From: Suzuki.Poulose@arm.com (Suzuki K. Poulose)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 05/11] arm-cci PMU: Delay counter writes to pmu_enable
Date: Mon, 11 Jan 2016 18:12:34 +0000 [thread overview]
Message-ID: <5693F092.3080209@arm.com> (raw)
In-Reply-To: <20160111112443.GI6499@leverpostej>
On 11/01/16 11:24, Mark Rutland wrote:
> On Mon, Jan 11, 2016 at 11:08:27AM +0000, Suzuki K. Poulose wrote:
>> On 11/01/16 10:46, Mark Rutland wrote:
>>> On Tue, Jan 05, 2016 at 09:59:13AM +0000, Suzuki K. Poulose wrote:
>>>> On 04/01/16 19:24, Mark Rutland wrote:
>> Hence, didn't want to change it for CCI. We could use the batching
>> logic, if decide to do so. I can go ahead with that if there are no
>> other side effects with that.
>
> We'll lose events regardless as our RMW sequence will race against the
> counters. Batching will make that window slightly larger, but other than
> that I don't see a problem.
OK, will do that.
Cheers
Suzuki
WARNING: multiple messages have this Message-ID (diff)
From: "Suzuki K. Poulose" <Suzuki.Poulose@arm.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, arm@kernel.org,
punit.agrawal@arm.com, peterz@infradead.org
Subject: Re: [PATCH v5 05/11] arm-cci PMU: Delay counter writes to pmu_enable
Date: Mon, 11 Jan 2016 18:12:34 +0000 [thread overview]
Message-ID: <5693F092.3080209@arm.com> (raw)
In-Reply-To: <20160111112443.GI6499@leverpostej>
On 11/01/16 11:24, Mark Rutland wrote:
> On Mon, Jan 11, 2016 at 11:08:27AM +0000, Suzuki K. Poulose wrote:
>> On 11/01/16 10:46, Mark Rutland wrote:
>>> On Tue, Jan 05, 2016 at 09:59:13AM +0000, Suzuki K. Poulose wrote:
>>>> On 04/01/16 19:24, Mark Rutland wrote:
>> Hence, didn't want to change it for CCI. We could use the batching
>> logic, if decide to do so. I can go ahead with that if there are no
>> other side effects with that.
>
> We'll lose events regardless as our RMW sequence will race against the
> counters. Batching will make that window slightly larger, but other than
> that I don't see a problem.
OK, will do that.
Cheers
Suzuki
next prev parent reply other threads:[~2016-01-11 18:12 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-04 11:54 [PATCH v5 00/11] arm-cci: PMU updates Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 01/11] arm-cci: Define CCI counter period Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 18:27 ` Mark Rutland
2016-01-04 18:27 ` Mark Rutland
2016-01-05 9:50 ` Suzuki K. Poulose
2016-01-05 9:50 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 02/11] arm-cci: Refactor pmu_write_counter Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 19:01 ` Mark Rutland
2016-01-04 19:01 ` Mark Rutland
2016-01-04 11:54 ` [PATCH v5 03/11] arm-cci: Group writes to counter Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 19:03 ` Mark Rutland
2016-01-04 19:03 ` Mark Rutland
2016-01-05 10:51 ` Suzuki K. Poulose
2016-01-05 10:51 ` Suzuki K. Poulose
2016-01-11 10:44 ` Mark Rutland
2016-01-11 10:44 ` Mark Rutland
2016-01-11 10:48 ` Suzuki K. Poulose
2016-01-11 10:48 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 04/11] arm-cci: Refactor CCI PMU enable/disable methods Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 05/11] arm-cci PMU: Delay counter writes to pmu_enable Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 19:24 ` Mark Rutland
2016-01-04 19:24 ` Mark Rutland
2016-01-05 9:59 ` Suzuki K. Poulose
2016-01-05 9:59 ` Suzuki K. Poulose
2016-01-11 10:46 ` Mark Rutland
2016-01-11 10:46 ` Mark Rutland
2016-01-11 11:08 ` Suzuki K. Poulose
2016-01-11 11:08 ` Suzuki K. Poulose
2016-01-11 11:24 ` Mark Rutland
2016-01-11 11:24 ` Mark Rutland
2016-01-11 18:12 ` Suzuki K. Poulose [this message]
2016-01-11 18:12 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 06/11] arm-cci: Get the status of a counter Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 07/11] arm-cci: Add routines to save/restore all counters Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-11 10:50 ` Mark Rutland
2016-01-11 10:50 ` Mark Rutland
2016-01-11 10:58 ` Suzuki K. Poulose
2016-01-11 10:58 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 08/11] arm-cci: Provide hook for writing to PMU counters Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-11 10:54 ` Mark Rutland
2016-01-11 10:54 ` Mark Rutland
2016-01-11 12:14 ` Suzuki K. Poulose
2016-01-11 12:14 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 09/11] arm-cci: CCI-500: Work around PMU counter writes Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 10/11] arm-cci500: Rearrange PMU driver for code sharing with CCI-550 PMU Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
2016-01-04 11:54 ` [PATCH v5 11/11] arm-cci: CoreLink CCI-550 PMU driver Suzuki K. Poulose
2016-01-04 11:54 ` Suzuki K. Poulose
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