From: Kan Liang kan.liang@linux.intel.com
mainline inclusion from mainline-v5.2-rc1 commit bf6d18cffa5f26bd5dc71485c2a2ad0c42a0ce60 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4MKP4 CVE: NA
--------------------------------
Perf cannot parse UPI (Intel's "Ultra Path Interconnect" [1]) events.
# perf stat -e UPI_DATA_BANDWIDTH_TX event syntax error: 'UPI_DATA_BANDWIDTH_TX' ___ parser error Run 'perf list' for a list of valid events
The JSON lists call the box UPI LL, while perf calls it upi. Add conversion support to JSON to convert the unit properly.
Committer notes:
[1] https://en.wikipedia.org/wiki/Intel_Ultra_Path_Interconnect
"The Intel Ultra Path Interconnect (UPI) is a point-to-point processor interconnect developed by Intel which replaced the Intel QuickPath Interconnect (QPI) in Xeon Skylake-SP platforms starting in 2017.
UPI is a low-latency coherent interconnect for scalable multiprocessor systems with a shared address space. It uses a directory-based home snoop coherency protocol with a transfer speed of up to 10.4 GT/s. Supporting processors typically have two or three UPI links."
Signed-off-by: Kan Liang kan.liang@linux.intel.com Cc: Andi Kleen ak@linux.intel.com Cc: Jiri Olsa jolsa@kernel.org Link: http://lkml.kernel.org/r/1557234991-130456-1-git-send-email-kan.liang@linux.... Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Jackie Liu liuyun01@kylinos.cn #openEuler_contributor Signed-off-by: Laibin Qiu qiulaibin@huawei.com --- tools/perf/pmu-events/jevents.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c index 6631970f9683..581a31412f00 100644 --- a/tools/perf/pmu-events/jevents.c +++ b/tools/perf/pmu-events/jevents.c @@ -235,6 +235,7 @@ static struct map { { "iMPH-U", "uncore_arb" }, { "CPU-M-CF", "cpum_cf" }, { "CPU-M-SF", "cpum_sf" }, + { "UPI LL", "uncore_upi" }, {} };