Re: [PATCH v4 3/3] docs: perf: Add new description for HiSilicon UC PMU

Mark Rutland
2023-06-09T09:01:03Z

On Fri, Jun 09, 2023 at 03:56:08PM +0800, Junhao He wrote:
> A new function is added on HiSilicon uncore UC PMU.
>
> The UC PMU support to filter statistical information based on
> the specified tx request uring channel. Make user configuration
> through "uring_channel" parameter.
> Document them to provide guidance on how to use them.
>
> Signed-off-by: Junhao He <hejunhao3@huawei.com>
> Reviewed-by: Jonathan Cameron <Jonthan.Cameron@huawei.com>
> Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>

Acked-by: Mark Rutland <mark.rutland@arm.com>

Mark.

> ---
> Documentation/admin-guide/perf/hisi-pmu.rst | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/Documentation/admin-guide/perf/hisi-pmu.rst b/Documentation/admin-guide/perf/hisi-pmu.rst
> index 546979360513..939a524fa1d6 100644
> --- a/Documentation/admin-guide/perf/hisi-pmu.rst
> +++ b/Documentation/admin-guide/perf/hisi-pmu.rst
> @@ -98,6 +98,14 @@ CCL/ICL-ID. For I/O die, the ICL-ID is followed by:
> 5'b00011: HAC_ICL;
> 5'b10000: PCIe_ICL;
>
> +(e) uring_channel: UC PMU events 0x47~0x59 supports filtering by tx request
> +uring channel. It is 2 bits. Some important codes are as follows:
> +2'b11: count the events which sent to the uring_ext (MATA) channel;
> +2'b01: is the same as 2'b11;
> +2'b10: count the events which sent to the uring (non-MATA) channel;
> +2'b00: default value, count the events which sent to the both uring and
> + uring_ext channel;
> +
> Users could configure IDs to count data come from specific CCL/ICL, by setting
> srcid_cmd & srcid_msk, and data desitined for specific CCL/ICL by setting
> tgtid_cmd & tgtid_msk. A set bit in srcid_msk/tgtid_msk means the PMU will not
> --
> 2.33.0
>