linux-kernel - [PATCH 19/73] perf vendor events intel: Add uncore

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Message-Id: <20190517193611.4974-20-acme@kernel.org>
Date:   Fri, 17 May 2019 16:35:17 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
        Clark Williams <williams@...hat.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Kan Liang <kan.liang@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [PATCH 19/73] perf vendor events intel: Add uncore_upi JSON support

From: Kan Liang <kan.liang@...ux.intel.com>

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@...ux.intel.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Link: http://lkml.kernel.org/r/1557234991-130456-1-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.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 68c92bb599ee..daaea5003d4a 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" },
 	{}
 };
 
-- 
2.20.1