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From: Weng Meiling <wengmeiling.weng@huawei.com>
To: Will Deacon <will.deacon@arm.com>
Cc: Robert Richter <rric@kernel.org>,
	"oprofile-list@lists.sf.net" <oprofile-list@lists.sf.net>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Li Zefan <lizefan@huawei.com>,
	"wangnan0@huawei.com" <wangnan0@huawei.com>,
	"zhangwei(Jovi)" <jovi.zhangwei@huawei.com>,
	Huang Qiang <h.huangqiang@huawei.com>,
	"sdu.liu@huawei.com" <sdu.liu@huawei.com>
Subject: Re: [PATCH] oprofile: check whether oprofile perf enabled in op_overflow_handler()
Date: Tue, 11 Feb 2014 12:33:51 +0800	[thread overview]
Message-ID: <52F9A82F.3060806@huawei.com> (raw)
In-Reply-To: <52D8A56F.1010507@huawei.com>

Hi Will,

> 
>>> how userland can be notified about throttling. Throttling could be
>>> worth for operf too, not only for the oprofile kernel driver.
>>>
> 
>>> From a quick look it seems there is also code in x86 that dynamically
>>> adjusts the rate which might be worth being implemented for ARM too.
>>
>> Are you referring to the perf_sample_event_took callback? If so, that
>> certainly looks worth persuing. I'll stick it on my list, thanks!
>>

Is there any progress on this work? Because this is important for me.
Sorry for trouble you.

Thanks!
Weng Meiling



  reply	other threads:[~2014-02-11  4:36 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-20  7:49 [PATCH] oprofile: check whether oprofile perf enabled in op_overflow_handler() Weng Meiling
2013-12-30  9:06 ` Weng Meiling
2014-01-13  8:45 ` Robert Richter
2014-01-14  1:52   ` Weng Meiling
2014-01-14 15:05     ` Robert Richter
2014-01-15  2:02       ` Weng Meiling
2014-01-15 10:24         ` Robert Richter
2014-01-16  1:09           ` Weng Meiling
2014-01-16  9:33             ` Weng Meiling
2014-01-16 11:52               ` Robert Richter
2014-01-16 19:36                 ` Will Deacon
2014-01-17  3:37                   ` Weng Meiling
2014-02-11  4:33                     ` Weng Meiling [this message]
2014-02-11 15:52                       ` Will Deacon
2014-02-11 18:05                         ` Will Deacon
2014-02-15  2:41                         ` Weng Meiling
2014-02-17 10:08                           ` Will Deacon
2014-02-17 11:39                             ` Weng Meiling

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