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From: Peter Zijlstra <peterz@infradead.org>
To: Kohei Tarumizu <tarumizu.kohei@fujitsu.com>
Cc: catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de,
	mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
	x86@kernel.org, hpa@zytor.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v2 0/5] Add hardware prefetch driver for A64FX and Intel processors
Date: Thu, 4 Nov 2021 18:10:12 +0100	[thread overview]
Message-ID: <20211104171012.GC174703@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <20211104052122.553868-1-tarumizu.kohei@fujitsu.com>

On Thu, Nov 04, 2021 at 02:21:17PM +0900, Kohei Tarumizu wrote:
> This patch series add hardware prefetch driver register/unregister
> function. The purpose of this driver is to provide an interface to
> control the hardware prefetch mechanism depending on the application
> characteristics.

Here you talk about applications..

> An earlier RFC[1], we were suggested that we create a hardware
> prefetch directory under /sys/devices/system/cpu/[CPUNUM]/cache.
> Hardware prefetch is a cache-related feature, but it does not require
> cache sysfs feature. Therefore, we decided to isolate the code.
> Specifically, create a directory under cpu/[CPUNUM].

Here you talk about CPUs..

How does that work?

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WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Kohei Tarumizu <tarumizu.kohei@fujitsu.com>
Cc: catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de,
	mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
	x86@kernel.org, hpa@zytor.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v2 0/5] Add hardware prefetch driver for A64FX and Intel processors
Date: Thu, 4 Nov 2021 18:10:12 +0100	[thread overview]
Message-ID: <20211104171012.GC174703@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <20211104052122.553868-1-tarumizu.kohei@fujitsu.com>

On Thu, Nov 04, 2021 at 02:21:17PM +0900, Kohei Tarumizu wrote:
> This patch series add hardware prefetch driver register/unregister
> function. The purpose of this driver is to provide an interface to
> control the hardware prefetch mechanism depending on the application
> characteristics.

Here you talk about applications..

> An earlier RFC[1], we were suggested that we create a hardware
> prefetch directory under /sys/devices/system/cpu/[CPUNUM]/cache.
> Hardware prefetch is a cache-related feature, but it does not require
> cache sysfs feature. Therefore, we decided to isolate the code.
> Specifically, create a directory under cpu/[CPUNUM].

Here you talk about CPUs..

How does that work?

  parent reply	other threads:[~2021-11-04 17:14 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-04  5:21 [RFC PATCH v2 0/5] Add hardware prefetch driver for A64FX and Intel processors Kohei Tarumizu
2021-11-04  5:21 ` Kohei Tarumizu
2021-11-04  5:21 ` [RFC PATCH v2 1/5] driver: hwpf: Add hardware prefetch core driver register/unregister functions Kohei Tarumizu
2021-11-04  5:21   ` Kohei Tarumizu
2021-11-04  5:21 ` [RFC PATCH v2 2/5] driver: hwpf: Add support for A64FX to hardware prefetch driver Kohei Tarumizu
2021-11-04  5:21   ` Kohei Tarumizu
2021-11-04  5:21 ` [RFC PATCH v2 3/5] driver: hwpf: Add support for Intel " Kohei Tarumizu
2021-11-04  5:21   ` Kohei Tarumizu
2021-11-08  1:51   ` Dave Hansen
2021-11-08  1:51     ` Dave Hansen
2021-11-09  9:44     ` tarumizu.kohei
2021-11-09  9:44       ` tarumizu.kohei
2021-11-04  5:21 ` [RFC PATCH v2 4/5] driver: hwpf: Add Kconfig/Makefile to build " Kohei Tarumizu
2021-11-04  5:21   ` Kohei Tarumizu
2021-11-04  5:21 ` [RFC PATCH v2 5/5] docs: ABI: Add sysfs documentation interface of " Kohei Tarumizu
2021-11-04  5:21   ` Kohei Tarumizu
2021-11-04 14:55   ` Dave Hansen
2021-11-04 14:55     ` Dave Hansen
2021-11-08  1:29     ` tarumizu.kohei
2021-11-08  1:29       ` tarumizu.kohei
2021-11-08  1:49       ` Dave Hansen
2021-11-08  1:49         ` Dave Hansen
2021-11-09  9:41         ` tarumizu.kohei
2021-11-09  9:41           ` tarumizu.kohei
2021-11-09 17:44           ` Dave Hansen
2021-11-09 17:44             ` Dave Hansen
2021-11-10  9:25             ` tarumizu.kohei
2021-11-10  9:25               ` tarumizu.kohei
2021-11-04 15:13 ` [RFC PATCH v2 0/5] Add hardware prefetch driver for A64FX and Intel processors Borislav Petkov
2021-11-04 15:13   ` Borislav Petkov
2021-11-08  2:17   ` tarumizu.kohei
2021-11-08  2:17     ` tarumizu.kohei
2021-11-10  8:34     ` Borislav Petkov
2021-11-10  8:34       ` Borislav Petkov
2021-11-18  6:14       ` tarumizu.kohei
2021-11-18  6:14         ` tarumizu.kohei
2021-11-18  7:09         ` tarumizu.kohei
2021-11-18  7:09           ` tarumizu.kohei
2021-12-06  9:30           ` tarumizu.kohei
2021-12-06  9:30             ` tarumizu.kohei
2021-11-04 17:10 ` Peter Zijlstra [this message]
2021-11-04 17:10   ` Peter Zijlstra
2021-11-08  2:36   ` tarumizu.kohei
2021-11-08  2:36     ` tarumizu.kohei

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