From: Qizhi Zhang <zhangqizhi3@h-partners.com> driver inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/ICZCFN ---------------------------------------------------------------------- This reverts commit 95b929f3c450dd9a5e6ea9a6c02cc35de82784c6. Signed-off-by: Qizhi Zhang <zhangqizhi3@h-partners.com> --- Documentation/admin-guide/perf/hisi-pmu.rst | 33 --------------------- 1 file changed, 33 deletions(-) diff --git a/Documentation/admin-guide/perf/hisi-pmu.rst b/Documentation/admin-guide/perf/hisi-pmu.rst index 2a38da0094d2..1319cd08a083 100644 --- a/Documentation/admin-guide/perf/hisi-pmu.rst +++ b/Documentation/admin-guide/perf/hisi-pmu.rst @@ -127,39 +127,6 @@ channel with this option. The current supported channels are as follows: 7. tt_en: NoC PMU supports counting only transactions that have tracetag set if this option is set. See the 2nd list for more information about tracetag. -For HiSilicon uncore PMU v3 whose identifier is 0x40, some uncore PMUs are -further divided into parts for finer granularity of tracing, each part has its -own dedicated PMU, and all such PMUs together cover the monitoring job of events -on particular uncore device. Such PMUs are described in sysfs with name format -slightly changed:: - -/sys/bus/event_source/devices/hisi_sccl{X}_<l3c{Y}_{Z}/ddrc{Y}_{Z}/noc{Y}_{Z}> - -Z is the sub-id, indicating different PMUs for part of hardware device. - -Usage of most PMUs with different sub-ids are identical. Specially, L3C PMU -provides ``ext`` operand to allow exploration of even finer granual statistics -of L3C PMU. L3C PMU driver uses that as hint of termination when delivering -perf command to hardware: - -- ext=0: Default, could be used with event names. -- ext=1 and ext=2: Must be used with event codes, event names are not supported. - -An example of perf command could be:: - - $# perf stat -a -e hisi_sccl0_l3c1_0/rd_spipe/ sleep 5 - -or:: - - $# perf stat -a -e hisi_sccl0_l3c1_0/event=0x1,ext=1/ sleep 5 - -As above, ``hisi_sccl0_l3c1_0`` locates PMU of Super CPU CLuster 0, L3 cache 1 -pipe0. - -First command locates the first part of L3C since ``ext=0`` is implied by -default. Second command issues the counting on another part of L3C with the -event ``0x1``. - 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