Re: [PATCH v4 3/3] docs: perf: Add new description for HiSilicon UC PMU
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From: Mark Rutland <mark.rutland@arm.com>
Date: 2023-06-09 09:01:03
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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 <redacted> Reviewed-by: Jonathan Cameron <redacted> Reviewed-by: Yicong Yang <redacted>
Acked-by: Mark Rutland <mark.rutland@arm.com> Mark.
quoted hunk ↗ jump to hunk
--- 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
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