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Message-ID: <20200117033934.GA23536@hao-dev>
Date: Fri, 17 Jan 2020 11:39:34 +0800
From: Wu Hao <hao.wu@...el.com>
To: will@...nel.org
Cc: mdf@...nel.org, mark.rutland@....com, linux-fpga@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
atull@...nel.org, gregkh@...uxfoundation.org
Subject: Re: [RESEND Patch v6 0/2] add performance reporting support to FPGA
DFL drivers
Hi Will
I resend this patch per suggestion from Greg.
Actually this is one important feature for users, but was blocked by
code review for quite a long time (no comments since last November).
We really need your help on code review from perf, please help us..
Many Thanks!
Hao
On Fri, Jan 17, 2020 at 11:10:26AM +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 latest fpga/for-next branch.
>
> 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
>
> Documentation/fpga/dfl.rst | 83 ++++
> drivers/fpga/Makefile | 1 +
> drivers/fpga/dfl-fme-main.c | 4 +
> drivers/fpga/dfl-fme-perf.c | 943 ++++++++++++++++++++++++++++++++++++++++++++
> drivers/fpga/dfl-fme.h | 2 +
> drivers/fpga/dfl.h | 2 +
> 6 files changed, 1035 insertions(+)
> create mode 100644 drivers/fpga/dfl-fme-perf.c
>
> --
> 1.8.3.1
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