linux-kernel - Re: [PATCH v8 0/2] add performance reporting support to FPGA DFL drivers

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Date:   Mon, 9 Mar 2020 15:47:58 +0800
From:   Wu Hao <hao.wu@...el.com>
To:     mdf@...nel.org, will@...nel.org, mark.rutland@....com,
        gregkh@...uxfoundation.org, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     linux-api@...r.kernel.org, atull@...nel.org, yilun.xu@...el.com
Subject: Re: [PATCH v8 0/2] add performance reporting support to FPGA DFL
 drivers

Hi Will,

Just a gentle ping. Do you have Any comments to this new version?

Hao

On Mon, Feb 24, 2020 at 08:21:45AM +0800, Wu Hao wrote:
> Hi all,
> 
> This patchset adds performance reporting support for FPGA DFL drivers. It
> introduces one pmu to expose userspace interfaces via standard perf API.
> User could use standard perf tool to access perf events exposed via pmu.
> 
> This patchset is generated based on 5.6-rc2.
> 
> Main changes from v7:
>  - rename pmu name from "fme%d" to "dfl_fme%d".
>  - monitor cpu hotplug for cpumask sysfs and update cpumask sysfs doc.
>  - add extra read for 64bit counter registers to avoid 2-32bit readl issue.
> 
> Main changes from v6:
>  - add a new ABI/testing/ sysfs documentation in patch #2.
>  - fix a warning reported by kbuild in patch #2.
> 
> Main changes from v5:
>  - use dev_ext_attribute instead of fme_perf_event_attr.
>  - use is_visible function to decide which events to expose per
>    hardware capability, and add event_init checking for all events.
> 
> Main changes from v4:
>  - rebase and clean up.
>  - update Kconfig for PERF_EVENTS dependency.
> 
> Main changes from v3:
>  - add more descriptions in doc, including how to use perf tool for these
>    hardware counters. (patch #1)
>  - use standard perf API instead of sysfs entries. (patch #2)
> 
> Wu Hao (1):
>   fpga: dfl: fme: add performance reporting support
> 
> Xu Yilun (1):
>   Documentation: fpga: dfl: add description for performance reporting
>     support
> 
>  .../testing/sysfs-bus-event_source-devices-dfl_fme |  104 ++
>  Documentation/fpga/dfl.rst                         |   84 ++
>  drivers/fpga/Kconfig                               |    2 +-
>  drivers/fpga/Makefile                              |    1 +
>  drivers/fpga/dfl-fme-main.c                        |    4 +
>  drivers/fpga/dfl-fme-perf.c                        | 1021 ++++++++++++++++++++
>  drivers/fpga/dfl-fme.h                             |    2 +
>  drivers/fpga/dfl.h                                 |    2 +
>  8 files changed, 1219 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/ABI/testing/sysfs-bus-event_source-devices-dfl_fme
>  create mode 100644 drivers/fpga/dfl-fme-perf.c
> 
> -- 
> 1.8.3.1