From: peterz@infradead.org (Peter Zijlstra)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 09/10] drivers/perf: Add support for ARMv8.2 Statistical Profiling Extension
Date: Wed, 4 Jan 2017 11:37:13 +0100 [thread overview]
Message-ID: <20170104103713.GH25813@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <1483467027-14547-10-git-send-email-will.deacon@arm.com>
On Tue, Jan 03, 2017 at 06:10:26PM +0000, Will Deacon wrote:
> The ARMv8.2 architecture introduces the Statistical Profiling Extension
> (SPE). SPE provides a way to configure and collect profiling samples
> from the CPU in the form of a trace buffer, which can be mapped directly
> into userspace using the perf AUX buffer infrastructure.
>
> This patch adds support for SPE in the form of a new perf driver.
>
Can you give a little high level overview of what exactly SPE is?
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, marc.zyngier@arm.com,
mark.rutland@arm.com, kim.phillips@arm.com,
alex.bennee@linaro.org, christoffer.dall@linaro.org,
tglx@linutronix.de, alexander.shishkin@linux.intel.com,
robh@kernel.org, suzuki.poulose@arm.com, pawel.moll@arm.com,
mathieu.poirier@linaro.org, mingo@redhat.com,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 09/10] drivers/perf: Add support for ARMv8.2 Statistical Profiling Extension
Date: Wed, 4 Jan 2017 11:37:13 +0100 [thread overview]
Message-ID: <20170104103713.GH25813@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <1483467027-14547-10-git-send-email-will.deacon@arm.com>
On Tue, Jan 03, 2017 at 06:10:26PM +0000, Will Deacon wrote:
> The ARMv8.2 architecture introduces the Statistical Profiling Extension
> (SPE). SPE provides a way to configure and collect profiling samples
> from the CPU in the form of a trace buffer, which can be mapped directly
> into userspace using the perf AUX buffer infrastructure.
>
> This patch adds support for SPE in the form of a new perf driver.
>
Can you give a little high level overview of what exactly SPE is?
next prev parent reply other threads:[~2017-01-04 10:37 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-03 18:10 [RFC PATCH 00/10] Add support for the ARMv8.2 Statistical Profiling Extension Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-03 18:10 ` [RFC PATCH 01/10] arm64: cpufeature: allow for version discrepancy in PMU implementations Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-04 10:23 ` Mark Rutland
2017-01-04 10:23 ` Mark Rutland
2017-01-03 18:10 ` [RFC PATCH 02/10] arm64: cpufeature: Don't enforce system-wide SPE capability Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-04 10:53 ` Mark Rutland
2017-01-04 10:53 ` Mark Rutland
2017-01-03 18:10 ` [RFC PATCH 03/10] arm64: KVM: Save/restore the host SPE state when entering/leaving a VM Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-03 18:10 ` [RFC PATCH 04/10] arm64: head.S: Enable EL1 (host) access to SPE when entered at EL2 Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-03 18:10 ` [RFC PATCH 05/10] genirq: export irq_get_percpu_devid_partition to modules Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-03 18:10 ` [RFC PATCH 06/10] perf/core: Export AUX buffer helpers " Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-04 10:15 ` Peter Zijlstra
2017-01-04 10:15 ` Peter Zijlstra
2017-01-03 18:10 ` [RFC PATCH 07/10] perf: Directly pass PERF_AUX_* flags to perf_aux_output_end Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-03 18:10 ` [RFC PATCH 08/10] perf/core: Add PERF_AUX_FLAG_COLLISION to report colliding samples Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-03 18:10 ` [RFC PATCH 09/10] drivers/perf: Add support for ARMv8.2 Statistical Profiling Extension Will Deacon
2017-01-03 18:10 ` Will Deacon
2017-01-04 10:37 ` Peter Zijlstra [this message]
2017-01-04 10:37 ` Peter Zijlstra
2017-01-04 19:14 ` Will Deacon
2017-01-04 19:14 ` Will Deacon
2017-01-05 11:31 ` Peter Zijlstra
2017-01-05 11:31 ` Peter Zijlstra
2017-01-10 22:04 ` Kim Phillips
2017-01-10 22:04 ` Kim Phillips
2017-01-11 12:37 ` Will Deacon
2017-01-11 12:37 ` Will Deacon
2017-01-11 21:02 ` Kim Phillips
2017-01-11 21:02 ` Kim Phillips
2017-01-13 13:33 ` Will Deacon
2017-01-13 13:33 ` Will Deacon
2017-01-12 11:31 ` Marc Zyngier
2017-01-12 11:31 ` Marc Zyngier
2017-01-03 18:10 ` [RFC PATCH 10/10] dt-bindings: Document devicetree binding for ARM SPE Will Deacon
2017-01-03 18:10 ` Will Deacon
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