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Message-Id: <20211206091749.87585-2-kjain@linux.ibm.com>
Date: Mon, 6 Dec 2021 14:47:46 +0530
From: Kajol Jain <kjain@...ux.ibm.com>
To: mpe@...erman.id.au, linuxppc-dev@...ts.ozlabs.org,
linux-kernel@...r.kernel.org, peterz@...radead.org,
mingo@...hat.com, acme@...nel.org, jolsa@...nel.org,
namhyung@...nel.org, ak@...ux.intel.com
Cc: linux-perf-users@...r.kernel.org, maddy@...ux.ibm.com,
atrajeev@...ux.vnet.ibm.com, rnsastry@...ux.ibm.com,
yao.jin@...ux.intel.com, ast@...nel.org, daniel@...earbox.net,
songliubraving@...com, kan.liang@...ux.intel.com,
mark.rutland@....com, alexander.shishkin@...ux.intel.com,
paulus@...ba.org, kjain@...ux.ibm.com
Subject: [PATCH 1/4] perf: Add new macros for mem_hops field
Add new macros for mem_hops field which can be used to
represent remote-node, socket and board level details.
Currently the code had macro for HOPS_0, which corresponds
to data coming from another core but same node.
Add new macros for HOPS_1 to HOPS_3 to represent
remote-node, socket and board level data.
For ex: Encodings for mem_hops fields with L2 cache:
L2 - local L2
L2 | REMOTE | HOPS_0 - remote core, same node L2
L2 | REMOTE | HOPS_1 - remote node, same socket L2
L2 | REMOTE | HOPS_2 - remote socket, same board L2
L2 | REMOTE | HOPS_3 - remote board L2
Signed-off-by: Kajol Jain <kjain@...ux.ibm.com>
---
include/uapi/linux/perf_event.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index bd8860eeb291..1b65042ab1db 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -1332,7 +1332,10 @@ union perf_mem_data_src {
/* hop level */
#define PERF_MEM_HOPS_0 0x01 /* remote core, same node */
-/* 2-7 available */
+#define PERF_MEM_HOPS_1 0x02 /* remote node, same socket */
+#define PERF_MEM_HOPS_2 0x03 /* remote socket, same board */
+#define PERF_MEM_HOPS_3 0x04 /* remote board */
+/* 5-7 available */
#define PERF_MEM_HOPS_SHIFT 43
#define PERF_MEM_S(a, s) \
--
2.27.0
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