From: Kajol Jain <kjain@linux.ibm.com>
Date: Mon, 6 Dec 2021 14:47:46 +0530
Subject: perf: Add new macros for mem_hops field
Git-commit: cb1c4aba055f928ffae0c868e8dfe08eeab302e7
Patch-mainline: v5.17-rc1
References: jsc#PED-557

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@linux.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211206091749.87585-2-kjain@linux.ibm.com

Signed-off-by: Tony Jones <tonyj@suse.de>
---
 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) \