From: sboyd@codeaurora.org (Stephen Boyd)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/8] arm: perf: fold percpu_pmu into pmu_hw_events
Date: Tue, 21 Oct 2014 15:05:07 -0700 [thread overview]
Message-ID: <5446D893.6020708@codeaurora.org> (raw)
In-Reply-To: <1413897084-19715-7-git-send-email-mark.rutland@arm.com>
On 10/21/2014 06:11 AM, Mark Rutland wrote:
> Currently the percpu_pmu pointers used as percpu_irq dev_id values are
> defined separately from the other per-cpu accounting data, which make
> dynamically allocating the data (as will be required for systems with
> heterogeneous CPUs) difficult.
>
> This patch moves the percpu_pmu pointers into pmu_hw_events (which is
> itself allocated per cpu), which will allow for easier dynamic
> allocation. Both percpu and regular irqs are requested using percpu_pmu
> pointers as tokens, freeing us from having to know whether an irq is
> percpu within the handler, and thus avoiding a radix tree lookup on the
> handler path.
>
> Signed-off-by: Mark Rutland <mark.rutland@arm.com>
> Reviewed-by: Will Deacon <will.deacon@arm.com>
> Cc: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Stephen Boyd <sboyd@codeaurora.org>
Works on Krait with percpu interrupts.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2014-10-21 22:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-21 13:11 [PATCH 0/8] Prepatory rework for multi-PMU support Mark Rutland
2014-10-21 13:11 ` [PATCH 1/8] arm: perf: factor out callchain code Mark Rutland
2014-10-21 13:11 ` [PATCH 2/8] arm: perf: make PMU probing data-driven Mark Rutland
2014-10-21 21:25 ` Stephen Boyd
2014-10-22 9:50 ` Mark Rutland
2014-10-21 13:11 ` [PATCH 3/8] arm: perf: use IDR types for CPU PMUs Mark Rutland
2014-10-21 21:25 ` Stephen Boyd
2014-10-22 10:06 ` Mark Rutland
2014-10-27 20:29 ` Stephen Boyd
2014-10-21 13:11 ` [PATCH 4/8] arm: perf: limit size of accounting data Mark Rutland
2014-10-21 13:11 ` [PATCH 5/8] arm: perf: kill get_hw_events() Mark Rutland
2014-10-21 13:11 ` [PATCH 6/8] arm: perf: fold percpu_pmu into pmu_hw_events Mark Rutland
2014-10-21 22:05 ` Stephen Boyd [this message]
2014-10-22 10:10 ` Mark Rutland
2014-10-21 13:11 ` [PATCH 7/8] arm: perf: dynamically allocate cpu hardware data Mark Rutland
2014-10-21 21:24 ` Stephen Boyd
2014-10-22 11:06 ` Mark Rutland
2014-10-21 13:11 ` [PATCH 8/8] arm: perf: fold hotplug notifier into arm_pmu Mark Rutland
2014-10-21 22:18 ` Stephen Boyd
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