From: Junhao He Date: Thu, 15 Jun 2023 12:59:26 +0000 (+0800) Subject: docs: perf: Add new description for HiSilicon UC PMU X-Git-Tag: v6.6.7~2467^2~4 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ea8d1c062a0e876e999e4f347daeb598d5e677ab;p=platform%2Fkernel%2Flinux-starfive.git docs: perf: Add new description for HiSilicon UC PMU 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 Reviewed-by: Jonathan Cameron Reviewed-by: Yicong Yang Acked-by: Mark Rutland Link: https://lore.kernel.org/r/20230615125926.29832-4-hejunhao3@huawei.com Signed-off-by: Will Deacon --- diff --git a/Documentation/admin-guide/perf/hisi-pmu.rst b/Documentation/admin-guide/perf/hisi-pmu.rst index 5469793..939a524 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