load_weight Alex Shi
2013-06-17 12:22 ` Paul Turner
2013-06-10 2:20 ` [RFC patch 0/4] change 64 bit variables to long type Alex Shi
2013-06-11 6:13 ` Alex Shi
2013-06-14 14:20 ` Alex Shi [this message]
2013-06-17 1:01 ` Alex Shi
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